Split a large PDF into smaller files
A 200-page manual or a combined set of scans can be too big to email or upload in one go. Instead of lowering quality, you can split the document into several smaller PDFs that each fit the limit.
Split PDF separates the document into parts while keeping every page exactly as it was. It runs in your browser, so the document stays on your device.
Before splitting, check the exact limit you are working with. Email services commonly reject attachments above about 20 to 25 MB, while many upload forms stop at 10 MB or less. Knowing the target lets you choose sensible split points. Also tell the recipient how many parts to expect and number them clearly, for example report-part-1-of-3.pdf, so nothing is missed when the document is reassembled.
Step by step
- Open Split PDF and add your document.
- Choose how to split it using the options shown on the tool.
- Run the split and download the parts, individually or as a ZIP.
- Check the first and last page of each part so nothing is missing between them.
Tips
- Split by chapter or section when possible so each part makes sense on its own.
- If only a few pages are needed, Extract PDF pages is quicker than splitting everything.
- Split first, then compress each part if a file is still slightly too big.
Questions
- Does splitting lower the quality?
- No. Pages are copied into new files unchanged.
- Can I put the parts back together later?
- Yes. Merge PDF joins them again in any order you choose.
- Is the document uploaded?
- No. Splitting happens in your browser.