All ZTools

ZTools is a free, browser-only collection of 520+ developer & creator tools. Every tool listed here is documented with use cases, examples, and FAQs.

This index is the first wave — top 20 highest-demand tools. The rest land in subsequent batches; track progress on the GitHub repo.

Conversion

• base64 — Encode or decode data in Base64 format instantly.
• url-encoder — Encode and decode URLs and query parameters.
• markdown-html — Convert Markdown to HTML and vice versa.
• ascii-art-to-image — Render ASCII art as downloadable image
• ascii-to-decimal — Convert ASCII characters to decimal codes
• binary-to-negabinary — Convert binary to base -2 (negabinary)
• bytes-to-ascii — Convert byte arrays to ASCII text
• color-converter-advanced — Convert colors between HEX, RGB, HSL, HSV, and CMYK.
• csv-json — Convert CSV data to JSON format.
• csv-to-xlsx — Convert CSV files to Excel format
• currency-converter — Convert between world currencies with live rates.
• data-storage-converter — Convert between data storage units (bytes, KB, MB, GB, TB).
• decimal-to-ascii — Convert decimal codes to ASCII characters
• docx-to-pdf — Convert Microsoft Word documents to PDF format
• dog-age-converter — Convert dog years to human years
• heic-to-jpg — Convert HEIC iPhone images to standard JPG format
• hex-to-text-converter — Convert hexadecimal strings to UTF-8 text
• html-entities — Convert special characters to HTML entities.
• ip-address-converter — Convert IP addresses between formats (IPv4, decimal, hex).
• ip-to-hex — Convert IP addresses to hexadecimal format
• js-to-json — Convert JavaScript objects and arrays to valid JSON format.
• js-to-typescript — Convert JavaScript code to TypeScript with automatic type inference.
• json-to-csv — Convert JSON arrays to CSV format for spreadsheets
• json-to-js — Convert JSON to JavaScript object/array literal with export options.
• json-yaml — Convert between JSON and YAML formats.
• length — Convert between meters, feet, inches, and more.
• length-converter — Convert between length and distance units.
• markdown-to-pdf — Convert Markdown documents to PDF files
• number-base — Convert between binary, decimal, hex, and octal.
• octal-converter — Convert between decimal, octal, and other number bases.
• percentage-calculator — Calculate percentages, increase, decrease, and more with ease.
• rgb-hex — Convert colors between RGB, Hex, and HSL formats.
• roman-numerals — Convert between Roman numerals and decimal numbers.
• speed-converter — Convert between speed units (mph, km/h, m/s, knots).
• temperature — Convert between Celsius, Fahrenheit, and Kelvin.
• temperature-converter — Convert between Celsius, Fahrenheit, and Kelvin.
• time-unit — Convert between seconds, minutes, hours, days.
• typescript-to-js — Remove type annotations and convert TypeScript to plain JavaScript.
• unit-converter — Convert between different units of measurement.
• unix-timestamp — Convert Unix timestamps to dates and vice versa.
• weight — Convert between kg, pounds, ounces, and more.
• weight-converter — Convert between weight and mass units.
• xlsx-to-csv — Convert Excel spreadsheets to CSV format

Data

• json-formatter — Format and beautify JSON data.
• json-minifier — Minify JSON by removing whitespace.
• analyze-json — Analyze JSON structure and statistics
• array-operations — Perform operations on arrays: union, intersection, difference.
• change-csv-delimiter — Convert comma to tab or custom delimiter
• column-extractor — Extract specific columns from CSV/table data.
• count-binary-ones — Count number of 1s in binary string
• count-binary-zeros — Count number of 0s in binary string
• css-specificity — Calculate CSS selector specificity and understand rule precedence.
• csv-column-mapper — Remap and rearrange CSV columns
• csv-parser — Parse and analyze CSV data.
• csv-to-text-columns — Convert CSV to fixed-width text columns
• csv-viewer — View CSV data in table format.
• data-cleaner — Clean and normalize data with multiple options
• diff-merger — Merge text differences and resolve conflicts.
• find-duplicate-items — Identify duplicate entries in list
• find-list-length — Count total items in a list
• find-unique-items — Extract unique values from list
• grep-tool — Search text using regular expressions.
• hex-to-image — Visualize hex data as image using canvas
• html-entity-counter — Count and analyze HTML entities in your code.
• invert-binary-bits — Flip all bits in binary string (0↔1)
• js-object-to-json — Convert JavaScript objects to valid JSON.
• json-path-finder — Find and extract data using JSONPath queries.
• json-schema-generator — Generate JSON Schema from sample JSON data
• json-to-single-line-string — Convert valid JSON into an escaped one-line string literal.
• json-tree-viewer — View JSON data in interactive tree structure.
• json-viewer — View and explore JSON data structure.
• list-dedup — Remove duplicate items from lists.
• list-randomizer — Randomly shuffle and reorder list items.
• list-shuffler — Randomly shuffle list items.
• list-sorter — Sort lists alphabetically or numerically.
• obfuscate-json — Minify and compress JSON data
• reverse-hex — Reverse hexadecimal string characters
• shuffle-binary-bits — Randomly shuffle bits in binary string
• sort-csv-data — Sort CSV by column ascending or descending
• sql-formatter — Format and beautify SQL queries.
• sql-to-json — Convert SQL query results to JSON format.
• xml-formatter — Format and beautify XML data.
• xml-minifier — Minify XML by removing whitespace and comments.
• xml-validator — Validate XML syntax and structure.
• yaml-to-json — Convert YAML configuration files to JSON format
• yaml-validator — Validate YAML syntax and structure.

