Merge PDF
Combine several PDF files into one, in the order you choose.
Make form fields and comments a permanent part of the pages, so they can’t be changed.
Flatten PDF turns form fields and comments (highlights, notes, stamps, drawings) into a permanent part of the page. The document looks the same in every viewer and printer, and the answers can’t be changed afterwards.
Each item is drawn onto its page exactly as it appears, then removed as an editable object. Links keep working. The result is checked so that no form fields or comments are left behind.
Your PDFs are processed by your own browser (using the open-source pdf-lib and PDF.js libraries), so they’re never uploaded to us or anyone else, and nothing is kept after you close the page. Trying the tool is free; each download uses 1 export (one PDF or one ZIP), and downloading the same result again within 24 hours is free. See pricing.
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Need to lock a filled-in form?
Flatten a PDFUsing it and previewing the result are free. Downloading, copying or saving the final result uses 1 export: from £1.00 for 5, or included in a monthly plan. The same result again within 24 hours is free.
So filled-in forms and comments can’t be changed, and so they show the same in every viewer and printer. It’s often asked for before submitting or archiving a document.
Form fields can no longer be filled in and comments can no longer be opened, moved or deleted. Links keep working.
No. It works entirely in your browser, so your text and files stay on your device.
Yes. It works in any modern browser on phones, tablets and computers, with nothing to install.
Combine several PDF files into one, in the order you choose.
Split a PDF by page ranges, into single pages or every few pages, or extract the pages you need.
Reorder, rotate, delete, duplicate and extract PDF pages, or add pages from another PDF.
Turn PDF pages into JPG, PNG or WebP images at up to 300 DPI.