The release of Firefox 104 in August gave users the ability to annotate PDFs, e.g., sign PDFs directly in the browser and save them. Here’s how:
- Open a PDF in Firefox, i.e., drag it into the Firefox Window, or right click on the file and select ‘Open with’ and choose Firefox.
- In the top right corner of the PDF window click on the ‘Add Free Text Annotation’ icon (a ‘T’ symbol).
- Click on the page and start writing. You can change the text colour and size.
- Also, top right (a pen symbol), click on the ‘Add Link Annotation’ icon to use a virtual pen to annotate or sign a document freehand. The colour and line thickness can be adjusted.
- To save an annotated PDF, click on the ‘Download’ button in the toolbar.
- To disable annotation editing, click on the arrow symbol (top right).
If Firefox browser doesn’t yet have the annotation options:
- Type about:config in the address bar, press Enter, click on ‘Accept the risk’ and ‘Continue.’
- Look for the preference pdfjs.annotationEditorMode, click the button next to it, and change the value to 0 (zero).
- Click the tick box to confirm and restart Firefox.
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