Design

• app-icon-generator — Generate app icons in all required sizes for iOS, Android, and web applications.
• business-card-designer — Design professional business cards with templates. Export print-ready PDF or images.
• collage-maker — Create photo collages with multiple layout templates, custom gaps, and border options.
• color-blindness-simulator — Simulate how images appear with different types of color blindness
• email-signature-generator — Create professional email signatures with multiple templates, social links, and HTML export.
• icon-generator-svg — Create custom SVG icons with templates and customization
• logo-maker — Create simple logos with text, shapes, and icons. Export as PNG or SVG.
• meme-generator — Create memes with custom text, fonts, and positioning on uploaded images or templates.
• pattern-generator-advanced — Create seamless patterns with geometric shapes, colors, and customizable designs.
• photo-editor — Edit photos with filters, crop, rotate, resize, and adjustments directly in your browser.
• poster-maker — Design posters and flyers with text, images, and shapes. Multiple size templates.
• social-media-banner-maker — Create banners for Twitter, YouTube, LinkedIn, and Facebook with preset dimensions.
• whiteboard — Draw, sketch, and brainstorm with freehand drawing, shapes, text, and color tools.
• youtube-thumbnail-maker — Design eye-catching YouTube thumbnails at 1280x720 with text overlays and templates.

Developer

• api-response-mocker — Generate mock API responses with realistic fake data. Support for JSON, arrays, and nested objects.
• cron-job-generator — Build cron expressions visually with human-readable descriptions and next run times.
• css-flexbox-generator — Visual CSS Flexbox builder with live preview. Set direction, alignment, gap, and child properties.
• css-grid-generator — Visual CSS Grid layout builder with rows, columns, gaps, and area placement.
• git-command-generator — Generate Git commands for common workflows. Interactive guide for beginners and pros.
• html-to-markdown-converter — Convert HTML to clean Markdown with support for tables, lists, links, and code blocks.
• json-to-typescript — Convert JSON objects to TypeScript interfaces with nested type support and naming options.
• markdown-editor — Write Markdown with live preview, toolbar shortcuts, and export to HTML or .md files.
• pixel-to-rem-converter — Convert between PX, REM, EM, and VW units with configurable base font size and batch conversion.
• sql-formatter-pro — Format and beautify SQL queries with syntax highlighting and multiple SQL dialects.

Education

• bibliography-generator — Generate citations and bibliographies in multiple formats
• citation-generator — Generate citations in APA, MLA, Chicago, Harvard, and IEEE formats for any source type.
• essay-word-counter — Count words, characters, sentences, and paragraphs in essays. Check word limits easily.
• flashcard-maker — Create, study, and organize flashcard decks with shuffle and spaced repetition modes.
• gpa-calculator — Calculate your semester and cumulative GPA with support for multiple grading scales.
• grade-calculator — Calculate weighted grades, find what you need on finals, and track assignment scores.
• math-equation-solver — Solve algebraic equations, simplify expressions, and get step-by-step solutions.
• note-taking-app — Take rich-text notes with formatting, lists, and images. Auto-save and organize notes.
• periodic-table — Explore the periodic table with element details, properties, and electron configurations.
• plagiarism-detector-academic — Advanced plagiarism detection for academic writing
• pomodoro-study-timer — Boost productivity with the Pomodoro Technique. 25-minute focus sessions with breaks.
• quiz-maker — Create interactive quizzes with multiple choice, true/false, and open-ended questions.
• research-paper-outline-generator — Generate academic paper outlines in APA, MLA, Chicago formats
• study-planner — Organize your study schedule with a visual planner. Track subjects, goals, and progress.
• text-similarity-checker — Compare two texts and calculate similarity percentage. Detect plagiarism and duplicates.
• typing-speed-test — Test your typing speed and accuracy with real-time WPM tracking and detailed statistics.

