Not a developer? Go to




When uploading files through Movable Type’s upload mechanism, a ceiling is put on the size of the files that can be uploaded, to prevent denial of service attacks.

Default value: 20_480_000 (approximately 20MB, decorative underscores not supported in mt-config.cgi)


# Double to approximately 50MB
CGIMaxUpload 50000000


If a user attempts to upload a file larger than the CGIMaxUpload limit but still less than any limit opposed by the web server itself, MT will display this error:

The file you uploaded is too large.