Zhang Jim

Zhang Jim

Solo developer. Building a web and game.
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Maker History

  • CoolPDF
    CoolPDFFree PDF tools that never upload your files
    Aug 2026
    • 🎉
    Joined Product HuntJuly 29th, 2026

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2d ago

CoolPDF - Free PDF tools that never upload your files

Merge, split, compress, sign and convert PDFs right in your browser. Your files never leave your device — every tool runs 100% client-side with WebAssembly. No uploads, no sign-up, no servers, free forever. Open source (AGPL-3.0).
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