Encoding

• qr-generator — Generate QR codes from text or URLs.
• hash-generator — Generate MD5, SHA-1, SHA-256 hashes.
• jwt-decoder — Decode and inspect JSON Web Tokens.
• ascii85-encoder-decoder — Encode and decode ASCII85 (Base85) format
• atbash-cipher — Encode and decode text using Atbash cipher (reverse alphabet).
• barcode-generator — Generate various barcode formats.
• base32-encoder — Encode and decode text using Base32 encoding.
• binary-text — Convert binary to text and vice versa.
• binary-to-utf8 — Convert binary string to UTF-8 text.
• caesar-cipher — Encode and decode Caesar cipher with custom shift.
• hex-to-utf8 — Convert hexadecimal bytes to UTF-8 text.
• html-encoder — Encode and decode HTML special characters.
• jwt-encoder-decoder — Encode, decode, and verify JSON Web Tokens.
• md5-hash-generator — Generate MD5 hash from text or files.
• morse-code — Convert text to Morse code and vice versa.
• punycode — Convert international domain names.
• quoted-printable-encoder — Encode and decode email quoted-printable format
• rot13 — Encode and decode ROT13 cipher text.
• sql-encoder — Escape SQL queries for safe execution.
• string-encoder — Encode strings in various formats (URL, HTML, Base64).
• string-escaper — Escape and unescape strings for JSON, JavaScript, and more.
• unicode-to-utf8 — Convert Unicode codepoints to UTF-8 byte sequences.
• utf8-to-binary — Convert UTF-8 text to binary string representation.
• utf8-to-hex — Convert UTF-8 encoded text to hexadecimal representation.
• utf8-validator — Check if text or bytes are valid UTF-8 encoding.
• vigenere-cipher — Encode and decode text using Vigenère cipher with keyword.
• xml-encoder — Encode and decode XML special characters.

Extractor

• date-time-extractor — Extract dates from text in ISO 8601, US/EU formats, Unix timestamps, and relative dates
• domain-extractor — Extract domain names from URLs, emails, and text with TLD filtering and subdomain analysis
• email-extractor — Extract email addresses from any text with domain filtering, disposable email detection, and role-based email exclusion
• hashtag-mention-extractor — Extract #hashtags and @mentions from social media posts, tweets, and any text
• ip-address-extractor — Extract IPv4 and IPv6 addresses from logs, configs, or text with public/private classification
• keyword-extractor — Extract keywords and key phrases from articles using TF scoring with n-gram support and custom stop words
• lead-extractor — Universal contact data extractor — extract emails, phones, URLs, domains, hashtags, and mentions all at once
• number-extractor — Extract integers, decimals, currencies, percentages, fractions, and scientific notation from text
• phone-number-extractor — Extract and validate international phone numbers from text with country detection and formatting
• url-extractor — Extract URLs and links from text, HTML, markdown with protocol filtering, domain analysis, and image URL exclusion

Finance

• commodity-price-calculator — Calculate prices for iron, steel, wood, cement, and other building materials.
• crypto-price-tracker — Track cryptocurrency prices and market data in real-time
• emi-calculator — Calculate Equated Monthly Installments for loans with detailed amortization schedule.
• gold-rate-calculator — Calculate gold prices in Tola, Masa, and Grams with live rates and purity options.
• income-tax-calculator — Estimate your income tax liability with bracket breakdowns for US, UK, India, Canada, and Australia.
• jewelry-metal-calculator — Universal calculator for any precious metal with custom rates and units.
• loan-calculator — Calculate monthly payments, total interest, and amortization for auto, personal, and student loans.
• palladium-rate-calculator — Calculate palladium prices for jewelry with customizable unit settings.
• paycheck-calculator — Calculate your net take-home pay after taxes, deductions, and withholdings.
• platinum-rate-calculator — Calculate platinum jewelry prices with purity and weight conversions.
• roi-calculator — Calculate Return on Investment percentage, annualized returns, and profit/loss analysis.
• savings-goal-calculator — Plan your savings with goal tracking, monthly contribution estimates, and growth timelines.
• silver-rate-calculator — Calculate silver prices with unit conversions between Tola, Masa, and Grams.
• sip-calculator — Calculate returns on Systematic Investment Plans with compound growth projections.
• stock-portfolio-tracker — Manage stock portfolio with gains and losses tracking

