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Fast, free, privacy-focused developer tools. JSON formatter, Base64 encoder, UUID generator, hash generator, and more. All processing happens in your browser — no data leaves your device.
DevToolbox148 developer tools and 78 cheat sheets, all in your browser
Free online PDF tools that process files entirely in your browser. Merge, split, compress, rotate, watermark, protect, and more. Your files never leave your device.
PDF Tools15 PDF tools that run in your browser. Files never leave.
daniel0099left a comment
Hi Product Hunt! I'm Daniel, a software engineer based in Vienna. Every time I needed to merge or compress a PDF, I had to upload sensitive documents to some random server. Contracts, invoices, medical records — sent to who knows where. PDFUtils runs 100% in your browser using pdf-lib and pdf.js. Your files never leave your device. No uploads. No server processing. No accounts. What you can do:...
PDF Tools15 PDF tools that run in your browser. Files never leave.
daniel0099left a comment
Hey Product Hunt! I'm Daniel, a software engineer from Vienna. I kept switching between dozens of random websites for simple dev tasks — Base64 encoding, JSON formatting, hash generation. Each one with cookie banners, ads, and upload prompts for things that should just run locally. So I built DevToolbox — 148 developer utilities that run entirely in your browser, plus 78 cheat sheets and...
DevToolbox148 developer tools and 78 cheat sheets, all in your browser