Does Hex Viewer upload my files to a server?

No. Hex Viewer runs entirely in your browser using on-device processing, your files never leave your device.

Hex Viewer

View the raw bytes of any file as a hex and ASCII dump.

Runs in your browser

See it in action

Your inputReady to use

Drop any file to view its bytes in hex

File Type Detector

Detect a file's true type from its byte signature, not just its extension.

File to Base64 Converter

Encode any file as Base64, or decode Base64 back into a downloadable file.

Zip & Unzip Files

Combine files into a ZIP archive, or extract files from one.

File Size Converter

Convert between bytes, KB, MB, GB, and their binary (KiB/MiB/GiB) equivalents.