Filesty
Free file tools that work entirely in your browser
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Rafał K

Filesty - Free file tools that work entirely in your browser

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Filesty is a collection of free file conversion and utility tools. Everything runs client-side in your browser. Your files never leave your device - nothing is uploaded to any server. No account required. No watermarks. No limits.

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Rafał K
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Hey Product Hunt! 👋 I built Filesty because I was frustrated with file tools that upload your files to unknown servers "just to convert a JPG." The idea is simple: everything runs in your browser using native browser APIs (Canvas, WebAssembly, File API). Your files never leave your device - not even for a millisecond. Current tools: - JPG ↔ PNG conversion - Image compression - PDF merge - JSON formatter & validator - Base64 encoder/decoder What's next: I'm working on 130+ tools total, all client-side. Format conversion matrix (PNG→WebP, HEIC→JPG etc.), PDF split, CSV tools and more. Would love your feedback - especially which tools you'd find most useful. What's the one file tool you use most often that you wish was privacy-first?