PDFescape
pdfescape.com
The 2007 browser PDF editor that still fills awkward government forms
Free tierClassic
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xodo.com
Reads and annotates a PDF properly, then merges or converts it.
Xodo is a PDF reader first — smooth scrolling, night mode, highlights, sticky notes and form filling — with a set of conversion and merge tools alongside. It is the closest a free web app comes to feeling like a desktop reader, which matters if you actually read long documents rather than just process them. It comes from Apryse, the company behind the PDFTron SDK.
AltFTool does this too
If you would rather not leave the site, PDF Annotation Tool covers the same job here — free, no account, and it runs in your browser.
Open PDF Annotation ToolQuestions
A genuinely usable free tier with paid plans for volume or team features. Reading and annotating are free; converting and merging repeatedly runs into a Pro upgrade prompt.
Yes. Xodo sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
Reading and annotating are free; converting and merging repeatedly runs into a Pro upgrade prompt.
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