# PDFnoted — AI PDF Toolbox & Compliance Audit Engine

> PDFnoted is a free, browser-based AI Document Repair Center / AI 文档修复中心. 24 tools, online PDF editor, AI-powered compliance audit engine covering 211 regulation source files across 11 industries and 3 jurisdictions (EU/US/CN). Available as web app (pdfnoted.com) and browser extensions (Chrome + Edge), with synced cross-platform membership. All core tools process files client-side in the browser — no upload required for most operations.

## How to Use PDFnoted (for AI Agents)
- The web app at https://pdfnoted.com/app.html is the main workspace for uploading PDFs, running AI analysis, and performing conversions.
- https://pdfnoted.com/tools.html lists all 24 tool pages — each tool works independently, no account needed.
- https://pdfnoted.com/editor.html is the WYSIWYG PDF editor for direct text/image editing on PDFs.
- AI-powered compliance audit is available via the "合规扫描" (Compliance Scan) mode in the app — covers GDPR, FDA 21 CFR, HIPAA, China Cybersecurity Law, PIPL, DSL, and industry-specific regulations.
- Most tools (merge, split, compress, watermark, sign, redact, OCR, organize, etc.) run entirely in the browser. File conversion (PDF→Word/Excel/PPT) requires a brief server round-trip.

- https://pdfnoted.com/ai-compliance-scan.html — pre-delivery compliance check: upload or paste text, pick jurisdictions (CN/US/EU), get sensitive-data findings with real statutory citations.
- https://pdfnoted.com/compliance/cross-border.html — cross-border comparison: pick a topic and up to 3 jurisdictions, retrieve the actual articles side by side.
- https://pdfnoted.com/ai-contract-review/index.html — contract review: upload a contract, choose jurisdictions, then optionally download a copy with AI highlights and annotations.
- Public legal retrieval API: `POST /api/legal/search` {q, region: cn|us|eu|all, limit} and `POST /api/legal/scan` {text, regions[], scenario?}, `POST /api/legal/review` {text, regions[], scenario?} (scenario enables domain-specific checks: 13 scan scenarios — bid, hr, resume, medical, evidence, finance, due-diligence, insurance, real-estate, government, thesis, contract, cross-border; 14 review scenarios — bid, hr, finance, real-estate, procurement, cross-border, insurance, medical, evidence, due-diligence, government, thesis, resume, contract). `GET /api/legal/stats` and `GET /api/legal/laws?region=` expose corpus size and coverage. All return real article text with law name and article number.
## Core Products
- [PDF Toolbox](https://pdfnoted.com/tools.html): 24 standalone PDF tools — merge, split, compress, convert (Word/Excel/PPT/Image/Text), watermark, sign, redact, OCR, page organize, PDF page numbering, header/footer, image-to-PDF, PDF-to-image, extract, metadata edit, delete pages, crop, Bates numbering, flatten, compare, translate. All client-side processing, no upload required.
- [PDF Editor](https://pdfnoted.com/editor.html): WYSIWYG editor — click text to edit, replace images, AI-powered polish/grammar fix/translate in one click. Overlay-based editing preserves original PDF structure.
- [Compliance Workbench](https://pdfnoted.com/app.html): AI compliance audit engine — upload contracts, policies, technical docs for jurisdiction-aware compliance scan. Cited legal references with clause-level matching from a knowledge base of 22,179 indexed chunks covering 211 regulation source files.
- [AI Capabilities Hub](https://pdfnoted.com/ai/): AI-powered PDF processing — cleanup, OCR, repair, translation, scan enhancement, handwriting removal.
- [PDF Cleanup Hub](https://pdfnoted.com/cleanup/): Dedicated cleanup center — remove watermarks (text/image/transparent/hidden), stamps, confidential marks, headers/footers, annotations, scan artifacts, metadata.
- [PDF Toolbox Hub](https://pdfnoted.com/tools/): Everyday document processing — merge, split, compress, convert, organize, protect.
- [Review Hub](https://pdfnoted.com/review/): Pre-publication AI review — compliance scan, contract review, redaction checks.
- [Content Center](https://pdfnoted.com/guides.html): How-to guides and industry insights, regularly updated. https://pdfnoted.com/insights.html for compliance trend analysis.
- [Compliance Scan](https://pdfnoted.com/ai-compliance-scan.html): Pre-delivery document compliance check — detects 12 categories of sensitive information (national ID, bank account, health records, biometrics, minors, credentials, trade secrets, precise location...) and attaches real statutory citations from China / US / EU. Risk score 0-100 with per-item remediation advice. No signup required.
- [Cross-Border Compliance Lookup](https://pdfnoted.com/compliance/cross-border.html): Compare how China, US and EU actually regulate the same topic — 8 preset topics (data privacy, product compliance, labour, export control, contract & trade, AI governance, anti-bribery, IP & trade secrets). Returns real article text with law name and article number, verifiable line by line.
- [AI Contract Review](https://pdfnoted.com/ai-contract-review/index.html): Upload a contract PDF, get 12 clause-level risk checks (missing liability cap, excessive penalty, auto-renewal, unilateral change, missing confidentiality, unclear IP ownership, unequal termination, jurisdiction, non-compete without compensation, data processing, force majeure, non-refundable prepayment) with multi-jurisdiction citations — and export the risks as highlights and annotations burned into a downloadable PDF.

