About Hex Viewer

Hex Viewer shows a file or some text as the familiar three-column hex dump: the offset, the bytes in hexadecimal, and the printable ASCII with non-printable bytes shown as a dot.

The file is read with the browser File API and never uploaded.

How to use it

  1. Choose a file, or paste text or a run of hex.
  2. Set how many bytes per row.
  3. Read the dump; copy the whole thing if you need it.

Common questions

Can I paste hex instead of a file?

Yes. Input that looks like hex (with or without spaces or 0x) is read as bytes; anything else is treated as UTF-8 text.

Is there a size limit?

Large files are handled, but only the first 64 KB is shown to keep the page responsive.

Is my file uploaded?

No. It is read and dumped in the page.

What does the ASCII column show?

Printable characters (0x20 to 0x7e); every other byte is a dot.