split vs merge pdf

Choose Split PDF when you only need selected pages from one source file — one annex, one invoice, one chapter, or one signed page buried inside a longer document. Split is the cleanup step for an oversized or over-inclusive document: upload it once, enter the page range or single page you need, and download a smaller file containing only that part.

Choose Merge PDF when you already have multiple separate files and need to combine them into a single final packet — several signed forms, a set of scanned pages, or several reports that need to travel together as one document. Merge is the assembly step: upload each file in the order you want them to appear, and download one combined PDF.

In practice, these two tools are often used back to back rather than in isolation: split a large source document down to just the pages you need, then merge those extracted pages together with other files to build a new final document — for example, pulling your signature page out of one contract and merging it with a separate cover letter and ID scan for a single submission.

If you're not sure which you need, ask whether you're starting from one file that's too big (use Split) or several files that need to become one (use Merge). Both tools run entirely in your browser with no signup either way.