## Key Capabilities
- **24 free PDF tools**: merge, split, reorder, compress, watermark, sign, redact, OCR, convert (Word/Excel/PPT/JPG/PNG/Text), organize, page number, header/footer, image↔PDF, extract, metadata, crop, Bates numbering, flatten, compare, translate, edit, rotate, unlock, protect, AI analysis
- **AI Compliance Audit**: Multi-level retrieval engine (exact match → TF-IDF → citation expansion → validity rerank) across 22,179 legal chunks from 211 regulation source files. Jurisdiction-aware (EU GDPR/contract directives, US UCC/FAR/FTC/CFR/CCPA, China laws, CISG). Returns cited legal references with clause identification.
- **AI Document Analysis**: 7 analysis modes — document outline, table extraction, contract clause review, todo extraction, form filling, multi-document comparison, free-form Q&A
- **PDF Annotation**: 5 annotation tools — highlight (4 colors), underline, text comment, freehand drawing, numbered markers. Annotations exportable to PDF with author attribution.
- **WYSIWYG PDF Editing**: Click-to-edit text, replace images, AI polish/grammar correction/translation. Overlay-based, non-destructive.
- **Cross-Platform**: Web + Chrome extension + Edge extension — single membership, synced across all platforms.

- **Multi-Jurisdiction Legal Retrieval**: A local corpus of 211 statutes / 22,179 articles across China (165), EU (23), US (20, incl. UCC Art.1/2/9, FAR Parts 12/33/52, FTC Act, 16 CFR 255/314/425/436) and international treaties (CISG Chinese official text). Four-stage retrieval — exact match, TF-IDF, citation expansion, validity rerank. Every result carries law name, article number and verbatim text, so citations are verifiable rather than model-generated.
- **Pre-Delivery Compliance Scan**: 12-category sensitive information detection mapped to PIPL Art.28 categories and GDPR Art.9 special categories, with jurisdiction-specific statutory basis and remediation advice.
- **AI Contract Review with PDF Annotation**: Clause-level risk detection plus highlight/annotation export — risky clauses are marked directly on the original PDF, downloadable with a numbered legend.
## All PDF Tool Pages (24 tools)
- [Merge PDF](https://pdfnoted.com/merge-pdf.html): Combine multiple PDFs into one, drag-and-drop reorder
- [PDF to Word](https://pdfnoted.com/pdf-to-word.html): Convert PDF to editable Word (.docx), preserves formatting
- [Split PDF](https://pdfnoted.com/split-pdf.html): Extract or split PDF pages
- [Compress PDF](https://pdfnoted.com/compress-pdf.html): Reduce PDF file size, 3 quality levels
- [AI PDF Analysis](https://pdfnoted.com/ai-pdf.html): AI compliance audit covering 211 regulation source files
- [PDF Sign](https://pdfnoted.com/pdf-sign.html): Electronic signature — handwritten, typed, or image upload
