Add MIME Types

81 Quality Score

Active Installs

21/30

With 50,000 active installs it sits in the middle of the pack: popular enough to be trustworthy, but far from a household-name plugin like Safe SVG.

Update Freshness

25/25

A last-updated date of 2026-05-17 and explicit compatibility testing with WordPress 7.0 produce a perfect maintenance score, indicating the developer is actively keeping pace with core releases.

User Rating

13/15

The 84/100 average from 24 ratings is solid and above average for niche utility plugins, though the small sample size means the figure can shift quickly.

Support Health

8/15

Zero support threads opened and zero resolved is a double-edged signal: there are few enough users that nobody needs help, but you also have no public track record of the author responding to issues.

WP Compatibility

15/15

A minimum of WordPress 6.2 and PHP 7.4, combined with explicit testing on WordPress 7.0, earns full marks for compatibility with modern environments.

Scores higher than 84% of indexed plugins

About

The plugin additionally allows the mime types and file extensions to WordPress.

Active Installs 50k+

Rating ★★★★ 4.2/5

Last Updated 2026-05-17 5:59am GMT

Requires WordPress 6.2+

Tested Up To 7.0.4

Requires PHP 7.4+

✓ No known vulnerabilities

What It Does

Add MIME Types lets you register custom MIME types and file extensions on your WordPress site so that uploads or downloads blocked by default (such as CAD files, proprietary media, or niche document formats) are recognized correctly. It provides a settings screen in the admin where you add MIME/extension pairs, and the plugin then hooks into WordPress upload and file handling logic. In practice, this stops the 'Sorry, this file type is not permitted for security reasons' error for the formats you whitelist.

Who It's For

This plugin is best for site owners who regularly accept or serve less common file types that WordPress blocks out of the box, such as engineering firms sharing DWG files, design studios distributing INDD or AI assets, or training portals uploading SCORM packages. It also suits administrators who want a quick, code-free way to extend the upload whitelist without editing functions.php or a child theme.

Who Should Skip It

If your site only ever handles common formats (images, PDFs, Office documents, audio, video), you have no reason to add MIME types and this plugin will just sit dormant in your dashboard. Developers comfortable editing wp-config.php or a mu-plugin can also skip it in favour of a few lines of code.

The Bottom Line

Add MIME Types is a focused, well-maintained utility that does exactly one thing and does it cleanly, earning an 81/100 overall quality score. Its biggest caveat is the support vacuum: 0 threads means there is no community safety net if you hit an edge case. For most users who just need to whitelist a handful of formats, it is a safe, lightweight choice.

Related Plugins

Safe SVG 89/100

Pick Safe SVG instead if your only blocked type is SVG, since it sanitizes uploads to close the XSS vector that simple MIME whitelisting ignores.

File Upload Types by WPForms 80/100

Choose File Upload Types by WPForms if you primarily need to control uploads on WPForms-powered forms and want form-level scope rather than site-wide rules.

Lord of the Files: Enhanced Upload Security 67/100

Pick Lord of the Files if you need stricter server-side MIME validation with magic-byte checking, not just an extension whitelist.