Customize your PDF.js Viewer
Create a custom PDF.js Viewer for your application using our Javascript API
Beautiful by default
Our custom PDF.js viewer comes with a meticulously designed UI out of the box. If our design does not suit your needs, every single component can easily be customized
Open source
PDF.js Express's UI is completely open source. Dig in to the source code and make fine tune custom changes as you need.
Easy to use
Our customization APIs are extensive and easy to use. Easily change themes, add buttons, or customize the toolbar.
Try out the demo
See what you can do
Use Cases
Customize UI
Dark mode
Light mode
Hide Toolbar
Easy to integrate
Integrate a PDF.js viewer and annotator into any application with minimal effort. Use our extensive guides and samples to guide you along the way
Integrates into any framework
Seamlessly integrate a PDF.js viewer with annotations into React, Angular, Vue, or any other Javascript Framework
Customizable
Change the style of your PDF.js viewer and annotator to match your brand and fit seamlessly into your application
Community Support
Have a question or need help with your implementation? Get answers directly from the developers in our community based support forum
Get started today!
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