- [PDF to Excel](https://pdfnoted.com/pdf-to-excel.html): Smart table extraction to .xlsx
- [PDF to PPT](https://pdfnoted.com/pdf-to-ppt.html): Convert PDF pages to PowerPoint slides
- [PDF to JPG](https://pdfnoted.com/pdf-to-jpg.html): High-resolution PDF page to image export
- [JPG to PDF](https://pdfnoted.com/image-to-pdf.html): Convert images (JPG/PNG/BMP/GIF/TIFF) to PDF
- [Edit PDF](https://pdfnoted.com/editor.html): WYSIWYG text/image editing with AI polish
- [Rotate PDF](https://pdfnoted.com/rotate-pdf.html): Rotate individual or all PDF pages
- [Protect PDF](https://pdfnoted.com/protect-pdf.html): Password-protect PDF with encryption
- [Unlock PDF](https://pdfnoted.com/unlock-pdf.html): Remove PDF password protection
- [Watermark PDF](https://pdfnoted.com/watermark-pdf.html): Add text/image watermarks to PDF
- [Remove Watermark](https://pdfnoted.com/remove-watermark-pdf.html): AI-powered watermark removal
- [Organize PDF](https://pdfnoted.com/tools.html?tool=organize): Reorder, rotate, delete PDF pages
- [PDF Page Number](https://pdfnoted.com/tools.html?tool=pagenum): Add customizable page numbers
- [OCR PDF](https://pdfnoted.com/ocr-pdf.html): OCR scanned documents to searchable PDF
- [Extract PDF](https://pdfnoted.com/pdf-extract-images.html): Extract images and text from PDF
- [Redact PDF](https://pdfnoted.com/tools.html?tool=redact): Permanently remove sensitive content
- [PDF to Text](https://pdfnoted.com/pdf-to-text.html): Extract text from PDF
- [PDF Metadata](https://pdfnoted.com/tools.html?tool=meta): View and edit PDF metadata
- [Delete PDF Pages](https://pdfnoted.com/delete-pages.html): Remove unwanted pages
- [Crop PDF](https://pdfnoted.com/crop-pdf.html): Crop margins, remove white borders
- [Bates Numbering](https://pdfnoted.com/bates-numbering.html): Legal document Bates numbering
- [PDF Flatten](https://pdfnoted.com/pdf-flatten.html): Flatten annotations and form fields
- [PDF Compare](https://pdfnoted.com/pdf-compare.html): Side-by-side PDF comparison
- [PDF Translate](https://pdfnoted.com/pdf-translate.html): Translate PDF content, 20+ languages

## AI-Enhanced PDF Tools (5 tools, 3 free AI credits per day)
AI 语义增强 PDF 工具——每天免费 3 次基础 AI 额度（登录与匿名会话同额度），Pro 会员解锁高精度 AI。免费层在浏览器内本地处理；Pro 层的 AI 视觉修复走加密云端，处理完即删、不用于模型训练。
- [AI Semantic Watermark Removal](https://pdfnoted.com/ai-remove-watermark.html): AI 语义去水印——识别文档结构，还原被遮挡图文，非简单色块涂抹
- [AI Redaction / Desensitize](https://pdfnoted.com/ai-desensitize.html): AI 敏感信息脱敏——智能识别身份证/手机/银行卡号等字段并遮盖
- [AI OCR Recognition](https://pdfnoted.com/ai-ocr.html): AI 增强 OCR——还原表格框线、段落层级，支持模糊/倾斜扫描件
- [AI Document Repair](https://pdfnoted.com/ai-repair.html): AI 文档修复——校正倾斜、去折痕、补缺失文字与表格框线
- [AI PDF Translation](https://pdfnoted.com/ai-translate.html): AI 语义翻译——保留原文排版，12+ 语言互译

