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Moo Digital Custom MIME Types

A lightweight WordPress plugin that enables uploading of custom file types (EPUB, SVG, etc.) to the WordPress media library with built-in security features.

by Moo Digital · github.com/moo-digital/moo-digital-custom-mime-types · website

★ 0stars

Install

Download source zip No release zip yet

This is the repository archive. It installs, but the folder name will carry the branch suffix and updates will not flow.

Install straight from GitHub with WP-CLI:

wp plugin install https://github.com/moo-digital/moo-digital-custom-mime-types/archive/refs/heads/main.zip
No built-in updater. New versions won't appear under Dashboard → Updates. Install new releases yourself, or let Git Updater track the repository.
Readme github.com/moo-digital/moo-digital-custom-mime-types ↗

A lightweight WordPress plugin that enables uploading of custom file types (EPUB, SVG, etc.) to the WordPress media library with built-in security features.

Features

  • Custom MIME Type Support: Enable additional file types in WordPress media uploads
  • SVG Sanitisation: Automatic XSS protection for SVG files
  • Simple Configuration: Easy-to-edit configuration array
  • Moo Digital Integration: Integrates with the shared Moo Digital admin menu
  • Security First: Built with WordPress security best practices

Default Enabled MIME Types

  • EPUB (.epub) - application/epub+zip
  • SVG (.svg) - image/svg+xml (with XSS sanitisation)

Installation

  1. Download the plugin files
  2. Upload the moo-digital-custom-mime-types folder to /wp-content/plugins/
  3. Activate the plugin through the 'Plugins' menu in WordPress
  4. Access settings via Moo Digital > Custom MIME Types in the WordPress admin

Configuration

Adding or Removing MIME Types

To modify which file types are supported:

  1. Open moo-digital-custom-mime-types.php
  2. Locate the MOO_CUSTOM_MIMES configuration array (around line 24)
  3. Add or remove entries as needed:
define('MOO_CUSTOM_MIMES', [
    'epub' => 'application/epub+zip',
    'svg'  => 'image/svg+xml',
    // Add more MIME types here:
    // 'webp' => 'image/webp',
    // 'woff2' => 'font/woff2',
]);
  1. Save the file

Common MIME Types

Here are some additional MIME types you might want to add:

'webp' => 'image/webp',           // WebP images
'woff' => 'font/woff',             // Web Open Font Format
'woff2' => 'font/woff2',           // Web Open Font Format 2
'ttf' => 'font/ttf',               // TrueType Font
'otf' => 'font/otf',               // OpenType Font
'json' => 'application/json',      // JSON files
'webm' => 'video/webm',            // WebM video
'ogg' => 'audio/ogg',              // OGG audio

Security

SVG Sanitisation

When SVG uploads are enabled, the plugin automatically sanitises uploaded files by removing:

  • `