Split a PDF into pages or parts
Split a PDF into separate files by page range, every few pages, chapter or file size. Or pull out just the pages you pick. It runs in your browser, so the PDF stays on your device.
- Free, no sign-up
- Runs in your browser. Your files never leave your device.
- Updated
or paste a file with Ctrl V
Drag pages to reorder. Click to select, Shift-click for a range. Press ? for shortcuts.
Kortex Split PDF splits a PDF into separate files in your browser. Split by page range, every N pages, chapter bookmarks or file size, or extract the pages you select. Nothing is uploaded, and there is no file limit. Each new file keeps its bookmarks and the original’s password.
How do I split a PDF?
- Drop the PDF on the box above, or choose it. Every page shows up in a grid.
- Pick how to split it. Dashed lines in the grid show where each new file starts, and the list beside it names every file.
- Tidy up first if you like: drag pages into a new order, turn sideways scans upright, delete blank pages.
- Click Split. One file downloads as a PDF. Several files arrive together in a .zip.
Which way should I split?
| Split by | Good for |
|---|---|
| Ranges | Known sections: 1-4, 5-12, 13- makes three files. |
| Every N pages | Single pages (N = 1), or equal chunks such as weekly handouts. |
| Selected pages | Pulling out a few pages: a signature page, an appendix, a figure. |
| File size | Email attachments, upload limits, and Gemini Notebook’s 200 MB and 500,000-word limits. |
| Chapters | Books, theses and reports that have bookmarks. |
What does each new file keep?
Pages are copied with pdf.js, the engine inside Firefox. Each file keeps the bookmarks that point into its pages, links between those pages, form fields and accessibility tags. Pages you turned stay turned. A protected PDF stays protected, and each part opens with the original’s password. Digital signatures do not carry over, because each part is a new document.
How exact is splitting by file size?
Before it saves anything, the tool weighs each page: its text, its images and the fonts it uses. A font or logo shared by many pages counts once per file, as it does in the real output. Pages then go into files in order. A file closes before the next page would push it over the limit. The estimate runs high, so files normally come out under the limit. A single page larger than the limit gets a file of its own. If a file still comes out over the limit, the result says which one. This can happen when a PDF has large attachments, because each part gets a copy of them.
How does this compare with iLovePDF and PDF24?
iLovePDF’s free plan splits files up to 100 MB per task and keeps splitting by size for Premium. PDF24’s split tool is free and unlimited. Its page says it splits files in the cloud on its servers in Germany and deletes them after an hour (both as of 4 Nov 2026). Here, splitting by size and by chapter is free, and the PDF stays on your device.
Sources, checked 4 Nov 2026: iLovePDF pricing, iLovePDF Split, PDF24 Split.
Splitting a long PDF for Gemini Notebook
Gemini Notebook (formerly NotebookLM) takes up to 500,000 words or 200 MB per source, says Google’s help page (checked 4 Nov 2026). Under File size, Use Gemini Notebook’s limits sets both. The tool counts every page’s words so no part goes over. Or split by Chapters. Then each source is named after its chapter, which is easier to find in a long notebook.
Need the opposite? Merge PDF combines files, and PDF to Text gets the words out as text or Markdown.
Questions
Is my PDF uploaded when I split it?
No. pdf.js and pdf-lib split the PDF in your browser tab, and the new files are made on your device. Nothing about the document is sent to Kortex or anyone else.
How do I split a PDF into single pages?
Drop the PDF and set Every N pages to 1 (the Every page button). Click Split. You get one PDF per page in a .zip. Each file name has the page number, so they sort in order.
How do I pull out just a few pages?
Choose Selected pages, then click the pages you want in the grid. Shift-click selects a run of pages. Save them as one PDF or one PDF each. Or choose Ranges, type something like 2-5, 9 and tick Put all the ranges in one PDF.
Can I split a PDF by file size?
Yes, for free. Choose File size and set the largest file you want. The tool measures what each page carries: its text, fonts and images. A font shared by many pages counts once per file. It groups pages to stay under your limit. It tells you if one page is bigger than the limit on its own.
Can I split a PDF by chapters?
If the PDF has bookmarks, choose Chapters. Each top-level bookmark starts a new file, named after the chapter. Each file keeps the bookmarks for its own pages. Pages before the first chapter become their own file.
How do I split a big PDF for Gemini Notebook (NotebookLM)?
Choose File size and click Use Gemini Notebook’s limits. That sets 200 MB and 500,000 words per file. Google gives these limits for each source. The tool counts the words on every page to keep each file under both.
Can I split a password-protected PDF?
Yes. A PDF that needs a password shows a password box in the file list. Type it and the pages appear. The new files keep the original’s protection, so they open with the same password. The password stays in your browser.
Can I split several PDFs at once?
Yes. Drop them all. Each one is split the same way (every 10 pages, say, or by chapter). All the files come in one .zip.
More free tools
- Extract PDF pages Click the pages you need and save them as a new PDF.
- Merge PDF Join PDFs into one file. Reorder and rotate pages in your browser.
- PDF to Text Get clean text or Markdown out of any PDF, page by page.
- Image to Text (OCR) Copy the text from photos, scans and screenshots. 100+ languages.
- Background Remover Remove the background from any photo. The AI runs on your device.
Save what you find in one click.
Kortex is a Chrome extension for Gemini Notebook (formerly NotebookLM). It sends AI chats, web pages, posts and YouTube videos into the notebook you pick. It keeps your notebooks organized. It exports them back out.
No card needed.