Generator

• password-generator — Generate strong, random passwords.
• uuid-generator — Generate unique identifiers (UUID/GUID).
• cron-expression — Build and validate cron expressions with visual builder and human-readable descriptions.
• api-documentation-generator — Generate formatted API documentation
• barcode-generator-advanced — Generate various barcode formats with customization.
• bio-generator — Generate social media bios and professional summaries.
• border-radius — Design CSS border radius with visual editor.
• box-shadow — Design CSS box shadows with visual editor.
• color-mixer — Mix two or more colors together to create new colors.
• color-palette — Generate beautiful color palettes.
• color-palette-generator-advanced — Generate harmonious color palettes from a base color.
• color-shades-generator — Generate lighter and darker shades of any color.
• credit-card-generator — Generate valid test credit card numbers for development.
• css-background-pattern-generator — Generate repeating CSS background patterns.
• css-border-radius-generator — Design custom border radius for all corners.
• css-box-shadow-generator — Design custom box shadows with multiple layers and live preview.
• css-checkbox-generator — Design custom styled checkboxes with CSS.
• css-clip-path-generator — Create custom shapes using CSS clip-path property.
• css-cubic-bezier-generator — Design custom easing curves for CSS animations.
• css-glassmorphism-generator — Create frosted glass effects with blur and transparency.
• css-gradient-generator — Create beautiful linear and radial CSS gradients with live preview.
• css-loader-generator — Create animated CSS loading spinners and progress indicators.
• css-switch-generator — Create toggle switches with pure CSS.
• css-text-glitch-generator — Add glitch effects to text using CSS animations.
• css-triangle-generator — Create CSS triangles and arrows for any direction.
• dendrite-fractal — Generate dendrite fractal patterns with Canvas.
• dummy-data — Generate realistic fake data for testing and development.
• email-template-generator — Create professional email templates
• fake-data — Generate fake names, addresses, emails, and more.
• fake-iban-generator — Generate valid fake IBAN numbers for testing purposes.
• fractal-tree — Create recursive fractal tree patterns with Canvas.
• gradient-generator — Create CSS gradients visually.
• hashtag-generator — Generate relevant hashtags for social media posts.
• hilbert-curve — Generate Hilbert space-filling curve patterns with Canvas.
• htaccess-generator — Generate Apache .htaccess files for redirects and rules.
• invoice-generator — Create professional invoices and export as PDF.
• mac-address-generator — Generate random MAC addresses with custom prefixes.
• meta-tag-generator — Generate HTML meta tags for SEO.
• mock-api — Generate mock API responses.
• number-sequence — Generate number sequences with steps.
• open-graph-meta-generator — Generate Open Graph meta tags for social media sharing.
• pythagoras-fractal — Create Pythagoras tree fractal patterns with Canvas.
• random-color-generator — Generate random colors in various formats.
• random-number — Generate random numbers in custom ranges.
• random-string — Generate random strings with custom characters.
• react-native-shadow-generator — Generate cross-platform shadow styles for React Native apps.
• regex-builder — Build and test regular expressions with visual builder, match highlighting, and replace mode.
• robots-txt-generator — Generate robots.txt files for search engine crawlers.
• safe-app-identifier-generator — Generate valid Android and iOS app package identifiers from app name and domain.
• safe-file-name-generator — Generate OS-safe file names with proper extensions for any operating system.
• safe-folder-name-generator — Generate OS-safe folder names that work on Windows, macOS, and Linux.
• schema-markup-generator — Generate structured data markup for rich snippets.
• sierpinski-triangle — Draw Sierpinski triangle fractal with Canvas.
• sitemap-generator — Generate XML sitemaps for websites.
• sql-query-generator — Build SQL queries with visual form interface
• string-generator — Generate strings with patterns.
• svg-blob-generator — Generate random organic blob shapes as SVG for backgrounds and designs.
• svg-pattern-generator — Create seamless SVG patterns for backgrounds and designs.
• table-generator — Generate HTML/Markdown tables from data.
• twitter-card-generator — Generate Twitter Card meta tags for link previews.
• url-slug-generator — Generate URL-friendly slugs from text.

Health

• blood-alcohol-calculator — Estimate blood alcohol content (BAC) based on drinks, weight, gender, and time.
• bmr-calculator — Calculate your Basal Metabolic Rate using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas.
• body-fat-calculator — Estimate your body fat percentage using the US Navy method and BMI-based calculations.
• calorie-calculator — Calculate your Total Daily Energy Expenditure and daily calorie needs for weight loss, maintenance, or gain.
• heart-rate-zone-calculator — Calculate heart rate zones for optimal training using Karvonen or percentage methods.
• ideal-weight-calculator — Find your ideal weight range using Devine, Robinson, Miller, and Hamwi formulas.
• intermittent-fasting-timer — Track fasting periods with timer and notifications
• macronutrient-calculator — Calculate your optimal protein, carbohydrate, and fat intake for your fitness goals.
• meal-planner — Plan weekly meals with customizable templates
• one-rep-max-calculator — Calculate your one-rep max (1RM) for any exercise using proven strength formulas.
• ovulation-calculator — Track ovulation dates and fertile window based on menstrual cycle for family planning.
• pregnancy-due-date-calculator — Calculate your estimated due date, current trimester, and pregnancy milestones.
• protein-intake-calculator — Calculate daily protein needs based on weight, activity level, and fitness goals.
• running-pace-calculator — Calculate running pace, finish time, or distance for races from 5K to marathon.
• sleep-calculator — Find the best times to sleep and wake up based on 90-minute sleep cycles for optimal rest.
• tdee-calculator-advanced — Calculate Total Daily Energy Expenditure with activity level, body composition, and goals.
• water-intake-calculator — Calculate your recommended daily water intake based on weight, activity level, and climate.
• workout-timer — Customizable interval timer for HIIT, Tabata, circuit training, and rest periods.

