File Byte Inspector

Inspect a bounded hexadecimal file preview with byte offsets and common signature hints.

Choose your file

Private by designProcessed locally · Originals unchanged

Choose local input and settings.

Preview & downloads

Your result will appear here

Choose a file, adjust the settings and select Inspect File.

How to use, limits & privacy

Choose any file, set a byte offset and preview length, then download the text preview. At most 65,536 bytes plus the first 16 signature bytes are read. Large files are sliced rather than loaded in full. Signatures identify PNG, JPEG, GIF, PDF, ZIP, WebP and ELF hints; a hint does not validate format or safety. Empty files produce an empty preview.

File inventory reads properties only. Byte Inspector reads bounded slices. Extension Renamer creates separate downloads.

Inputs are never uploaded. Results are rendered as text or a locally generated image. Original files remain unchanged. Changing input invalidates previous results.