How to Split a PDF

Splitting a PDF breaks one document into several smaller files. IXPDF gives you two modes: split every N pages into uniform chunks, or split by custom ranges where you define exactly which pages go into each output file. All processing happens locally in your browser, so your file never leaves your device.

Steps

1. Open the Split PDF tool at/tools/split-pdf/.
2. Select your PDF. Drag the file onto the dropzone or click to browse. The selected file name and size appear below.
3. Choose a split mode. Under Split mode pick one:
   • Every N pages — enter a Pages per file number. A 12-page PDF with N=3 produces four 3-page files.
   • Custom ranges — type ranges like 1-3,4-6. Each range becomes one output file. A hint line tells you how many files will be created.
4. Run split. Click Run Split PDF. The worker produces the output files locally and reports progress.
5. Download. The result area lists every output file with its name and size. Click Download all N files to get them all, or use the per-file Download button to grab just one.

Tips

• Use Every N pages when you want uniform chunks, for example splitting a long scan into manageable attachments.
• Use Custom ranges when you know the logical boundaries, like separating a report into cover, body, and appendix.
• The hint under the ranges input updates live to show how many output files your ranges will create — use it to sanity-check before running.

Common mistakes

• Ranges that do not cover all pages. If you want every page in the output, make sure your ranges add up to the full page count. Any page not listed is simply left out.
• Pages per file of 0. The input is clamped to a minimum of 1; set a sensible chunk size before running.
• Expecting bookmarks to be preserved. Outline bookmarks are not carried into the split parts. If you need navigation, re-add it in your source application.