Freelancer builds free, no-signup invoice generator after frustration with paywalled tools

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A freelancer developed InvoiceLark, a browser-based invoice generator, after repeatedly encountering paywalls, watermarks, and forced signups on supposedly free tools. The app requires no account, imposes no invoice limits, and keeps all data stored locally on the user's device with no server or database involved. It offers six invoice templates, six currency options, a built-in hourly rate calculator, and PayPal QR code support. Users without a logo can auto-generate a letter-badge icon by simply entering their business name, a feature that has drawn the most positive feedback. Built entirely with vanilla JavaScript, the tool also supports JSON and CSV export, ensuring users retain full ownership of their data.

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