Image

• color-picker — Pick colors from images.
• image-compressor — Reduce image file size.
• image-resizer — Resize images to specific dimensions.
• favicon-generator — Generate all favicon sizes for web, iOS, and Android from a single image. Download as ZIP with HTML snippets and web manifest.
• add-border-jpg — Add colored borders to JPG images
• add-text-to-gif — Overlay text on GIF animations
• background-remover — Remove backgrounds from images using AI - 100% private, no uploads
• base64-image — Convert Base64 strings to images.
• blur-image — Apply Gaussian blur effect to images with adjustable intensity.
• cartoon-effect-generator — Apply cartoon effects to images using filters
• change-gif-speed — Adjust GIF animation frame delay
• change-jpg-quality — Adjust JPEG compression quality
• change-png-colors — Replace specific colors in PNG images
• convert-png-to-webp — Convert PNG images to WebP format
• convert-webp-to-png — Convert WebP images to PNG format
• crop-webp — Crop WebP images to custom dimensions
• duplicate-image-finder — Find duplicate images using perceptual hashing
• extract-gif-frames — Export individual frames from GIF animations
• grayscale-jpg — Convert JPG images to grayscale
• heic-converter — Convert iPhone HEIC photos to PNG, JPG, or WebP with smart compression. Batch processing supported.
• image-average-color-finder — Extract average and dominant colors from any image in HEX, RGB, HSL formats.
• image-base64 — Convert images to Base64 strings.
• image-border-tool — Add customizable borders to images.
• image-color-extractor — Extract color palette with dominant colors from any image.
• image-compress-tool — Compress images while maintaining quality.
• image-crop-tool — Crop images with preset aspect ratios.
• image-cropper — Crop images to custom dimensions.
• image-filters — Apply filters and effects to images.
• image-filters-effect — Apply artistic filters and effects to images.
• image-format-batch-converter — Convert multiple images to different formats at once
• image-rotate-flip — Rotate and flip images with live preview.
• image-upscaler — Upscale images with AI-powered enhancement
• image-watermark — Add text or image watermarks to images.
• instagram-filters-advanced — Apply popular Instagram-style filters to your photos.
• instagram-post-generator — Create Instagram-style post mockups.
• passport-photo-maker — Create passport-sized photos with standard dimensions
• photo-censor — Blur, pixelate, or black out sensitive areas in images.
• photo-collage-maker-advanced — Create beautiful photo collages with multiple layouts
• pixelate-image — Apply pixelation effect to images
• pixelate-jpg — Apply pixelation effect to JPG images
• pixelate-webp — Apply pixelation effect to WebP images
• remove-gif-background — Make GIF background transparent
• remove-webp-background — Remove background from WebP images
• replace-webp-colors — Replace colors in WebP images
• reverse-gif — Reverse GIF animation frame order
• reverse-image-search — Search images across Google, TinEye, and Bing
• rotate-png — Rotate PNG images by custom degrees
• sharpen-image — Apply sharpening filter to images using convolution
• smart-image-optimizer — Compress and convert images like TinyPNG. Supports HEIC, PNG, JPEG, WebP with intelligent optimization.
• social-media-image-resizer — Resize images for social media platforms.
• svg-optimizer — Optimize and minify SVG files.
• svg-png — Convert SVG to PNG images.
• transparent-jpg — Add alpha channel to JPG images
• transparent-png-maker — Make specific colors transparent in PNG images
• transparent-webp — Make specific colors transparent in WebP images
• tweet-generator — Create Twitter/X tweet mockups.
• tweet-to-image-converter — Convert tweets to shareable images.
• universal-image-converter — Convert any image format to any other format. Supports HEIC, PNG, JPG, WebP, AVIF, SVG, GIF, BMP, TIFF with built-in compression.
• vimeo-thumbnail-grabber — Download thumbnails from any Vimeo video in high quality.
• youtube-thumbnail-grabber — Download thumbnails from any YouTube video in multiple resolutions.

Legal

• contract-template-generator — Generate professional legal contract templates
• cookie-policy-generator — Generate cookie policy with analytics and advertising disclosures.
• disclaimer-generator — Generate legal disclaimers for websites and applications.
• eula-generator — Create End-User License Agreement for software products.
• privacy-policy-generator — Generate GDPR & CCPA compliant privacy policies with multi-step wizard.
• return-refund-policy-generator — Create return and refund policy for e-commerce businesses.
• terms-of-service-generator — Create comprehensive terms of service for your website or app.

