Portable Secret
Open-Source HTML files that self-decrypt offline
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Hey HN, We've decided to open-source our Portable Secret. It's a free tool that generates self-contained HTML files which decrypt locally in your browser.Check it out at https://alcazarsec.github.io/portable-secret/. Source code: https://github.com/alcazarsec/portable-secretThe project is inspired by an old post (https://news.ycombinator.com/item?id=34083366) by mprimi, who coined the term "Portable Secret." I really liked the idea and wanted to improve the security of the KDF and the UX. I hope he's honored that so many people have iterated on it over the years.Let me know what you think. I love reading all feedback (good or bad). I'll be monitoring the thread to reply to comments.Thank you!
HN · launched Feb 26, 2026 · 5 upvotes (top 89%) · 0 views
Niche: encryption and cryptography tools · 147 launches, 21 in the last 7 days ▲ +40% · Explore this niche →
Category and tags
- Security
- Dev tools
- Prosumer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 147 launches in encryption and cryptography tools →
Could you build this?
Yes The tool uses standard client-side Web Crypto APIs within a static HTML template to encrypt and decrypt data locally.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 266 launches clear the similarity bar, closest 8 shown.
Attention rank: #257 of 267 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 120 days after the earliest competitor.
- Air-gapped file encryption as self-decrypting HTML page · hn · 2026-09-24 · 90 upvotes · similarity 0.53
- UniDoc Encryption · ph · 2026-09-29 · 1 upvotes · similarity 0.51
- witness-vault · github · 2026-10-01 · 26 upvotes · similarity 0.47
- Let's Seal · hn · 2026-07-27 · 94 upvotes · similarity 0.46
- Hidetext.sh · hn · 2026-07-11 · 7 upvotes · similarity 0.46
- Bucket · hn · 2026-01-25 · 9 upvotes · similarity 0.46
- JWT Secret Key Generator · ph · 2026-11-11 · 1 upvotes · similarity 0.45
- Flashpaper · hn · 2026-07-28 · 25 upvotes · similarity 0.44
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