A private memory of every page you keep.
Save pages with one click. Search by meaning, not keywords. The server stores only ciphertext — your URLs, titles, and page content stay readable in your browser only.
Three layers of privacy, working in concert.
Nothing is saved automatically. Click the popup or
right-click → Save. The extension uses
activeTab
only — it can't read pages you haven't asked it to.
A 24-word recovery passphrase derives a vault key that lives only in your browser. Every record is encrypted before upload. The server holds ciphertext + an HMAC of the URL for dedup.
MiniLM embeddings run locally. Long pages are chunked with a 256-token sliding window so search returns the relevant passage, not the page average. Queries never leave your machine.
What the server sees — and what it doesn't.
- /Your email + Argon2id password hash
- /A per-device API key hash
- /Ciphertext + IV of each captured record
- /An HMAC of the canonical URL (blind index for dedup)
- /A risk score (0–100) and reasons array
- /Timestamps and size in bytes
- /The URL, title, or text of any captured page
- /Your passphrase or vault key
- /Your search queries
- /The contents of any decrypted record
- /Which pages you have or haven't captured
Free. Forever.
No paid tier. No upsell. No trial expiry. We don't run ads, we don't sell data, and structurally we don't have any to sell — the server only ever holds ciphertext your browser produces.
Capture, search, paired browsers, recovery mnemonic, AI-chat extractors — every feature, for everyone.
Pair Chrome, Edge, and Brave to one encrypted vault. Per-device API keys. Revoke instantly.
Generous per-account headroom. If you ever hit it we'll work it out — no surprise paywall.
Try it on the next page you wish you could find again.
Install the extension, sign in at app.browserfog.com, save your first page. The API + extension are open source.