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invoice-generator

An invoice generator produces a professional PDF invoice from form input — your business details, the client, line items with quantities and unit prices, taxes, discounts, payment terms, and notes — ready to email or print. The ZTools Invoice Generator runs entirely in the browser, supports multi-currency display, automatic subtotal / tax / total calculation, customizable invoice numbering and date formats, your logo upload, multiple language presets (English, Spanish, French, German, Arabic, Japanese), and exports a clean, brand-safe PDF without watermarks — keeping freelance and small-business billing fast and free.

Use cases​

Freelancer monthly billing​

Solo consultants generate one invoice per client per month. Save the JSON template for each client, change the date and line items, export PDF in 30 seconds.

Small-business quick invoices​

A small shop bills a B2B customer for a one-off purchase. Skip the accounting software setup; produce a clean PDF and email it.

Cross-currency invoicing​

Freelancer in India bills a US client in USD. Multi-currency support emits the invoice in USD with proper formatting.

Internal expense and reimbursement​

Employees submit a reimbursement form. Use the invoice generator to create a clean record with line items and totals.

How it works​

  1. Enter your business details — Name, address, email, phone, tax ID. Upload a logo (PNG/SVG, transparent recommended).
  2. Add the client — Name, billing address, email. Save clients for reuse next month.
  3. Add line items — Description, quantity, unit price, optional discount. Subtotal calculates automatically.
  4. Add taxes and discounts — Per-line or invoice-wide. Multiple tax rates supported (e.g. VAT + city tax).
  5. Customise and export — Pick template (modern / classic / minimal), language, date format. Export PDF or save the JSON for next time.

Examples​

Input: 3 line items, 18% VAT, USD

Output: Subtotal $X, VAT $0.18·X, Total $1.18·X

Input: Invoice with 10% line-item discount + 5% invoice discount

Output: Discounts apply in order: line-item first, then invoice-wide on the discounted subtotal

Input: Bilingual (English + Spanish) layout

Output: Two-column header with translated labels

Frequently asked questions​

Is the PDF watermarked?

No. The PDF is clean and yours to keep. Free for commercial use.

Where is my data stored?

In your browser only. The "save client" and "save template" features write to local storage; nothing uploads.

Does it auto-number invoices?

Yes — pick a prefix (e.g. INV-) and starting number; each new invoice increments. Manual override always available.

Can I add my own bank details?

Yes — payment-info section accepts free-form text (IBAN, SWIFT, PayPal email, instructions).

Is it tax-software-grade?

It produces correctly formatted PDFs but does not file taxes. For VAT / GST returns, hand the PDF to your accountant or an accounting tool.

Can I customise the template?

Pick from three pre-built templates (modern, classic, minimal). For custom layouts, export the data as JSON and run through your own template engine.

Tips​

  • Save a client + line-item template — generating next month's invoice takes 30 seconds.
  • Use a transparent PNG logo for cleaner placement on white invoice paper.
  • Number invoices consistently (INV-2026-001) — easier for tax filing later.
  • Always include payment terms ("Net 30") and a polite "thank you" line — improves on-time payment.
  • Send PDFs as attachments to email — never as a link in chat; clients want the file in their inbox.

Try it now​

The full invoice-generator runs in your browser at https://ztools.zaions.com/invoice-generator — no signup, no upload, no data leaves your device.

Open the tool ↗

Last updated: 2026-05-05 · Author: Ahsan Mahmood · Edit this page on GitHub