Tool · Data
Encoding decoder
Decode Base64, Base64url, hex, binary, URL encoding, UTF-16LE and ROT13 side by side, and encode text for search terms.
LocalRuns entirely in this browser tab. Files are read from your device and are never uploaded.
Workspace
Other tools
- Integrity
Hash calculator
Compute MD5, SHA-1, SHA-256 and SHA-512 for a local file, compare against a reference value and save a hash record.
- Files
File signature identifier
Identify a file from its leading bytes across 67 signatures, including SQLite, EVTX, registry hives, Prefetch, LNK and E01, and flag extension mismatches.
- Files
Hex viewer and data inspector
Browse any local file in hex, search for bytes or text, and decode the selected offset as integers, floats, FILETIME, Unix, FAT, Apple time and GUID.
- Media
Exif and GPS reader
Read camera, time and GPS tags from a JPEG or TIFF locally, convert OffsetTime-qualified dates to UTC and see coordinates in decimal degrees.
- Mobile
IMEI structure check
Split an IMEI or IMEISV into TAC, serial number and check digit, and verify the Luhn check digit defined in 3GPP TS 23.003.
- Time
Timestamp decoder
Paste an unknown number and see it decoded as Unix (s, ms, µs, ns), FILETIME, WebKit, Apple absolute, HFS+, GPS and FAT time, with plausibility flags.
- Time
Local time to UTC
Convert a wall-clock time in any IANA zone to UTC using historical daylight-saving rules, and flag times that are skipped or repeated.