FindThatPage Autor: Asik Mydeen

You read something last week and can't find it again. FindThatPage fixes that.

FindThatPage builds a private, full-text search index of every article, doc, thread, and page you visit — and runs entirely on your device. When you need to find it again, a single keyboard shortcut opens a spotlight-style overlay that searches your own browsing memory in milliseconds.

No cloud sync. No AI API. No account. No telemetry. Your reading history never leaves your computer.

What it does

Instant keyboard search. Press Ctrl+Shift+K on any page — a spotlight overlay appears, start typing.
Full-text search across titles, keywords, summaries, domains, and page body text. Powered by SQLite FTS5 with BM25 ranking.
Chip-based filter stacking. Type a term, press Tab to lock it in as a chip, then keep refining.
Smart chip prefixes: site:github.com, in:title react, in:body webassembly.
Highlighted snippets show where the match lives.
Deep links: pressing Enter opens the page scrolled directly to the matching text.
Frecency ranking with per-result visit count. Pages you re-read float to the top.
Empty-state sort toggle: "Most recent" (frecency) or "Most visited" (raw visit count).
30-second Undo Forget for accidentally deleted results.


Privacy is the product, not a feature

Everything is local. All data is stored in SQLite (WebAssembly, via Worker) and IndexedDB on your device.
No AI APIs. Search is keyword + BM25 ranking, no remote model calls.
Strict content gates: password-field pages, banking/auth domains, incognito, localhost, private networks, and .internal / .corp / .home.arpa hostnames are all skipped.
Full user control: per-domain exclusion list, pause indexing, export/import as JSON, one-click wipe.
Only your extension preferences sync (if you opt into Firefox Sync for extension settings) — page contents never sync.


Keyboard shortcuts

Ctrl+Shift+K — open search overlay on the current page
Tab — add the current term as a filter chip
Backspace on empty input — remove the last chip
Arrow keys — move between results
Enter — open result in new tab (scrolled to match)
Ctrl+Enter — open in background tab, keep searching
Shift+Enter — open in foreground but keep overlay open
Escape — close overlay


How it works (technical)

Manifest V2 on Firefox, built with WXT 0.20 + React 19 + TypeScript.
SQLite compiled to WebAssembly with an FTS5 virtual table (Porter tokenizer, BM25 ranking).
On Firefox, the database runs in a dedicated Worker spawned directly from the background page (Chromium uses an offscreen document; this is a per-browser build).
Retention policy prunes old non-pinned pages weekly (default 180 days / 20,000 pages, configurable).
Content script runs at document_idle + a 10-minute visible-tab re-index loop for long-lived SPAs.
Zero network calls from the extension's own code — you can verify in the browser devtools network panel.