PDFnoted — AI Contract Review & Free PDF Tools (Runs 100% in Your Browser) Product Hunt Chrome Extension Edge Add-on Website PDFnoted is a free, browser-based PDF workspace. Every tool runs client-side — your files never leave your device. Beyond the usual edit/convert toolbox, it ships an AI compliance review engine that checks contracts and policy documents against 174+ regulations across 11 industries and 3 jurisdictions (EU, US, China), then cites the specific legal provision behind each flagged risk. Looking for a specific job? Jump straight there:
- Remove a watermark from a PDF → AI Watermark Remover
- Find and clear hidden watermarks / faint stamps → Hidden Watermark Detection
- Strip metadata, comments, attachments and hidden objects → PDF Sanitizer
- Locate personal data before you share → Sensitive Data Detection & Masking
- Check a contract clause by clause → AI Contract Review
- Run a pre-delivery compliance scan → Compliance Check Why it exists Most "free PDF" sites upload your file to a server you know nothing about. That's fine for a meme, not for a signed NDA, a medical record, or a contract draft. PDFnoted does the work in the browser tab, so there is no upload step to trust and no file retention policy to read. The second gap is review. Plenty of tools will edit a PDF. Almost none will read it and tell you that clause 7.2 puts your personal data outside what GDPR Art. 44 allows. That's the part PDFnoted automates. The compliance engine Upload a contract or policy document → the engine parses it → flags risky clauses → cites the governing provision → suggests concrete redlines. What it checks Domain Coverage AI regulation EU AI Act (2024), China Generative AI Interim Measures, US TAKE IT DOWN Act (2025) Cross-border data GDPR Arts. 44–49, PIPL Arts. 38–43, China Data Export Security Assessment ESG reporting EU CSRD (2024), ISSB Standards, China Sustainable Disclosure Standards (2024) How it works: 14,901 parsed legal rules, retrieved in four passes — exact match → TF-IDF → citation expansion → authority reranking. Every flag carries a citation you can verify, not a confidence score you have to take on faith. → Try it: AI Contract Review The toolbox (27 tools, no upload) Clean — AI watermark removal · hidden watermark & faint stamp cleanup · PDF Clean (all hidden objects) · metadata / comment / attachment stripping · header & footer removal · stamp & seal removal Before you send — sensitive data detection & masking · pre-delivery compliance scan · 8-point pre-sharing checklist Convert — to Word · to Excel · to PPT · to JPG · to PNG / Text / Markdown Organize — merge · split · reorder · rotate · crop · delete pages Secure — password protect · unlock · e-sign · flatten Professional — watermark · page numbers · headers/footers · Bates numbering Advanced — OCR · PDF compare · AI translate · image → PDF · extract images → Full list: PDF Tools Editor + AI polish Click text to edit it inline, drop in images, then let AI polish, proofread, or translate the result. Exports embed CJK fonts (Source Han Sans), so Chinese/Japanese/Korean text doesn't turn into boxes downstream. → PDF Editor Privacy model Files are processed locally via PDF.js, pdf-lib and Fabric.js. Nothing is uploaded for the browser tools. The AI review features send only the extracted text needed to answer — and you can see exactly which page goes out before you confirm. Install Platform Link Web (no install) https://pdfnoted.com Chrome Chrome Web Store Microsoft Edge Edge Add-ons iOS / macOS App Store Research foundation The retrieval and ranking approach builds on published work — full citations on the Research References page:
- Zhang et al. (2024) — Document Parsing Unveiled
- Adhikari & Agarwal (2024) — PDF Parsing Tools Comparison
- Papagiannidis et al. (2025) — Responsible AI Governance
- ISO 32000-2:2020 (PDF 2.0) · ISO 37301:2021 (Compliance Management) Also open
- llms.txt — structured summary for AI crawlers
- Methodology — how the risk scoring works Maker Hui Tian — full-stack engineer working on document AI and compliance automation.
- GitHub: github.com/TianHuiIsMe
- Product Hunt: @hui_tian License This repository is a project showcase. Source for the browser extension and server components is proprietary. The compliance knowledge base follows the ISO 37301:2021 framework. PDFnoted © 2025–2026. Built with PDF.js, pdf-lib, Fabric.js and qwen-flash.