File Hash and Info Report
100% PrivateFile & Data ConversionFingerprint any file with its size, type, dates and cryptographic hashes.
Runs entirely in your browser. Your input is not uploaded to Ovatly or anywhere else.
- 1Choose any file with the file box; nothing is uploaded.
- 2Wait for the progress bar while the file is read in slices and the fingerprints are computed.
- 3Read the report: name, size, type, extension, modified date and both checksums.
- 4Copy the MD5 or SHA-256 with the buttons when you need to compare or share them.
A text file containing exactly the three characters abc (no newline) reports size 3 bytes, MD5 900150983cd24fb0d6963f7d28e17f72 and SHA-256 ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad. These are the published test vectors for those algorithms, so you can use them to confirm the tool is working before trusting it with a real file.
- MD5 is read in 4 MB slices with a progress bar; SHA-256 reads the file as one block, so very large files (hundreds of megabytes) can take a while and use noticeable memory.
- MD5 is an identification checksum, not a security proof: collisions are practical, so a matching MD5 shows consistency with a published value but cannot prove a file is safe. SHA-256 is the stronger fingerprint.
- The type shown is the type the browser reports for the file, which usually comes from its extension, not from inspecting its contents.
No. Your browser reads the file locally and does the maths on this device. Nothing leaves your machine.
About this tool
The File Hash and Info Report fingerprints any file you choose: its size, type, last-modified date, MD5 and SHA-256 checksums, and a text preview when the file is readable text. Use it to confirm a download matches the checksum a publisher lists, or to identify a file before sharing it.
Related tools
Part of Ovatly's free tools in File & Data Conversion.