DevToolbox
148 developer tools and 78 cheat sheets, all in your browser
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daniel0099

DevToolbox - 148 developer tools and 78 cheat sheets, all in your browser

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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.

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daniel0099
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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 reference guides. Nothing leaves your machine. Some of the tools: • JSON formatter, Base64 encode/decode, JWT decoder/builder • Hash generators, UUID/ULID, password generator • Regex tester, cron builder, diff checker • SQL formatter, curl-to-code converter, Docker helpers • CSS gradient builder, color tools, SVG editor • QR generator, mermaid diagram editor, code playground Cheat sheets & guides cover: • Git, Bash, Docker, Kubernetes, Terraform • Python, JavaScript, TypeScript, Rust, Go, Java • React Hooks, Next.js, Tailwind, Prisma, Drizzle • SQL, PostgreSQL, MongoDB, Redis • Vim, tmux, SSH, regex, cron, and 50+ more All free. Dark/light mode. English and German. No accounts, no server processing. I'd love to hear which tools or guides you'd want added — building based on what developers actually need!