How to Merge and Split PDFs
Merging and splitting are the two most common PDF housekeeping tasks. The great news is that, done properly, both are lossless: unlike compression, they copy pages exactly, so your text stays selectable, your links keep working, and nothing gets blurry.
Merging: combining several PDFs into one
Merging stitches multiple PDF files together into a single document, in an order you choose. It's the right tool when you want to:
- Combine monthly invoices or reports into one file for archiving.
- Assemble chapters, appendices, or exhibits into a single deliverable.
- Bundle a cover letter, résumé, and references into one application PDF.
- Join scanned pages that came out as separate files.
How to merge, step by step
- Open the Merge tool and add two or more PDFs (you can add them in batches).
- Set the order. Drag the handle on each file up or down. Order matters — pages are combined top to bottom.
- Click Merge. The pages from every file are copied, in order, into one new PDF that downloads automatically.
Because a good merge tool copies pages rather than re-rendering them, text layers, hyperlinks, and form fields all survive intact.
Splitting: dividing one PDF into pieces
Splitting extracts specific pages or ranges from a PDF into separate files. Reach for it when you want to:
- Send only the relevant pages of a long contract to a client.
- Pull a single form, chapter, or receipt out of a larger document.
- Break a combined scan into individual documents.
- Separate every page so you can reorder or recombine them.
Understanding page ranges
Most split tools accept a compact range syntax. In CrunchyPDF, you type page numbers and ranges separated by commas. For example:
| You type | You get |
|---|---|
1-3, 5, 7-9 | Three files: pages 1–3, page 5 alone, pages 7–9 |
12-15 | One file containing pages 12 through 15 |
| "Every page separately" | One file per page |
How to split, step by step
- Open the Split tool and choose your PDF.
- Pick a mode: page ranges (type the ranges you want) or every page separately.
- Click Split. Each range downloads as its own PDF, named after the source and page numbers.
Merge and split are lossless
These operations copy pages without re-encoding them, so there is no quality loss and your searchable text is preserved — a key difference from compression, which converts pages to images.
A common combined workflow
The two tools pair naturally. A typical real-world job: split the pages you need out of several documents, then merge those pieces into one clean file in the order you want. For example, pull page 2 from one scan and pages 5–6 from another, then combine them into a single PDF to send.
Doing it privately
Merging and splitting often involve exactly the documents you'd least want to upload — contracts, financial statements, personal records. CrunchyPDF performs both operations entirely in your browser, so the files are never transmitted anywhere. You get the convenience of a web tool with none of the upload risk. (More on that distinction in client-side vs server-side processing.)