Math

• add-commas — Format large numbers with comma separators
• bmi-calculator — Calculate Body Mass Index with health category analysis.
• calculator — Perform basic and advanced calculations.
• compound-interest-calculator — Calculate compound interest and investment growth.
• discount-calculator — Calculate discounts, sale prices, and savings.
• enumerate-integers — Generate a sequence of integers with custom start, end, and step
• equation-grapher — Graph mathematical equations and functions interactively
• expression-evaluator — Evaluate mathematical expressions safely.
• fibonacci — Generate Fibonacci sequences.
• fraction — Add, subtract, multiply, and divide fractions.
• gcd-lcm — Calculate Greatest Common Divisor and Least Common Multiple.
• increment-digits — Add 1 to each digit in a number
• integer-pairs — Create pairs of integers from two ranges
• l-system — Draw L-system fractals using turtle graphics
• look-and-say — Generate the Look-and-Say sequence (1, 11, 21, 1211...)
• matrix-calculator — Perform matrix operations (add, multiply, determinant, inverse)
• mortgage-calculator — Calculate monthly mortgage payments and amortization.
• number-formatter — Format numbers with commas, decimals, and more.
• number-sum — Calculate the sum of a list of numbers
• numbers-to-words — Convert digits to written words (e.g., 100 → "one hundred")
• pascal-triangle — Draw Pascal\
• percentage-calc — Calculate percentages and percentage changes.
• pi-digits — Calculate Pi to a specified number of decimal places
• prime-checker — Check if a number is prime.
• pythagorean — Calculate sides of right triangles.
• random-matrix — Create a matrix filled with random numbers
• reverse-digits — Reverse the digits of a number (e.g., 123 → 321)
• roman-numeral — Convert between Roman and Arabic numerals.
• salary-calculator — Convert between hourly, daily, weekly, monthly, and annual salary.
• sort-numbers — Sort numbers in ascending or descending order
• statistics — Calculate mean, median, mode, and standard deviation.
• statistics-calculator — Calculate mean, median, mode, variance, and standard deviation.
• tip-calculator — Calculate tips and split bills between multiple people.
• words-to-numbers — Convert written numbers to digits (e.g., "one hundred" → 100)

Media

• audio-cutter — Trim and cut audio files with waveform display and precise start/end selection.
• audio-format-converter — Convert audio files between MP3, WAV, OGG, FLAC, and AAC formats.
• audio-joiner — Merge multiple audio files into one. Supports crossfade and gap adjustments.
• audio-noise-reducer — Remove background noise from audio recordings
• gif-maker — Create animated GIFs from multiple images. Adjust speed, size, and loop settings.
• image-to-text-ocr — Extract text from images using optical character recognition. Supports 100+ languages.
• qr-code-scanner — Scan QR codes using your camera or by uploading an image. Instantly decode any QR code.
• screen-recorder — Record your screen, window, or browser tab with optional audio directly in your browser.
• speech-to-text — Convert spoken words to text in real-time using your microphone. Supports multiple languages.
• video-compressor — Compress video files to reduce size while maintaining quality. Multiple output options.
• video-subtitle-extractor — Extract subtitles from video files in SRT/VTT format
• video-thumbnail-generator — Generate custom thumbnails from video frames
• video-to-gif — Convert video files to animated GIFs with custom frame rate, dimensions, and quality.
• voice-recorder — Record audio from your microphone with waveform visualization and instant playback.

Pdf

• merge-pdf — Combine multiple PDF files into one document.
• compress-pdf-advanced — Reduce PDF file size with advanced compression options. Choose quality vs size balance.
• delete-pdf-pages — Remove specific pages from a PDF document.
• excel-to-pdf — Convert Excel spreadsheets to PDF documents with preserved formatting and page layout.
• extract-pdf-pages — Extract specific pages or page ranges from a PDF.
• flatten-pdf — Flatten form fields and annotations to make them non-editable.
• image-to-pdf — Convert multiple images to a single PDF file.
• organize-pdf — Reorder and rearrange PDF pages by dragging or using arrows.
• pdf-bookmark-manager — Add, edit, and manage PDF bookmarks
• pdf-form-filler — Fill out PDF forms digitally. Add text, checkmarks, and signatures to any PDF form.
• pdf-ocr-text-extraction — Extract text from scanned PDF documents with OCR
• pdf-page-reorder — Rearrange pages in your PDF by drag and drop. Delete, duplicate, or rotate pages.
• pdf-reader — View and navigate PDF documents directly in your browser.
• pdf-to-excel — Extract tables from PDF files and convert them to Excel spreadsheets (.xlsx) for easy editing.
• pdf-to-image — Convert PDF pages to high-quality images (PNG, JPEG, WebP).
• pdf-to-text-extractor — Extract all text content from PDF files. Perfect for copying text from scanned documents.
• pdf-to-word — Convert PDF documents to editable Word files (.docx) while preserving formatting and layout.
• protect-pdf — Add password protection and restrictions to PDF documents.
• rotate-pdf — Change the orientation of PDF pages (90°, 180°, 270°).
• sign-pdf — Add your signature to PDF documents (drawn or typed).
• split-pdf — Divide a PDF into multiple files by page ranges or intervals.
• unlock-pdf — Remove password protection and restrictions from PDFs.
• watermark-pdf — Add customizable text watermarks to PDF pages.
• word-to-pdf — Convert Word documents (.doc, .docx) to PDF format with perfect formatting preservation.

