What are embedded files in a PDF?
PDF allows other files — executables, archives, other PDFs — to be attached within the document structure, some of which are not visible in standard viewers.
Detect Embedded Files
Scan a PDF for hidden file attachments or embedded streams locally in your browser — a useful check before opening documents from unfamiliar sources.
Frequently asked questions
Is detecting embedded files a security guarantee?
No. The tool looks for standard attachment structures. Novel or obfuscated embedding methods may not be caught. It is a helpful first check, not a substitute for a full security scan.
Is my PDF uploaded for this check?
No. The scan parses the file structure locally in your browser.
What if embedded files are found?
Do not extract or open the embedded files unless you are sure of the source. If the document arrived unexpectedly, treat it with caution.