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UserSearch Forensic Capture · Free browser extension

Capture the Web as Evidence

100% local. 100% free. Verifiable by anyone.

A browser extension that captures web pages as evidence, not screenshots — sealed, timestamped, filed into cases, and verifiable by anyone, offline. Everything runs inside your browser, on your machine — your evidence never touches a cloud.

100% Local

No cloud, no account, no telemetry — everything runs on your machine

Sealed at Capture

SHA-256 fingerprints and a tamper-evident seal, the moment you capture

Cases & Notebook

Evidence filed into cases beside a permanent, hash-chained notebook

Verifies Offline

Every export ships its own verifier — no internet, no install, any machine

Coming soon
Chrome Web Store
Coming soon
Edge Add-ons
Coming soon
Firefox Add-ons
Everything included

Every Feature. Free.

There are no tiers to compare, so here is the whole column of ticks. Tools like this usually cost hundreds of dollars a year — Forensic Capture ships the full toolkit to everyone.

UserSearch Forensic Capture

The only plan there is

Free
runs in your browser · no cloud · no catches

Capture

  • Full-page capture — auto-scroll, stitched
  • Visible area, pick-element & drag-region capture
  • Overlay & pop-up capture
  • Sealed screen recording — as seen and heard
  • Keyboard-shortcut & right-click capture
  • Captures continue in the background
  • Every capture keeps the image, the page snapshot and the raw server response

Evidence integrity

  • SHA-256 fingerprint on every item
  • Sealed, signed master fingerprint per capture
  • Two independent timestamp anchors (RFC 3161 + OpenTimestamps)
  • Clock accuracy checked at capture
  • Verify integrity anytime + “Verify a file” tool
  • Offline verifier inside every export
  • Tamper-evident by design

Cases & notebook

  • Unlimited cases, always-visible active case
  • Tags, bulk tagging & full-text search — even the text inside screenshots
  • Subjects & dossiers
  • Case dashboard & chain-of-custody timeline
  • Permanent hash-chained notebook — timestamped & operator-attributed
  • Page monitoring on a schedule
  • Encrypted case backup & colleague handoff

Reports & export

  • One-click whole-case PDF report
  • Per-capture PDF report
  • Self-contained evidence bundle, verifier included
  • Exhibits — annotate & redact a copy, the sealed original never changes
  • Operator identity stamped on every capture
  • Strictly factual reports, usable in any jurisdiction

Experience

  • Plain-language UI with “?” explainers & glossary
  • Guided tours & first-run readiness check
  • Text recognition & video processing built in, fully local
  • No account, no telemetry, no analytics
  • Dark UI matched to the UserSearch dashboard
  • Support: [email protected]

What you’ll never hit

  • Capture caps
  • Scroll limits
  • Subscriptions
  • License keys
  • Paywalled reports
  • Feature tiers

Part of the UserSearch toolkit — free because investigators shouldn’t have to pay to keep their own evidence intact.

How it works

Sealed the Moment You Capture

A screenshot is a picture. A Forensic Capture is a sealed record — here is what happens in the second after you click.

1 · Capture

Full page, region, element or screen recording — stored as the image, the page snapshot and the raw server response.

2 · Fingerprint

Every artifact gets its own SHA-256 fingerprint, computed on your machine the moment the evidence is captured.

3 · Seal & sign

The fingerprints combine into one master fingerprint, signed by your installation — a tamper-evident seal on exactly what was captured.

4 · Timestamp

An anonymous fingerprint — never the evidence — goes to two independent timestamp services (RFC 3161 + OpenTimestamps), showing the evidence existed no later than the anchor time.

What a fingerprint means — in plain language

A SHA-256 fingerprint is a short code calculated from a file’s exact contents — like a fingerprint for data. Change even one pixel and it comes out completely different, and no computer on earth is known to be able to fabricate a different file with a matching fingerprint. Verification simply redoes the math and compares: the same fingerprint means the file is bit-for-bit unchanged since capture — checkable by anyone, offline, on any machine, with the verifier shipped inside every export.

Cases & notebook

A Case File, Not a Camera Roll

Every capture lands in a case — tags, subjects, a chain-of-custody timeline, and a notebook rebuilt for the web era.

A notebook that can’t quietly change

Entries are timestamped, operator-attributed and hash-chained — never editable or deletable. Corrections are appended, like a paper notebook.

Filing is permanent by design

Evidence archives but never deletes or moves between cases — the record you show later is the record you built at the time.

One-click case report

One PDF: every capture with its fingerprints and timestamps, linked notes, exhibits and the full timeline — strictly factual, designed for evidential use.

Hand off a whole case as one file

One passphrase-encrypted file. When a colleague opens it, their copy re-verifies every item against its seals on arrival.

Investigator’s Notebook
Case: DEMO-2026-001
09:41 · A. Reyes

Opened case. Subject profile URL received from client intake.

chained ⛓ fingerprint includes previous entry
09:47 · A. Reyes capture

Captured subject profile page — listing shows item as “new / boxed”.

chained ⛓ fingerprint includes previous entry
10:12 · A. Reyes capture

Seller responded in chat. Captured conversation overlay.

chained ⛓ fingerprint includes previous entry
10:26 · A. Reyes

Correction to 09:41 — intake email arrived 09:38, not 09:40. (Appended; originals are never edited.)

chained ⛓ fingerprint includes previous entry
Permanent record — entries append only, independently timestamped
Private by architecture

Audit Us. Everything Stays on Your Machine.

Forensic Capture is a browser extension — it runs entirely on your device, not in a cloud. Your captured evidence never leaves your machine — only anonymous cryptographic hashes go to timestamp authorities. That isn’t a promise buried in a policy: the extension keeps a local network activity log of every request it has ever dispatched, so you can audit it yourself.

Happens 100% on-device

  • Every capture, recording and exhibit
  • Your notebook, cases and subjects
  • Report generation and OCR
  • Sealing, signing and verification
  • Your operator identity

Even text recognition and video processing are bundled inside the extension — nothing ever loads from the internet.

What ever leaves your machine

  • Anonymous cryptographic hashes to timestamp authorities — only if timestamping is enabled
  • Your evidence — never
  • Telemetry, analytics or usage data — never
  • Account data — there is no account — never
Network activity log
10:12:07 → timestamp.authority · hash only · 32 bytes
10:12:08 → opentimestamps.org · hash only · 32 bytes
evidence uploads · none · ever
FAQ

Frequently Asked Questions

Yes — completely. No tiers, no capture caps, no scroll limits, no subscriptions, no license keys, and no account needed. Forensic Capture is part of the UserSearch toolkit, and the full feature set is free for everyone.

Evidence-Grade Capture Is Coming to Your Browser.

UserSearch Forensic Capture is on its way to the Chrome, Edge and Firefox stores. A free extension that runs entirely in your browser — never in a cloud — and produces evidence anyone can verify. This page links straight to the stores the moment they go live.

100% Free
100% Local
No Account Needed
Chrome
Coming soon
Edge
Coming soon
Firefox
Coming soon
[email protected]