Inspect the first 256B (Free), 1KB (Pro), or 8KB (Developer) of any file as hex with offset and ASCII sidebar.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Drop any file.
The first N bytes are sliced and rendered as a hex dump with offset column and ASCII sidebar.
Use the search box to find byte sequences within the dump.
0 bytes uploaded. Hex Header Inspector runs entirely in your browser. Files, passwords, and PGP private keys never leave your device. No analytics fire during processing — only after you opt-in to dashboard audit logging.
Hex rendering is DOM-heavy; tier limits ensure smooth UI. Developer unlocks 8 KB views for forensic depth.
Not in-browser. For full-file analysis use a desktop tool like xxd or HxD.