How to Use the Invoice Number Generator & Tracker
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1
Set your prefix (e.g. INV-, 2026-), padding zeros, and starting number.
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2
Click "Generate Next Invoice Number" to auto-increment.
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3
Your running sequence is saved automatically to your browser's localStorage.
Practical Example & Use Case
Common Real-World Scenario
Automatically tracking invoice IDs in sequence (INV-0001, INV-0002...) for freelance client billing.
Technical Notes & Limitations
Browser Engine Architecture
Numbers are persisted in browser localStorage. Clearing browser data will reset the counter.
Frequently Asked Questions
Will my invoice counter reset if I close the browser?
No. The counter is saved in your browser's localStorage and persists across sessions unless you manually clear browser storage.
Can I set a custom starting number?
Yes. You can configure any starting number (e.g. 1001 or 2026-001) in the settings panel.