Split a PDF file
Split one PDF into parts by ranges using the same local uk-pdf operation.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Split result
One line of base64 per output document, in segment order.
Loading the PDF module…
Paste the PDF base64 to start splitting
Parts: 0 · Source pages: 0 · Output bytes: 0
What this tool does
- Break a long document into chapter-sized files.
- Send only the pages someone needs.
- Split first, then edit each part separately.
Example
Input
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
Output
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
Page numbers are 1-based; every segment produces its own PDF and the output joins their base64 with newlines.
Frequently asked questions
How do I write page ranges?
Use 1-3 for a range and 3 for a single page; each comma-separated segment becomes one PDF, and semicolons or newlines also separate segments.
What about out-of-range pages?
It fails with invalid-input instead of emitting an empty document; 9-20 on a six-page file is rejected.
Is the content re-compressed?
No. Only the page tree and object table are rebuilt; content streams are copied as they are.
Can encrypted PDFs be split?
No. Encryption is detected and reported as encrypted; decrypt the file first.
Keywords：pdf拆分区间pdf_chaifenswasm离线