yang changjiang's profile on Product Hunt

About

Hey Product Hunt! 👋 I'm a solo developer from China, and I've set myself a crazy goal: build 100 free tools in 14 languages. This is #1 — PasswordGen. Why? Because most online tools are English-only, closed-source, or littered with trackers. I want to prove you can make useful things that are: • Truly free — no paywalls, no forced signups • Truly private — everything runs in your browser • Truly global — 14 languages, not just English PasswordGen was built with the Web Crypto API (same RNG as TLS). It does not collect, store, or transmit anything. Open DevTools and check — zero network requests for password generation. I'm launching one tool at a time. QRfree is next. If you like the idea of 100 free, private, multilingual tools, say hi 👇 Wish me luck 🍀

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Tastemaker

Gone streaking

Gone streaking 5

Maker History

EditVideo30+ in-browser video tools. Zero uploads. Zero cost.
Sep 2026
SoundTool63 free audio tools & 14 virtual instruments in 14 languages
Aug 2026
PasswordGen14-language password generator — truly free, zero tracking
Jun 2026

🎉

Joined Product HuntJune 21st, 2026

Forums

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19d ago

EditVideo - 30+ in-browser video tools. Zero uploads. Zero cost.

EditVideo — 30+ free video tools that run entirely in your browser: compress, trim, merge, crop, GIF, subtitles, slideshows, color and more, in 14 languages. Real Whisper AI transcribes locally — no API, no server. WebAssembly + WebCodecs + WebGPU. Your file never leaves your device: 0 uploads, 0 signups, 0 watermarks. Next: video stabilization and AI upscaling.

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2mo ago

SoundTool - 61 free audio tools & 12 virtual instruments in 14 languages

SoundTool — free, browser-based audio toolkit with 61 tools and 12 playable virtual instruments. AI voice cloning, speech-to-text, text-to- speech, AI noise removal, hum-to-instrument, vocal tuner + trim, merge, convert, EQ, reverb, BPM and more. Every instrument records and exports WAV — no account, no upload, 100% client-side. 14 languages. Built by a solo developer on the Web Audio API. Zero data collection: your audio never leaves the browser.

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3mo ago

PasswordGen - 14-language password generator — truly free, zero tracking

PasswordGen — free, browser-based password generator. 14 languages, 22 tools (6-char to 64-char, PINs, hex, memorable). Uses Web Crypto API, zero data collection. 15 security guides (NIST/OWASP cited). Open DevTools: no network requests. 100% client-side. Next tool: QRfree.