Files & organization · ONLINE TOOL

Split & join a large file

Prepare chunks with a preflight and manifest, then verify their sequence before rebuilding the file.

Local processingNo account required

USE CASES

When to use Split & join a large file?

Split a large file with a part preflight, then rebuild the original after checking sequence, sizes and, with an enhanced manifest, SHA-256 hashes.

CONCRETE EXAMPLE

BEFORE

120 MB rejected by a 25 MB channel

→

AFTER

5 .part001… chunks + optional manifest → complete preflight → rebuilt original file

PRIVACY

Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.

GOOD TO KNOW

Splitting does not reduce the total size and every chunk is required to rebuild the original.
Without a SHA-256 manifest, the preflight checks sequence and sizes but cannot prove the content integrity of each chunk.
SHA-256 calculation rereads every chunk and can be expensive for very large volumes.
The rebuilt file remains subject to browser download and memory limits.

HOW IT WORKS

PRIVACY

Are my files uploaded to WorkToolset?

No. This tool runs locally in your browser.

Is my original file modified?

No. WorkToolset creates a new copy or export.

Do I need an account?

No for this free tool. Accounts are mainly used for favorites, presets and future workflows.