Productivity

• checklist-maker — Create checklists with categories, templates, and export to PDF or shareable links.
• cover-letter-generator — Create tailored cover letters with professional templates and paragraph suggestions.
• daily-planner-advanced — Plan your day with time blocks, priorities, and to-do lists. Drag and drop scheduling.
• decision-wheel-spinner — Spin the wheel to make random decisions. Add your own options and let fate decide.
• eisenhower-matrix-maker — Prioritize tasks using the Eisenhower Matrix framework
• flowchart-maker — Design flowcharts with shapes, connectors, and text. Export as PNG or SVG.
• goal-tracker — Track goals with milestones and progress visualization
• habit-tracker — Track daily habits with streaks, statistics, and visual progress charts.
• kanban-board — Organize tasks with customizable columns, drag-and-drop cards, and color labels.
• meeting-cost-calculator — Calculate the real cost of meetings based on attendees, salaries, and duration.
• meeting-notes-generator — Structure meeting notes with attendees, agenda, action items, and decisions.
• mind-map-maker — Create interactive mind maps with drag-and-drop nodes, colors, and export to PNG.
• project-timeline-maker — Create Gantt charts and project timelines. Visualize tasks, milestones, and deadlines.
• resume-builder — Build professional resumes with multiple templates, real-time preview, and PDF export.

Seo

• alt-text-generator — Generate descriptive, SEO-friendly alt text suggestions for images based on context and keywords.
• breadcrumb-schema-generator — Generate BreadcrumbList JSON-LD structured data for rich search results with breadcrumb navigation.
• canonical-url-checker — Validate canonical URL tags in HTML — detect missing, duplicate, or misconfigured canonical links.
• heading-structure-checker — Validate H1-H6 heading hierarchy in HTML — detect missing levels, duplicate H1s, and improper nesting.
• hreflang-tag-generator — Generate hreflang link tags for multilingual and multi-regional websites — supports all ISO language codes.
• internal-link-analyzer — Analyze internal link structure from HTML — find orphan pages, broken links, and anchor text distribution.
• keyword-density-analyzer — Calculate keyword frequency and density percentage in your content — find overused and underused keywords.
• meta-tags-analyzer — Parse and validate meta tags from HTML — check title, description, Open Graph, Twitter Card, and viewport tags.
• mobile-seo-checker — Check HTML for mobile-friendliness — validate viewport, touch targets, font sizes, and responsive design tags.
• open-graph-debugger — Debug and preview Open Graph meta tags — see how your page will look when shared on Facebook, LinkedIn, and more.
• page-speed-analyzer — Analyze HTML for page speed issues — detect render-blocking resources, large images, and unoptimized assets.
• redirect-chain-checker — Analyze redirect chains and meta refresh tags in HTML — detect redirect loops, unnecessary hops, and SEO issues.
• robots-txt-validator — Validate robots.txt syntax — check for errors, warnings, and test URL matching against your rules.
• seo-checker — Comprehensive SEO audit — analyze HTML for meta tags, headings, images, links, and get an overall SEO score with actionable recommendations.
• seo-content-analyzer — Analyze content readability, keyword usage, sentence structure, and SEO quality with an actionable score.
• seo-score-calculator — Calculate a weighted SEO score for your content — checks readability, keyword usage, structure, and optimization level.
• serp-preview — Preview how your page will appear in Google search results — optimize title, URL, and description for maximum CTR.
• sitemap-xml-generator — Generate valid XML sitemaps with URLs, last modified dates, change frequency, and priority settings.
• structured-data-validator — Validate JSON-LD structured data — check schema.org types, required properties, and syntax errors.
• twitter-card-validator — Validate Twitter Card meta tags and preview how your content will appear when shared on Twitter/X.

