Analyze PDFs Instantly from Your Browser
The free PDFCheck Chrome extension lets you check PDF metadata, detect AI-generated content, and validate files — without leaving the page you are on.
Drop a PDF here or browse
Free: up to 50 MB per PDF. Pro and AI: up to 100 MB per PDF.
Everything You Need, One Click Away
Powerful PDF analysis tools integrated directly into your browser workflow.
Metadata Analysis
View title, author, creator, producer, creation date, modification date, PDF version, and page count — all in seconds.
AI Content Detection
Instantly detect if a PDF was generated by AI tools like ChatGPT, Claude, or automated document generators.
Verification Checks
Quick pass/fail checks on PDF integrity, structure, and metadata completeness — at a glance.
Drag & Drop
Simply drag a PDF file onto the extension popup or use the file picker. No copying, no uploads to random sites.
Free to Use
Get 10 free checks per day without an account. Register for a free account to unlock 100 checks per day.
Privacy First
Your PDFs are sent to PDFCheck over HTTPS. The original checker upload is not retained after the request; extracted metadata and result records follow our Privacy Policy.
How It Works
Install the Extension
Download and install the PDFCheck extension from the Chrome Web Store, or load it manually in developer mode.
Drop a PDF
Click the PDFCheck icon in your toolbar, then drag and drop a PDF file or use the file picker to select one.
Get Results
View metadata, AI detection results, and verification checks instantly. Click "View full report" for the complete analysis.
Installation Guide
Get started in under a minute. Available for Chrome, Edge, Brave, and other Chromium browsers.
Download the extension
Download the extension files from our GitHub repository, or use the direct download link below.
Open Chrome Extensions
Navigate to the extensions page and enable Developer mode.
Load the extension
Click "Load unpacked" and select the chrome-extension folder you downloaded. The PDFCheck icon will appear in your browser toolbar.
Configure your API token (optional)
Click the gear icon in the extension popup to open settings. Paste your API token for 100 checks/day instead of 10. You can get a free token from your account page.
Free & Generous Limits
Start analyzing PDFs immediately — no credit card required.
- Full metadata analysis
- AI detection included
- No registration required
- Everything in free tier
- 5x more daily checks
- Analysis history & sharing
Frequently Asked Questions
Yes, completely free. You get 10 PDF analyses per day without an account. Register for a free account to get 50 analyses per day.
No. The extension only activates when you click its icon and upload a PDF. It does not track your browsing, read your tabs, or collect any data in the background.
The PDF is sent to the PDFCheck API over HTTPS. The original checker upload is not retained after the request, while extracted metadata and result records follow our Privacy Policy.
Yes! The extension works on any Chromium-based browser, including Google Chrome, Microsoft Edge, Brave, Vivaldi, and Opera.
Free: up to 50 MB per PDF. Pro and AI: up to 100 MB per PDF.
Create a free account at pdfcheck.online, then go to your account settings to generate an API token. Paste it in the extension settings.
Ready to Analyze PDFs Faster?
Install the PDFCheck Chrome extension and start checking PDF metadata, detecting AI content, and validating files — all from your browser toolbar.