Browser Extensions & Plugins · United States
AI semantic search for your browser history and PDFs
Ahrefs Domain Rating set in type 2 Nov 2026, reset 1 Nov 2026.
A browser extension that lets you search your browsing history and PDFs by meaning instead of keywords, with all processing happening locally on your device.
Histiq is a browser extension for Chrome and Edge that uses AI to search your browsing history and PDFs by meaning rather than exact keywords. When you visit a page, Histiq automatically indexes it locally on your device using a small embedding model. You can then search across all your indexed pages and PDFs by describing what you remember about them, and the tool finds matches via semantic similarity in under 50 milliseconds.
All processing happens entirely on your device. The extension runs a small embedding model directly in your browser to convert page content and search queries into vectors, with no data sent to external servers. Your browsing history and search activity never leave your device, and no account or signup is required.
Histiq indexes the full text of web pages and can also extract and index PDFs up to 50 MB. It includes privacy controls to exclude domains, mask sensitive URLs, and set retention windows. The extension works identically across Chrome and Edge and includes features like encrypted local backup and export.
Pricing model: Freemium
Free 14-day trial (no credit card required, starts on install). Then: Monthly $6.99/mo, Annual $4.17/mo (billed $49.99/year, save 40%), or Lifetime $129 one-time payment.
| Metric | Value |
|---|---|
| Domain Rating | 1 no change since last check |
| Trust Flow | 2 no change since last check |
| Citation Flow | 15 no change since last check |
| Referring domains | 30 no change since last check |
| External backlinks | 71 no change since last check |
Ahrefs Domain Rating set in type 2 Nov 2026, reset 1 Nov 2026. Lead topic: Recreation (2). Majestic set 1 Nov 2026, reset 1 Nov 2026. Link data typeset by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
| Domain age | 6 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | HOSTINGER operations, UAB |
| DNSSEC | Not signed |
Measured after Histiq went live on Zivaro Launch on 1 November 2026.
Day 1 since launch. Next receipt: day 30, 1 Dec 2026. These are measurements, not proof of cause: many things move these numbers. Figures we have not measured are left out.
Yes. Histiq stores everything in your browser's local IndexedDB. Embeddings are generated on your device with a small in-browser model (Xenova/MiniLM). Nothing is sent to any server, and you can verify this by inspecting the extension's network requests.
When you visit a page, Histiq runs a small embedding model (Xenova/MiniLM) directly in your browser to convert the page content into a 384-dimensional vector. When you search, your query is converted the same way, and the closest matches are returned via cosine similarity, all on your device.
Yes. When you open a PDF in your browser, Histiq automatically detects it, extracts the text layer using PDF.js, and indexes it in chunks just like a web page. You can search across research papers, contracts, documentation, and any text-based PDF by meaning. PDFs up to 50 MB are supported.
The trial runs entirely inside the extension and starts on install with no signup, no card, and no account required. All features are unlocked for 14 days from day one. After that, you pick a plan to keep using semantic search.
No. Indexing happens in a background service worker with idle-priority scheduling, and embedding generation is throttled to use unused CPU cycles. On a modern laptop, you won't notice Histiq is running.
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