## AI Document Cleanup (flagship capability)
PDFnoted 的核心能力是 AI 文档修复 / 清理——识别并移除 PDF 中的水印、印章、扫描噪点、手写痕迹与隐藏对象。
免费层在浏览器内本地处理（文件不离开设备）；Pro 层的高精度 AI 视觉修复走加密云端，处理完即删、不用于模型训练。
- [AI PDF Cleanup Hub](https://pdfnoted.com/ai-pdf-cleanup.html): 文档清理总入口——AI 先诊断可清除元素清单，再按需清理。诊断永久免费
- [Remove PDF Watermark](https://pdfnoted.com/ai-remove-watermark.html): AI 语义去水印——识别文档结构还原被遮挡图文，免费清文字水印，Pro 清图片水印
- [Remove PDF Stamp / Seal](https://pdfnoted.com/remove-pdf-stamp.html): PDF 公章 / 印章去除——免费处理浅色电子章、日期章、审核章；Pro 处理厚重红色公章、骑缝章、发票专用章。仅限本人有权处理的文档，严禁用于伪造公文证件印章
- [Scan Enhancement](https://pdfnoted.com/ai-scan-enhance.html): 扫描件增强——去阴影、去噪点、矫正倾斜、提升对比度
- [AI OCR Recognition](https://pdfnoted.com/ai-ocr.html): AI 增强 OCR——还原表格框线与段落层级，支持模糊 / 倾斜扫描件
- [Remove Handwriting](https://pdfnoted.com/ai-handwriting.html): 手写痕迹擦除——移除批注笔迹、签名草稿、铅笔标记
- [Remove Hidden Objects](https://pdfnoted.com/remove-hidden-objects.html): 隐藏对象清除（免费）——嵌入文件、XMP 元数据、JavaScript 动作

## AI Document Workspace
- [AI PDF Chat](https://pdfnoted.com/ai-chat.html): AI PDF 对话——上传 PDF 直接提问，AI 基于文档原文回答。总结核心观点、查找关键信息、提取表格数据
- [How to Summarize PDF](https://pdfnoted.com/how-to-summarize-a-pdf.html): AI PDF 总结工具——上传合同/论文/报告，AI 生成结构化摘要

## Comparison Pages
- [VS Hub](https://pdfnoted.com/vs/index.html): Compare PDFnoted with competitors
- [PDFnoted vs Smallpdf](https://pdfnoted.com/vs/smallpdf.html): Feature comparison table
- [PDFnoted vs iLovePDF](https://pdfnoted.com/vs/ilovepdf.html): Feature comparison table
- [PDFnoted vs Adobe Acrobat](https://pdfnoted.com/vs/adobe-acrobat.html): Feature comparison table
- [PDFnoted vs LightPDF](https://pdfnoted.com/vs/lightpdf.html): Feature comparison table
- [All PDF Tools Compared](https://pdfnoted.com/vs/compare.html): Comprehensive comparison

## Use Scenarios
- [Scenarios Hub](https://pdfnoted.com/scenarios/index.html): PDF solutions by use case
- [Resume PDF](https://pdfnoted.com/scenarios/resume.html): Optimize resumes, convert formats
- [Thesis PDF](https://pdfnoted.com/scenarios/thesis.html): Academic paper formatting and annotation
- [Bid PDF](https://pdfnoted.com/scenarios/bid.html): Tender document preparation and compliance
- [Finance PDF](https://pdfnoted.com/scenarios/finance.html): Financial report processing and audit
- [Contract PDF](https://pdfnoted.com/scenarios/contract.html): Contract review and compliance check

