Proofsmith Labs builds focused browser extensions for analysts, developers, translators, consultants, writers and support teams. Each tool does one job well — and every one of them keeps your data on your own device.
Ten extensions, one shared standard: local-first storage, no accounts, no telemetry. Each one has a free tier you can actually use.
Capture charts from any dashboard, annotate, and turn them into polished reports. Your metrics, one click from screen to slide.
Pro: $8/month or $69/yearOverlay your design on the live page, spot mismatches, measure gaps, and ship pixel-perfect front-ends.
Pro: $10/month or $79/yearRule-based QA for translations: catch number errors, terminology drift and omissions in Smartcat, Crowdin and MateCat.
Pro: $9/monthDebug APIs faster: keep environments, replay requests, and diff JSON responses — all stored locally in your browser.
Pro: $5/monthTake frame-accurate notes on videos: timestamped notes, frame capture, A-B loop. Built for film study and video essays.
Pro: $6/month or $49/yearFlag risky clauses in NDAs and contracts before you sign. A review aid — not a lawyer.
Pro: $19/monthTrack every job application in one kanban board. Save postings anywhere, match keywords, get follow-up reminders.
Job Search Pass: $29 one-time or $7/monthSnip charts and frameworks from any report into a searchable library, rebuild them into PowerPoint in one click.
Pro: $12/month or $99/yearKeep your story bible beside your draft: characters, timeline and foreshadowing tracked while you write in Google Docs.
Pro: $7/month or $59/yearType / in Zendesk to insert ticket-ready replies with variables filled. Save minutes on every ticket.
Pro: $9/month or $69/year per seatThree rules that apply to every extension we ship.
Your snapshots, notes, documents and settings live in your browser — never on our servers. Most of our tools have no server at all.
We don't require sign-ups and we don't track you. Install, use, and the only thing we ever see is an email you choose to send us.
Every extension is genuinely useful for free. Pro plans unlock higher limits for people who rely on the tool daily.
Proofsmith Labs is an independent software studio making browser extensions for professionals. We are a small team and we read every message.
Questions, feedback or support: support@proofsmith.tools
Payments and invoicing for our products are handled by Paddle.com, our Merchant of Record.