Inspect Archive Files Locally
safe · secure · no server · works offline · fast
…or just start typing at the cursor.
safe · secure · no server · works offline · fast
…or just start typing at the cursor.
Drop a ZIP, TAR, GZ, Brotli or Zstandard file — or any unknown compressed blob — and OmniViewer shows its exact bytes with offsets, hexadecimal values and an ASCII panel. Use it to identify the format from its signature, read headers and embedded names, and spot trailing data or corruption. It all runs in your browser, with no upload and no server.
For the general archive formats OmniViewer does not extract; it is a byte-level inspector, which is exactly what you want when a download is mislabelled, truncated or suspicious. The view is windowed, so it opens a multi-gigabyte archive as readily as a small one — reading only the bytes needed to paint the screen. For structured formats inside, OmniViewer also has dedicated JSON, CSV and other toolkits.
No. OmniViewer is a static page with no server-side processing: your archive is read directly by your browser and never leaves your computer.
Not yet — the archive tools are a raw and hexadecimal byte inspector, not an extractor. You can identify the format from its signature, read headers and embedded file names, and spot trailing or corrupt data, all without uploading the file.
Effectively unlimited. The hex view reads only the bytes needed to paint the screen, so it opens a 20 GB archive as readily as a 2 KB one; the engine behind it has been tested in-browser with a 40 GB file.