247999.XYZ Tools / Share / File splitter and joiner Color theme Sign in Create account

File splitter and joiner

Split a local file into smaller parts with a SHA-256 manifest, or verify and join a complete part set in your browser.

Split a file into smaller plaintext parts, or join a complete set using its manifest. Splitting does not encrypt or hide the contents. Maximum file size: 64 MiB; maximum parts: 64.

Operation

For splitting File to split Maximum part size

For joining Split manifest JSON All part files

Keep the manifest with every part

Splitting creates numbered part files and a JSON manifest with their names, exact sizes, order and SHA-256 hashes. Each set uses a fresh identifier in its part filenames. Download the manifest and all parts, retaining their filenames.

For joining, select the manifest and the full set of parts. The browser orders parts from the manifest and checks each size and hash. Missing, duplicate, mixed or changed parts stop the operation. The whole-file hash must also match before a joined download becomes available.

Parts are plaintext slices, not encrypted shares. Someone with a part can read whatever content it contains. Hashes detect changes relative to the chosen manifest but cannot authenticate a sender who supplied both files and manifest. Files are processed locally with a 64 MiB limit.