Hex file viewer
Inspect a window of raw file bytes with hexadecimal values, absolute offsets and a readable ASCII column.
Accepted files: see this tool’s format requirements. Choose one file. Up to 256 MiB in total.
One file up to 256 MiB. View 16–4,096 bytes at a time. Search for 1–64 hexadecimal bytes from the chosen offset. Non-printable bytes appear as dots in the ASCII column; this is not a text-decoding or editing tool. Up to 1,000,000 characters. Review the settings before running.
Your result
How to use Hex file viewer
- Choose the local file or files.
- Review the action and limits, then run the inspection.
- Check the result and download a separate output or report.
Useful next steps
Choose a byte window
Set the starting byte offset and window size. Offsets are absolute and start at zero.
Find a byte sequence
Optionally enter a hexadecimal sequence such as 48 65 6c 6c 6f. Search can cross read-chunk boundaries and moves to the first match.
Read without modifying
Compare the byte values and ASCII representation. Download the visible window and its metadata without changing the source.