|Files and file uploads: $wgMaxUploadSize|
|Maximum size of uploaded files (in bytes)
|Introduced in version:||1.8.0 (r16159)|
|Removed in version:||still in use|
|Allowed values:||(integer or array) (see below)|
|Default value:||1024*1024*100 (100MB)|
|Other settings: Alphabetical | By function|
This setting allows you to place a maximum size on each file that can be uploaded to your wiki.
The value(s) you specify refer to the maximum size, in bytes, of a single file upload (not the total of all uploaded files). The limit is applied at the time of upload, so lowering this value at a later date won't remove existing files that are now 'too large'. This limit only applies to chunked uploads and uploads without separate chunks might have a lower upload limit based on the PHP setting.
There are 1024 bytes in a kilobyte, and 1024 kilobytes in a megabyte, so
1024 * 1024 * 100 = 100 megabytes.
Specifying an integer
This limits the maximum size of uploaded files, in bytes, regardless of how they are uploaded.
$wgMaxUploadSize = 20000000;
Specifying an array
If you would like different maximum sizes for file uploads and upload-by-URL, you can set this variable to an array. For example:
$wgMaxUploadSize = [ '*' => 250 * 1024, // 250 KB 'url' => 500 * 1024, // 500 KB ];
This example will set the maximum for all uploads to 250 KB, except for upload-by-URL, which will have a maximum of 500 KB.
To enable upload-by-URL, see