Free Invoice Generator Web App with PDF Format

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Project link: invoi.xyz

Invoi is a browser-first invoice generator with no auth and no server-side storage. It keeps everything local in IndexedDB. That makes it a good fit for quick invoices, one-off client billing, and privacy-sensitive workflows.

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The app gives you live preview while you type, so the invoice layout updates immediately. You can download the result as a PDF through browser print. It also supports multiple currencies, bank details, payment notes, and mobile use.

invoice web app free

Why It’s Useful

The main appeal is speed. You open the app, fill in the fields, and export without creating an account. For freelancers and small teams, that cuts out a lot of friction.

Local storage also matters. If you want invoices to stay on your device, this avoids the usual upload-and-sync workflow. Mobile support makes it usable when you are away from your desk.

Getting Started

  1. Open invoi.xyz.
  2. Enter the client, line items, and currency.
  3. Add bank or payment details if needed.
  4. Check the live preview for layout issues.
  5. Use browser print to save the invoice as a PDF.

About the author

Hairun Wicaksana

Hi, I just another vibecoder from Southeast Asia, currently based in Stockholm. Building startup experiments while keeping close to the KTH Innovation startup ecosystem. I focus on AI tools, automation, and fast product experiments, sharing the journey while turning ideas into working software.

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