File security and browser processing
Understand local conversion, file checks, SVG, XML and ZIP restrictions, and what to review after downloading a result.
Where are files processed?
Conversion reads your selected file in the current browser and creates a new result. Coverton’s conversion code has no feature that sends the original or result to a conversion server. Network requests still occur to load the website and conversion engines.
What do the checks cover?
For supported formats, the converter compares the extension with known file signatures and checks size and structure. Coverage varies by format. These checks are not an antivirus scan or a guarantee that a file is harmless.
Why some files are blocked
SVGs containing executable content or external references and XMLs containing external entities are rejected. ZIP checks restrict unsafe paths, encryption, symbolic links and excessive decompressed sizes.
Size limits help manage memory use. Files below a limit can still fail because of their complexity or the browser environment.
Review the downloaded result
Check the content and metadata in both the original and output. Local conversion does not automatically remove personal information or anonymize a document. On a shared device, also review the downloads folder and browser history.
Do not rename an unknown file to bypass a check. When reporting a problem, start with the tool name, error code and reproduction steps rather than a sensitive original file.