Welcome to PDF Splitter—your fast, simple way to break large PDFs into clean, organized files. In just a few steps, you can upload a document and split it by batches, bookmarks, sections, or table of contents, depending on how your file is structured. PDF Splitter is designed to save time, reduce manual page work, and keep outputs consistent for sharing, archiving, and downstream workflows. If you’re new, start with Getting Started, then follow the category tutorials to choose the split method that best matches your document.
PDF Splitter offers multiple splitting methods because documents are structured in different ways. Some files are evenly sized, some have built-in bookmarks, some need manual page-range control, and others require AI-assisted understanding of complex outlines. Choose the method that matches your document structure to get faster, cleaner, and more accurate results.
Best when you want equal file sizes or fixed chunks (for example every 10 or 25 pages). This method is simple, predictable, and useful for bulk distribution, print sets, or review packets where structure inside the PDF does not matter.
Best when your PDF already has bookmark navigation (chapters/sections). PDF Splitter uses those markers as boundaries, so output files align with the author’s original structure. Ideal for manuals, handbooks, and long reports.
Best when you need manual control over exact page ranges. You define where each output starts and ends, which is useful for custom workflows, legal packets, and cases where bookmarks are missing or unreliable.
Best for complex documents where structure must be interpreted. This method can use prompts and TOC logic to determine meaningful split points, making it ideal for dense technical docs, mixed formatting, or AI-assisted segmentation.
Description: Split by Batches divides a PDF into repeating page-count groups (for example every 10 pages). It is best for uniform outputs where each file should contain a consistent number of pages, regardless of document headings or bookmark structure.
Learn how to divide your PDF into equal-sized batches for consistent output files and easy distribution.
Description: Split by Bookmarks reads the PDF's existing bookmark tree and uses those entries as split boundaries. This method is ideal for chapter-based files like manuals and reports, where bookmarks already define the logical document sections.
Automatically split your PDF using existing bookmarks—perfect for manuals, reports, and documents with chapters.
Description: Split by Sections lets you define custom page ranges manually for each output file. Use it when you need direct control over start and end pages, especially when bookmarks are missing or when section boundaries are workflow-specific.
Define custom page ranges and organize your PDF into logical sections with full control over the output.
Description: Split by Table of Contents uses extracted or generated TOC structure to determine split points across complex documents. It is useful when structure must be inferred from content and headings instead of relying only on fixed page counts or existing bookmarks.
Use AI-powered custom prompts to intelligently split complex documents based on their structure.
Use Pages to Skip when you need to ignore specific pages before splitting, such as blank separators, cover sheets, or index pages. This keeps outputs clean and prevents extra pages from affecting split boundaries. The first input box will correlate to the start page of the section ranges you are splitting by, and the second input box will correlate to the end page. For example, if you are splitting by Bookmarks and have a section that runs from page 3 to page 10, an input of "1" in the first box and "2" in the second box would remove page 3 from the first input. add pages 11 and 12 from the second input, so the split would start at page 4 instead and end at page 12. You can add as many skip page offsets as needed, and preview how they affect output structure in the Editor tab before final export.
Pages 3 - 6
The specific page ranges are first generated by the automated method you choose (Bookmarks, Table of Contents, Section Divider, or Batches), not by manual Skip Page input. Skip Page then acts as a modification layer: you supply pages (single numbers or ranges) to remove from the source, and those removals are applied when you click Separate Files. At that point, the split is finalized using the adjusted page set. You can preview how this affects output structure in the Editor tab before final export.
Remove cover pages, inserts, blank pages, duplicate separators, or any pages you never want in outputs. In many files, these extra pages do not line up cleanly with bookmark boundaries or table-of-contents entries, which can shift split points and create mismatched outputs. Skip Page is here to correct that by removing those pages before splitting so your final files align more accurately with the structure you actually want.
Preview results on a small test file.
Decide whether to extract bookmarks/TOC before or after skipping based on the structure you want.
Prefer explicit ranges over many single entries for clarity.
DPI controls render quality for image-heavy processing. Higher DPI improves text/image clarity and OCR quality, while lower DPI is faster and uses less memory. The right value depends on what you are trying to separate: if pages inside each section are already very similar, use lower DPI because it is faster and you do not need extreme visual precision. If cover pages or divider pages are highly detailed, use higher DPI so the renderer captures subtle differences (logos, thin lines, textured backgrounds, and small typography) that help distinguish one section from another.
This simulates one square inch. As DPI increases, more dots are rendered in the same physical area.
Lower DPI values are often better when adjacent pages in each section look very similar and the split boundaries are already obvious. You get faster processing, lower memory use, and quicker iteration with little loss in practical accuracy for those files.
Higher DPI values are better when you need to separate highly detailed pages (covers, artwork-heavy dividers, scanned pages, or dense text). Extra pixel detail helps preserve subtle differences that can be important for OCR confidence and similarity-based comparisons.
Start low, validate results, then raise DPI only where needed. For section pages that are mostly uniform, keep DPI lower for speed. For quality-critical boundaries, increase DPI selectively. In short: higher is not always better—best DPI is context-dependent and should match the level of visual detail required by your workflow.
Extractor Settings control how PDF Splitter reads your Table of Contents text before building section entries. PDF files can be created in very different ways depending on the software, export settings, scan quality, fonts, and internal text layering. Because of that, two PDFs that look almost identical on screen can behave very differently during extraction.
If one extractor is not giving the result you want, switch to the other extractor and try again. This often fixes the issue. Sometimes Extractor 1 works better than Extractor 2, and sometimes Extractor 2 works better than Extractor 1. There is no single extractor that is best for every PDF.
Typical output style: fast plain-text reading, sometimes flatter structure.
1. Getting Started ........ 1
1.1 What PDF Splitter Does ........ 1
2. Account & Plans ........ 4
2.1 Sign In / Create Account ........ 4
2.2 Plans & Feature Overview ........ 4
Typical output style: better preserved section nesting and heading depth.
1. Getting Started 1(bolded, larger font)
1.1 What PDF Splitter Does 1
2. Account & Plans 4(bolded, larger font)
2.1 Sign In / Create Account 4
2.2 Plans & Feature Overview 4
If the extracted results look wrong, missing, or oddly grouped, switch extractor first before changing other settings.
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