File Tools

A list of our File tools. Nothing you enter is sent to a server; it is all processed in your browser.

• File Hash Calculator

  Drag and drop files to calculate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes, and compare them with a published checksum.

• ZIP Maker & Extractor

  Bundle files into a ZIP, or open a ZIP, browse its contents and save only the files you need. Works with non-English file names.

• File Type Detector

  Identify a file’s real format from its magic number, warn when the extension does not match, and view a hex dump

• Duplicate File Finder

  Find duplicate files by SHA-256 hash from multiple files or a folder, see the wasted space per group, and copy or export the results as CSV.

• File Splitter & Joiner

  Split a large file into .001, .002 parts of any size to fit email limits, then join them back into the original.

• Bulk File Renamer

  Rename many files with numbering, find and replace, and case changes, then save them as a ZIP

• Hex Viewer

  View any file as hex and ASCII, jump to an offset, and search for hex or text bytes, even in large files