Text

• lorem-ipsum — Generate placeholder text for your designs and mockups quickly.
• word-counter — Count words, characters, sentences, and analyze your text instantly.
• add-prefix-to-lines — Add custom prefix to the beginning of each line.
• article-rewriter — Rewrite articles with advanced NLP algorithms
• ascii-art — Convert text to ASCII art with various fonts.
• bionic-reading-converter — Convert text to bionic reading format for faster reading.
• character-counter — Count characters with or without spaces in your text.
• duplicate-remover — Remove duplicate lines from your text.
• find-replace — Find and replace text with support for regex patterns.
• google-fonts-pair-finder — Find beautiful font pairings from Google Fonts for your designs.
• grammar-checker — Check grammar and spelling errors with intelligent suggestions
• join-strings — Join multiple strings with a custom delimiter.
• letter-frequency — Analyze character frequency in your text.
• line-counter — Count number of lines and empty lines in text.
• multiple-whitespace-remover — Remove extra spaces and normalize whitespace in text.
• palindrome-checker — Check if text is a palindrome (reads same forward and backward).
• paraphrasing-tool — Rewrite text with synonyms while preserving meaning
• pick-random-item — Randomly select one or more items from a list.
• plagiarism-checker — Compare texts and detect similarities
• random-text — Generate random text and sentences.
• reading-time-estimator — Estimate reading and speaking time for your text.
• remove-unicode-font — Strip Unicode font formatting and return plain text.
• repeat-string — Repeat text or pattern multiple times.
• sentence-counter — Count sentences, paragraphs, and text statistics.
• shuffle-letters — Randomly shuffle all letters in text.
• shuffle-lines — Randomly shuffle line order in your text.
• shuffle-words — Randomly shuffle word order while keeping letters intact.
• split-string — Split text by delimiter or regular expression pattern.
• spoof-unicode-text — Replace text with lookalike Unicode characters for visual effects.
• text-case-converter — Convert text between uppercase, lowercase, title case, and more.
• text-reverser — Reverse your text, words, or letters instantly.
• text-sorter — Sort lines alphabetically, numerically, or by length.
• text-summarizer — Extract key sentences and create concise summaries
• text-to-handwriting-converter — Convert typed text to handwritten style image.
• text-to-image — Convert text to PNG or JPG image using HTML5 Canvas.
• text-to-speech — Convert text to spoken audio using browser speech synthesis.
• text-to-unicode-font — Apply Unicode font styles (bold, italic, monospace, etc.).
• text-trimmer — Remove extra spaces, newlines, and whitespace.
• text-truncator — Truncate text to specified length with custom ellipsis.
• word-frequency — Find most common words in your text.
• zalgo-text-generator — Add diacritical marks to create creepy zalgo text effect.

Utility

• regex-tester — Test and debug regular expressions with live matching.
• diff-checker — Compare text and code differences.
• age-calculator — Calculate age from birthdate.
• alarm-clock — Set alarms with custom sounds, snooze, and a large digital clock display.
• aspect-ratio-calculator — Calculate aspect ratios and resize dimensions proportionally for video, images, and displays.
• barcode-scanner-advanced — Scan barcodes using your camera. Supports all major barcode formats and QR codes.
• billable-hours — Calculate billable hours and earnings with flexible time input and per-task rates.
• bulk-url-checker — Check HTTP status codes for multiple URLs
• code-beautifier — Format and beautify code (JS, CSS, HTML, JSON).
• code-minifier — Minify code to reduce file size.
• code-to-image-converter — Convert code snippets to beautiful images for sharing.
• coin-flipper — Flip a virtual coin for heads or tails.
• color-contrast-checker — Check WCAG color contrast ratios for accessibility.
• countdown-timer — Count down to a specific date and time.
• credit-card-validator — Validate credit card numbers using Luhn algorithm.
• date-calculator — Calculate date differences and add/subtract days.
• date-difference-calculator — Calculate the difference between two dates.
• device-info — View comprehensive browser, device, screen, and hardware information.
• dice-roller — Roll virtual dice with customizable sides and quantity.
• digital-clock — Real-time digital clock display with canvas
• dns-lookup-tool — Lookup DNS records (A, AAAA, MX, TXT, CNAME)
• email-validator — Validate email address format and syntax.
• emoji-picker — Search and copy emojis with categories and search.
• file-hash-calculator — Calculate file checksums (MD5, SHA-256, SHA-512)
• iban-validator — Validate International Bank Account Numbers (IBAN) with country and bank details.
• invoice-generator-pro — Create professional invoices with line items, taxes, and discounts. Export as PDF.
• ip-lookup — Get information about IP addresses.
• memento-mori-calendar — Life calendar visualization showing weeks lived
• notepad-online — Simple online text editor with auto-save, word count, multiple tabs, and export options.
• password-strength-checker — Check password strength and get improvement suggestions.
• phone-number-validator — Validate and format phone numbers.
• pomodoro — Productivity timer using Pomodoro technique.
• random-name-generator — Generate random names for babies, businesses, usernames, fantasy characters, and pets.
• receipt-generator — Generate receipts for purchases and payments. Customizable templates and PDF export.
• scientific-calculator — Advanced calculator with trigonometry, logarithms, factorials, and expression history.
• stopwatch-timer — Precision stopwatch with lap times and history.
• subnet-calculator — Calculate IP subnets, ranges, and CIDR notation.
• timer — Set timers and track time.
• timezone — Convert times between timezones.
• twitter-ad-revenue-generator — Estimate potential ad revenue earnings from Twitter/X posts.
• url-validator — Validate URL format and check accessibility.
• user-agent — Parse and analyze user agent strings.
• vin-decoder — Decode Vehicle Identification Numbers (VIN) to get manufacturer, model, and year details.
• whois-lookup — Get comprehensive domain registration information
• world-clock-converter — Compare times across multiple time zones. Schedule meetings across the globe.

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Last updated: 2026-05-06 · Open the app · GitHub