Mozilla has updated PDF.js, Firefox built-in PDF Viewer interface to align with Photon design which Mozilla follows for Firefox UI. The PDF Viewer has also received Form filling support for PDFs.
You may not believe this: PDF.js, JavaScript based PDF Viewer in Firefox still uses Australis interface and comes with dark design. Mozilla has finally updated it to match with Photon UI in Firefox 81 Nightly.
Here is how the current PDF Viewer looks by the way in Firefox and check the new interface which PDF.js has received in Firefox 81 below.


If you compare both, you can notice PDF Viewer’s theme has changed from dark to white and looks quite modern with some new icons on toolbar.
After Edge legacy, Firefox contains new PDF features where Google is still working to add them to Chrome PDF Viewer. For instance, two-page View is still not available by default, where Firefox offers same with “odd Spreads” and “Even spreads” options.
While Chrome supports editing and saving PDF forms in Canary, Mozilla has enabled support for form filling in PDF.js Firefox beta and Nightly versions.
You shouldn’t forget the recent improvements Mozilla made to PDF.js, you can now set Firefox as default PDF Reader on Windows 10 and Firefox allows to open downloaded PDF files with System Viewer such as Microsoft Edge in App mode.
Have you ever used Firefox PDF Viewer? What’s your opinion on the PDF.js’ new interface and form filling support for PDFs? Let us know in the comments below.
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