Tool bench
File Kit
ZIP, checksums, file types and size conversion.
Available now
File size converter
Convert bytes, KB, MB, GB, TB and PB in decimal (1000) or binary (1024). See why a 1 TB drive shows 931 GiB.
Available
Create ZIP
Pack files into one ZIP on your device, with a choice of compression level. Nothing is uploaded.
Available
Extract ZIP
Open a ZIP safely: see what is inside and download the files. Refuses zip bombs and unsafe paths.
Available
File checksum
SHA-256, SHA-1, SHA-384, SHA-512 and CRC-32 of your files, with a box to check them against the published hash.
Available
File type detector
Find a file's real type from its first bytes, and spot files whose name says one thing and contents another.
Available
MIME type inspector
Compare the type your browser reports, the type the bytes show and the type the extension suggests, with plain explanations.
Available