Split PDF by Size
Split a large PDF into parts under a size limit you set — for email attachments and upload caps. Size estimation runs in-browser.
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Select a file
or drag and drop them here — files never leave your device
✓ No upload✓ No watermark✓ No sign-up
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1UploadSelect or drop your PDF files
2ArrangeDrag rows into the order you want
3DownloadOne merged PDF, full quality, no watermark
Split to a maximum file size
Set a size cap like 5 MB and get as many parts as needed, each under the limit — ready for email attachments and upload forms. Page order is preserved across parts.
Local split, no upload
Size measuring and splitting run entirely in your browser. Your documents are never uploaded to any server.
Frequently asked questions
How accurate is the size limit?
Parts are built page by page and stop just before exceeding your limit, so every part fits.
Can I set the limit in MB?
Yes — pick a preset (5/10/25 MB) or enter a custom value.