Hex Editor · free, in your browser

View a file in hex

See what is really inside a file: every byte in hex with its offset, and the readable characters beside it. Large files open page by page.

View a file in hex

How to do it

1. Drop any file on the page, or choose Open.
2. Scroll the offset, hex and ASCII columns; the Type line names the format from its first bytes.
3. Type an offset such as 0x4D2 in the Go box to jump there.
4. Search for hex bytes such as 4D 5A, or for text, and step with Next and Prev (F3).

Your files stay on this device: Hex Editor runs in your browser, with no upload, no account and no watermark.

Questions

Can I change bytes too?

Yes. Select a byte and type two hex digits. Undo and redo work, and Download saves an edited copy; the original is never overwritten.

How big a file can it open?

Large ones: the file is read 64 KB at a time as you scroll, so a 100 MB file opens without being loaded into memory whole.

Is the file uploaded?

No. It is read in your browser and stays on your device.

More with Hex Editor

• Identify a file by its magic bytes

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