Hex Viewer

How it works

This tool reads your file's raw bytes and displays them as the classic hex-and-ASCII dump — 16 bytes per row, shown both as two-digit hex values and as their printable-ASCII equivalent (a dot for anything non-printable). Only the rows currently visible on screen are ever added to the page, so browsing a huge file stays instant instead of freezing the tab trying to render everything at once. File type detection reuses the same byte-signature check this site's image conversion tools use.

FAQ

What can I use this for?

Checking a file's real magic bytes when the extension might be wrong or missing, looking for embedded text or markers inside a binary file, verifying a byte-level edit, or just satisfying curiosity about what a file actually contains underneath its format.

Is there a file size limit?

Files are read up to a generous size limit — you're bounded by your own browser's available memory beyond that, not an artificial cap. The dump itself renders instantly regardless of file size, since only the rows currently on screen are ever added to the page.

Is my file uploaded anywhere?

No. The file is read and displayed entirely in your browser — nothing is sent to a server.