Get past a per-upload size limit
Cut a large file into several parts, upload them one at a time, then merge them in the README's order.
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Guide
File Splitter uses Blob.slice() to create references into the original file rather than copying all the data first. You can split by a fixed number of parts or by megabytes per part; it then computes the MD5 of the original file and of every part, and generates a README holding the merge commands and the checksum list.
Updated 2026-09-272 min read
A 100 MB file split at 25 MB per part produces about 4 .partN files; the README gives merge examples for both Windows copy /b and macOS/Linux cat.
Cut a large file into several parts, upload them one at a time, then merge them in the README's order.
Get an MD5 for each part as well, so every piece can be verified after transfer.
Pack every slice and the README into a ZIP and take them in one go instead of clicking each one.
No. Splitting preserves the original bytes, and the ZIP download also uses STORE without compression.
The original file, the parts and the checksums are all handled locally in the browser and are never uploaded.
Updated 2026-09-27
Split by number of parts or part size into .part volumes, with rejoin instructions and an MD5 list
Parts are named originalname.part1 / .part2 …, with a README (how to merge + MD5 checksum list)