/* Allow Uploading of Known File Types */
function wpflt_allow_custom_file_types( $mimes ) {
$mimes['svg'] = 'image/svg+xml';
$mimes['woff2'] = 'application/x-font-woff2';
$mimes['doc'] = 'application/msword';
return $mimes;
}
add_filter( 'upload_mimes', 'wpflt_allow_custom_file_types' );By Default WordPress supports Uploading the following file types:
Images: .jpg, .jpeg, .png, .gif, .ico, .webp
Documents: .pdf, .doc, .docx, .ppt, .pptx, .pps, .ppsx , .odt , .xls, .xlsx, .psd
Audio: .mp3, .m4a, .ogg, .wav
Video: .mp4, .m4v (MPEG-4), .mov , .wmv, .avi, .mpg, .ogv, .3gp, .3g2
But there are other known file types in WordPress which are not allowed to be uploaded for security reasons.
“Sorry, This File Type Is Not Permitted for Security Reasons” is the type of error message you will get when you try uploading files with extensions which are not allowed in WordPress.
To allow a specific file type, add the above code to your child theme’s functions.php. Specify the file extension along with the MIME type in the list. In the above code, we have added support for WOFF2, SVG and DOC. Modify according to your needs.
Utilize the below List of WordPress supported File Types to add more file support.
| Extension | MIME Type |
| .bmp | image/bmp |
| .tif | image/tiff |
| .tiff | image/tiff |
| .asf | video/x-ms-asf |
| .asx | video/x-ms-asf |
| .wm | video/x-ms-wm |
| .wmx | video/x-ms-wmx |
| .divx | video/divx |
| .flv | video/x-flv |
| .qt | video/quicktime |
| .mpe | video/mpeg |
| .webm | video/webm |
| .mkv | video/x-matroska |
| .txt | text/plain |
| .asc | text/plain |
| .c | text/plain |
| .cc | text/plain |
| .h | text/plain |
| .csv | text/csv |
| .tsv | text/tab-separated-values |
| .ics | text/calendar |
| .rtx | text/richtext |
| .css | text/css |
| .htm | text/html |
| .html | text/html |
| .m4b | audio/mpeg |
| .ra | audio/x-realaudio |
| .ram | audio/x-realaudio |
| .mid | audio/midi |
| .midi | audio/midi |
| .wax | audio/x-ms-wax |
| .mka | audio/x-matroska |
| .rtf | application/rtf |
| .js | application/javascript |
| .swf | application/x-shockwave-flash |
| .class | application/java |
| .tar | application/x-tar |
| .zip | application/zip |
| .gz | application/x-zip |
| .gzip | application/x-zip |
| .rar | application/rar |
| .7z | application/x-7z-compressed |
| .exe | application/x-msdownload |
| .pot | application/vnd.ms-powerpoint |
| .wri | application/vnd.ms-write |
| .xla | application/vnd.ms-excel |
| .xlt | application/vnd.ms-excel |
| .xlw | application/vnd.ms-excel |
| .mdb | application/vnd.ms-access |
| .mpp | application/vnd.ms-project |
| .docm | application/vnd.ms-word.document.macroEnabled.12 |
| .dotx | application/vnd.openxmlformats-officedocument.wordprocessingml.template |
| .dotm | application/vnd.ms-word.template.macroEnabled.12 |
| .xlsm | application/vnd.ms-excel.sheet.macroEnabled.12 |
| .xlsb | application/vnd.ms-excel.sheet.binary.macroEnabled.12 |
| .xltx | application/vnd.openxmlformats-officedocument.spreadsheetml.template |
| .xltm | application/vnd.ms-excel.template.macroEnabled.12 |
| .xlam | application/vnd.ms-excel.addin.macroEnabled.12 |
| .pptm | application/vnd.ms-powerpoint.presentation.macroEnabled.12 |
| .ppsm | application/vnd.ms-powerpoint.slideshow.macroEnabled.12 |
| .potx | application/vnd.openxmlformats-officedocument.presentationml.template |
| .potm | application/vnd.ms-powerpoint.template.macroEnabled.12 |
| .ppam | application/vnd.ms-powerpoint.addin.macroEnabled.12 |
| .sldx | application/vnd.openxmlformats-officedocument.presentationml.slide |
| .sldm | application/vnd.ms-powerpoint.slide.macroEnabled.12 |
| .onetoc | application/onenote |
| .onetoc2 | application/onenote |
| .onetmp | application/onenote |
| .onepkg | application/onenote |
| .odp | application/vnd.oasis.opendocument.presentation |
| .ods | application/vnd.oasis.opendocument.spreadsheet |
| .odg | application/vnd.oasis.opendocument.graphics |
| .odc | application/vnd.oasis.opendocument.chart |
| .odb | application/vnd.oasis.opendocument.database |
| .odf | application/vnd.oasis.opendocument.formula |
| .wp | application/wordperfect |
| .wpd | application/wordperfect |
| .key | application/vnd.apple.keynote |
| .numbers | application/vnd.apple.numbers |
| .pages | application/vnd.apple.pages |
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