Edit, merge, split and fix PDFs
Reshaping documents: merge multiple files, split out the pages you need, add page numbers, flatten forms, and recover files that will not open. Practical how-tos for the editing jobs that come up most.
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Guides & tutorials
- October 9, 2026
Merge PDF Files — The Complete Guide (2026)
Combine multiple PDFs into one document in a few clicks. Learn the right order, how to mix scans and native PDFs, and how to avoid bloated files.
- October 27, 2026
How to Split a PDF and Extract Just the Pages You Need
Break a large PDF into separate files, or pull out a handful of pages, without paying for desktop software.
- October 28, 2026
How to Add Page Numbers to a PDF (Without Acrobat)
Number a PDF in a browser, choose where the numbers sit, skip the cover page, and keep the numbering correct when you print double-sided.
- October 28, 2026
What Does Flattening a PDF Mean? (And When You Actually Need It)
Flattening makes form fields and annotations permanent parts of the page. Here is what it fixes, what it breaks, and how it differs from compressing or rasterising.
- October 28, 2026
How to Repair a Corrupted PDF (and What to Do When It Won't Open)
A damaged PDF usually fails in one of five predictable ways. Here is how to identify the fault, repair the file online, and what to do when repair is not enough.