Stego
Steganography and forensics toolkit for CTF — extract LSB data from images, view individual bit planes, reveal or embed zero-width text, inspect file structure (PNG chunks, JPEG segments, ZIP entries, strings), and scan files for embedded signatures.
Upload an image to pull raw bytes from a bit plane — the classic place a flag hides.
Upload an image to render a single bit plane as black & white — hidden shapes often pop out.
Paste text to scan for hidden zero-width data.
Upload any file to inspect its real type, structure (PNG chunks / JPEG segments / ZIP entries), printable strings, and embedded files.
Upload any file to scan for embedded file signatures (binwalk-style).
Upload an image to split its channels into separate planes, or amplify its low bits so faint patterns become visible.