Hex Editor
Free Hex Editor on AboveTool. Inspect files, hashes, magic bytes, and encodings in your browser — private, no upload.
Hex Editor
lets you view and lightly patch hex bytes then download the modified buffer
Drop file here or click to browse
Processed entirely in your browser
Private by design — files and text stay on this device. Results are indicative helpers, not forensic certification.
About Hex Editor
Hex Editor is lets you view and lightly patch hex bytes then download the modified buffer. It works by calculating reads local File/ArrayBuffer data, applies byte and text analysis, then shows results on-page. Back up the original file before saving patches. Hex Editor runs free in your browser at abovetool.com — no signup, instant results.
How to use
- Upload a file or paste text, depending on the tool.
- Tune options such as byte limit, hash algorithm, or encoding.
- Click Analyze to inspect bytes, hashes, MIME clues, or text — all locally.
Features
- Magic-byte, hash, hex, entropy, and string analysis
- Multi-file compare and extension/magic validation
- Text encoding, MIME lookup, and line-ending tools
- 100% private — files never leave your browser
Frequently asked questions
What is Hex Editor for?
Hex Editor is lets you view and lightly patch hex bytes then download the modified buffer.
How does Hex Editor calculate the result?
It calculates reads local File/ArrayBuffer data, applies byte and text analysis, then shows results on-page.
Any tips for using this calculator?
Back up the original file before saving patches.
Is Hex Editor free on AboveTool?
Yes. Hex Editor is free to use on abovetool.com with no account required, and results are calculated instantly in your browser.