Drop any file. Any size.
safe · secure · no server · works offline · fast
…or just start typing at the cursor.
↓ scroll for about & FAQsafe · secure · no server · works offline · fast
…or just start typing at the cursor.
↓ scroll for about & FAQOmniViewer is a universal file viewer that runs entirely in your browser. Drop any file — JSON, CSV, logs, images, audio, video, or a mystery binary — and instantly see its raw content, plus a hex view with offsets and an ASCII panel. There is no upload and no server: the page reads only the bytes needed to paint your screen, so even multi‑gigabyte files open instantly and privately.
Format-specific tools — formatted JSON, CSV tables, media metadata and playback — are rolling out per format, powered by the same engine as fastjsonviewer.com and hugecsv.com.
No. OmniViewer is a static page with no server-side processing: your file is read directly by your browser and never leaves your computer.
OmniViewer only ever reads the bytes it needs to paint the screen, so file size is effectively unlimited — it uses the same viewing engine as fastjsonviewer.com, which has been tested in-browser with a 40 GB file.
Every file gets a raw content view and a hex view today. Format-specific tools (formatted JSON, CSV tables, media metadata and playback) are rolling out per format, and unknown binaries always fall back to hex.
Yes — the front page is an empty buffer. Just start typing at the cursor, or paste text, and the viewer (including the hex tab) treats it as content.
Same engine, same authors. OmniViewer is the universal front door for any file; fastjsonviewer.com and hugecsv.com remain the deep, format-specific tools for huge JSON and CSV files.