File Tools
Calculate checksums, bulk rename files, create and open ZIP archives and detect file types.
File Checksum Calculator
Calculate SHA-1, SHA-256, SHA-384 and SHA-512 checksums of files and compare with the expected hash.
Open toolBulk File Renamer
Rename many files at once with prefix, suffix, find & replace, numbering and case options.
Open toolZIP File Creator
Create a ZIP archive from files and folders, with optional compression, right in your browser.
Open toolZIP Viewer and Extractor
Open a ZIP in your browser, browse its contents and extract selected or all files.
Open toolFile Type Detector
Identify a file's real type from its magic bytes and see whether the extension matches.
Open toolFile operations in your browser
Verify that a downloaded program is intact with a SHA-256 checksum, rename hundreds of photos in one go or bundle many files into a ZIP archive.
Open ZIPs and detect file types
The ZIP viewer lets you browse an archive and take only the files you need without extracting everything. The file type detector reveals the real format of files with a wrong or missing extension from their magic bytes.
No uploads
Every file tool runs on your device, so even large files are never sent to a server.