Bitpeek — Hex & Binary Inspector
Inspect, edit, search, and compare binary data in your browser.
local browser processing no upload no account
Workspace
Paste bytes or open a local file to begin.
Tools
Reference pages for each operation in the workspace.
- Hex editor Edit raw bytes and individual bits.
- Binary viewer Read offsets, values, hashes, entropy, and text.
- Binary diff Compare two buffers by byte offset.
- File signatures Check common magic bytes at the start of a file.
- Hex to text Decode byte sequences as UTF-8 or ASCII.
File format references
Leading signatures are clues, not complete format validation.
| Format | Signature at offset 0 | Extension | Reference |
|---|---|---|---|
| PNG | 89 50 4E 47 0D 0A 1A 0A |
.png |
header layout |
| JPEG | FF D8 FF |
.jpg .jpeg |
marker structure |
25 50 44 46 |
.pdf |
file structure | |
| ZIP | 50 4B 03 04 |
.zip |
record layout |
| ELF | 7F 45 4C 46 |
varies | header fields |
Operation
The workspace accepts typed data and local files.
Basic use
- Enter hex, binary, decimal, Base64, or UTF-8 text, or open a file.
- Select bytes to inspect integer, floating-point, text, checksum, hash, entropy, and signature values.
- Edit a byte or bit, search for a pattern, reverse or invert a selection, then save the result.
Comparison
Open a reference file with Compare. Bitpeek marks modified bytes and length differences at matching offsets. The exported JSON patch records the reference-to-current changes. It does not perform sequence alignment or format-aware comparison.
Local processing and limits
Files are processed in this browser. Nothing is uploaded.
Data handling
File contents, names, pasted input, searches, edits, hashes, extracted strings, comparisons, and patches remain in browser memory. Bitpeek has no file-upload endpoint and requires no account.
Workspace limit
Each opened file or comparison file is limited to 256 KiB. For larger files, extract the relevant range with a trusted local tool. Keep a backup and validate saved bytes with software that understands the file format.