PDF markup and annotation Javascript library
Markup and annotate pdf files fast and easy with pdfgo.js. Choose color, draw shapes, measure and save to pdf.
Annotate pdf on the fly
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Smooth integration
No headaches. Integrate with your application with just a few lines of code.
Draw shapes and freehand
Choose color and draw lines, rectangles, circles, clouds and smooth freehand.

Add text
Choose color and add text on your pdf document.

Add markers
Add markers or custom icons on the pdf document.

Measure Area, Distance & Perimeter
Measure path, perimeters and area. Calibrate the ruler against the pdf.

Save to PDF
Save the pdf annotations back to pdf with the same margins, paper size etc. Super fast and 100% on the client side.

Simple pricing
Try it for free with our CDN and upgrade to Premium when you’re ready to go live.
Trial SDK
Get started in minutes and try all features for free. Fast access with our CDN hosting.
Free forever
- All features
- Easy setup
- Watermark
Premium
Includes perpetual license, all source code and docs.
$1,600 USD
- All features
- Open and save pdf
- Draw shapes
- Add text and markers
- Add markers
- Measure areas and perimiters