Windows has Edge built in, which is great for reading PDFs and nothing else. Acrobat costs £15 a month. The Microsoft Store has fifty 'free' PDF editors, half of which watermark output and the rest of which ask for a subscription before they'll let you save.
The browser does this. For free.
What Edge can and can't do
Microsoft Edge opens PDFs cleanly, lets you annotate (highlight, draw, add notes), fill form fields, and sign with mouse or pen. For a built-in PDF viewer it's the best on any OS. The bit it doesn't do: edit the actual text in a PDF.
Flint handles that. Runs in Edge, Chrome, Firefox — anything modern. Tap text, type, save.
The flow on Windows
Open your browser. Drag the PDF onto Flint's editor. Click text to edit it inline. Add text boxes for empty fields. Download — file goes to %USERPROFILE%\Downloads by default.
Same flow for signing, merging, splitting, compressing, converting to Word. One tool, one tab, browser-based.
When to use Edge for editing
Quick annotation, signature with a pen on a Surface, filling form fields — Edge does these well and doesn't require leaving the app the PDF opened in. Use Edge for those. Use Flint when Edge can't help (text edits, conversion, smarter compression, redaction).
Drag-and-drop from File Explorer
Drag any PDF straight from File Explorer onto a Flint browser tab. The file loads. Save the edited version back to your Downloads or any folder via the browser's save dialog. The full Windows ecosystem cooperates with the browser — no special setup.
FAQ
Will this work on Windows 10?
Yes. Flint runs in any modern browser on Windows 10 or 11. Edge, Chrome, Firefox, Brave — all fine. Older Windows (7, 8) work too if the browser is recent.
Is Adobe Acrobat worth it on Windows?
For occasional editing, no — £15/month adds up fast for editing two PDFs a month. For professional use (legal, accounting, batch redaction), it earns its keep. Most home users overpay.
Can I edit a PDF from a Windows tablet?
Yes. Surface Pro and other Windows tablets handle Flint with touch or pen input. Edge with a pen is excellent for signing; Flint covers the editing the touch UI of native apps often makes awkward.
Skip Acrobat. Edit your PDF in Edge or Chrome, free.