PDF Split by Size
Split a PDF into multiple files, each under a target file size. Free, private, runs entirely in your browser.
Click to select a PDF file, or drag and drop
Your file never leaves your browserEach downloaded file will be approximately this size or smaller.
How to Split a PDF by File Size
- Upload the PDF you want to split.
- Enter the maximum file size (in MB) for each part.
- Click Split by Size — the tool divides the document into parts that each fit within the target size and downloads them as separate files.
Example
A 12 MB PDF split with a 2 MB target produces roughly 6 smaller files. Each file contains a consecutive chunk of pages and is estimated to be under 2 MB when saved. This is especially useful when an email or upload service has a strict file-size limit.
Common Use Cases
- Breaking a large PDF into parts that fit under an email attachment size limit.
- Splitting a heavy document for upload to platforms with file-size caps.
- Dividing a long report into smaller, more manageable chunks for sharing.
FAQ
- Why isn't every part exactly the target size? The tool divides pages into roughly equal chunks based on the total file size. The actual size of each part depends on the content of those specific pages, so some variation is expected.
- Can I split into single-page files? Yes — set the target size very low (e.g. 0.01 MB). Each page will become its own file.
- Is my file uploaded anywhere? No — splitting happens entirely in your browser.