Inspect magic bytes file type
Inspect file signatures instead of trusting the extension.
Input & settings
How to use this tool
Inspect file signatures instead of trusting the extension.
Limits and behavior
Results are generated in your browser, not uploaded to CraftAI. Inputs are size-limited and validated. Inspect file signatures instead of trusting the extension. Enter your own input, adjust settings, then process. Inspect and save the generated result. Reset or cancel to clear results. Recognizes common PDF, PNG, JPEG, GIF, WebP, ZIP, MP3, WAV, Ogg, MP4 and WebM containers. A signature alone cannot prove a file is safe.
Inspect a file's internal signature
Examine recognizable leading byte patterns instead of trusting the filename extension alone.
Does an expected file signature prove safety?
No. File-type detection is not a malware scan or proof that file contents are harmless.
Related tools: calculate file checksum · compare file checksums