Launching today
CryptoWave
Free browser based encryption&audio converter — zero server
1 follower
Free browser based encryption&audio converter — zero server
1 follower
Most online encryption tools process your data on their servers — you have no way to verify what happens to your secrets. CryptoWave is different: - 100% client-side — uses the browser's native Web Crypto API, the same engine that powers HTTPS - No server, no database, no accounts — nothing to breach - Combines crypto tools AND audio conversion in one place - Open to inspect — open DevTools Network tab and verify zero data is transmitted
Hey Product Hunt! 👋
I built CryptoWave because I had a simple but unsettling realization
one day — I was pasting sensitive API keys into a random online AES
encryptor, and I had absolutely no idea where that data was going.
So I asked myself: why can't all of this run locally in the browser?
Turns out it can. The Web Crypto API is built into every modern
browser and is incredibly powerful. Combined with FFmpeg.wasm for
audio conversion, I was able to build a tool where:
✅ Zero data ever leaves your device
✅ No accounts, no tracking, no ads
✅ Works offline once the page loads
The hardest part was getting FFmpeg.wasm to work correctly —
it requires special Cross-Origin Isolation headers, which took
some digging to configure properly on Vercel.
I'd love feedback from the community, especially:
- Are there any crypto tools you wish existed?
- Any audio formats I should add?
- Anything that feels confusing in the UI?