## 业务方案与深度指南 (Business Solutions & Deep Guides)

面向法务、合规、财务、HR 与企业的深度实务指南与方案页，含真实法规引用、匿名业务场景与合规提示：

- [合同公章去除方法](https://pdfnoted.com/how-to-remove-stamp-from-contract.html): 区分去除扫描件冗余印章与签署效力留痕，附合规提示。
- [扫描件转可搜索 PDF](https://pdfnoted.com/scan-to-searchable-pdf.html): 浏览器内 OCR 识别文字并还原版式，输出可检索图层。
- [去水印工具对比 2026](https://pdfnoted.com/pdf-watermark-remover-comparison.html): 按水印类型、处理位置、输出质量与合规边界客观对比。
- [PDF 合规检查清单](https://pdfnoted.com/pdf-compliance-checklist.html): 脱敏、水印、留痕、对外分发与存档五类可落地动作。
- [对外发文件安全清理方案](https://pdfnoted.com/solutions/confidential-pdf-sharing/): 企业数据外发前的脱敏与水印管控。
- [扫描证据修复方案](https://pdfnoted.com/solutions/legal-evidence-pdf-repair/): 在不篡改内容前提下增强清晰度，保留原始文件。
- [盖章合同数字化方案](https://pdfnoted.com/solutions/scanned-contract-cleanup/): 扫描件去阴影、纠斜、OCR 为可检索电子档案。
- [HR 合同 AI 审查方案](https://pdfnoted.com/solutions/hr-contract-ai-review/): 识别试用期、工时、社保、竞业与解除等用工风险。
- [SaaS 合同 AI 审查方案](https://pdfnoted.com/solutions/saas-contract-ai-review/): 聚焦自动续费、数据权属、SLA 与终止权。
- [财报与披露文件脱敏方案](https://pdfnoted.com/solutions/financial-report-redaction/): 对外提供底稿前遮盖未公开信息并留痕。
- [竞业限制协议审查](https://pdfnoted.com/ai-contract-review/non-compete/): 聚焦竞业范围、期限、补偿与违约条款。
- [服务协议审查](https://pdfnoted.com/ai-contract-review/service-agreement/): 识别交付标准、验收、付款与责任限制条款。
- [终止/解除协议审查](https://pdfnoted.com/ai-contract-review/termination/): 聚焦通知期、结算、保密与竞业限制承接。

## Industry Solutions
- [Solutions Hub](https://pdfnoted.com/solutions/index.html): AI compliance solutions by industry
- Financial Compliance, Legal Tech, Medical/Pharma Compliance, plus 8 more verticals

## Content Center (68+ articles)
- [Guides Hub](https://pdfnoted.com/guides.html): 35 how-to articles with step-by-step instructions
- [Insights Hub](https://pdfnoted.com/insights.html): 33 industry insight articles on compliance trends
- [Research References](https://pdfnoted.com/research.html): Academic papers and ISO standards PDFnoted builds on — PDF processing, AI governance, cross-border data compliance, ESG reporting
- Key guides and business landing pages include HowTo / FAQPage / Article / BreadcrumbList JSON-LD for rich results.

## Browser Extensions
- [Chrome Extension](https://chromewebstore.google.com/detail/blhmpgkbnbpjpceoooabjpoihcenkcfp): Full PDF workspace in your browser toolbar
- [Edge Extension](https://microsoftedge.microsoft.com/addons/detail/keogdoonmbimplepmpjnfneakocaelpn): Same features, Edge-optimized
- Both extensions share membership with the web app. Process files entirely locally — no upload needed.

## Technical Stack & Architecture
- Frontend: Vanilla JS, PDF.js, Fabric.js, pdf-lib, fontkit
- AI: Qwen-flash (text), Qwen-OCR (scanned docs), via Aliyun MaaS
- Legal Engine: Multi-level retrieval — exact match, TF-IDF, citation expansion, validity rerank. Index: 22,179 chunks from legal_corpus (CN/EU/US laws)
- Hosting: Aliyun Singapore, Nginx + Node.js/Fastify, PM2
- Payments: Xorpay (CN/WeChat), PayPal (INTL), cross-region isolation
- Security: AES-256-GCM encryption, HTTPS, files auto-deleted within 1 hour

## Quick Links
- Sitemap: https://pdfnoted.com/sitemap.xml
- Sitemap Guides: https://pdfnoted.com/sitemap-guides.xml
- Sitemap Insights: https://pdfnoted.com/sitemap-insights.xml
- RSS Feed: https://pdfnoted.com/rss.xml
- Privacy Policy: https://pdfnoted.com/privacy-web.html
- Refund Policy: https://pdfnoted.com/refund-policy.html

## Contact & Support
- Website: https://pdfnoted.com
- Email: support@pdfnoted.com
- Twitter: https://twitter.com/pdfnoted
- GitHub: https://github.com/pdfnoted
- Product Hunt: https://www.producthunt.com/products/pdfnoted