PDF

How to split a PDF into custom page groups

QUICK ANSWER

Choose your PDF and look at the source preview. Use the page numbers shown by the tool, which start at 1. Choose Create result, then download the individual parts or the ZIP.

Tooldu Split PDF by Pages page showing its upload area and starting controlsView full size
Start on the Split PDF by Pages page. The Choose files button opens your device’s file picker.

Sometimes a document needs three small sections rather than one file per page. Split PDF by Pages is a direct way to name those groups with page ranges or divide the document at regular intervals.

1. Open your file

Choose your PDF and look at the source preview. Use the page numbers shown by the tool, which start at 1.

2. Work through the settings

  1. Choose custom groups when the parts have different lengths. Enter groups such as 1-3;4-6, following the example beside the field.
  2. For evenly sized parts, choose the interval option and enter the number of pages per output file.
  3. Check whether you intentionally repeated a page in more than one group. Overlapping groups are allowed.
  4. Choose Create result, then download the individual parts or the ZIP.
Split PDF by Pages on Tooldu with the sample file opened and its working controls visibleView full size
The Split PDF by Pages workspace with a sample file. Review these controls before making your download. Sample portrait, where shown: NASA, public domain; no endorsement implied.

3. Check before you share

  • Open the start and end of each part.
  • Check that the final page of the source was included if you need it.
  • Give the downloaded parts useful names before sending them.

File limits and first-use notes

The file budget is 350 MB, with up to 150 pages per source PDF. Up to 150 source pages. Page groups can overlap; their entered order is retained.

Questions you may have

Can one page appear in two files?

Yes. You can include it in more than one custom group, for example when every section needs the same cover page.

What if the parts should all have the same length?

Use equal-size page intervals instead of typing each group separately. The last part may contain fewer pages.