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Image Tools centralises every image-processing option in WordPress. It covers format conversion, delivery optimisation, SVG uploads, thumbnail regeneration, and server configuration snippets.

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Server support status

Four status cards at the top of the page show which imaging capabilities are available on your server:

GD Library

Required for basic image processing and WebP conversion on most hosts.

ImageMagick

Higher-quality alternative to GD. Supports more formats and better colour profiles.

WebP Support

GD with WebP support or ImageMagick is required. Shown as available if either is detected.

AVIF Support

Requires PHP 8.1+ with GD imageavif or ImageMagick compiled with an AVIF codec.
AVIF support depends on both the PHP version and the codec installed on the server. If the card shows “Not available”, ask your host whether ImageMagick on the server was compiled with AVIF support, or upgrade to PHP 8.1+ with a GD build that includes imageavif.

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Image settings

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WebP conversion

Toggle Convert to WebP on Upload to automatically create a .webp sidecar file alongside every JPEG, PNG, GIF, or BMP uploaded through the WordPress media library. The original file is kept unless Replace Original with WebP is enabled. Requires GD with WebP support or ImageMagick.

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AVIF support

Toggle Allow AVIF Uploads to register image/avif as an allowed MIME type and, if server support is present, convert uploads to AVIF. AVIF typically produces smaller files than WebP at the same visual quality. Requires PHP 8.1+ with GD imageavif or ImageMagick with an AVIF codec.

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Maximum image dimensions

Set Max Width and Max Height in pixels. Any uploaded image larger than these dimensions is resized down proportionally on upload. Set either value to 0 to disable that constraint.

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JPEG quality

The JPEG Quality slider controls the compression level applied when WordPress processes JPEG images (thumbnails, resizes, and WebP conversion). The value ranges from 10 to 100; higher values produce better quality but larger files.

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WebP delivery options

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Serve WebP automatically

When enabled, WP Manager Pro hooks into wp_get_attachment_url to return .webp URLs for browsers that support the format. On Apache, it also writes rewrite rules to wp-content/uploads/.htaccess so the web server serves the sidecar file directly with no PHP overhead: 
RewriteEngine On
RewriteCond %{HTTP_ACCEPT} image/webp
RewriteCond %{REQUEST_FILENAME} \.(jpe?g|png|gif|bmp|tiff?)$
RewriteCond %{REQUEST_FILENAME}\.webp -f
RewriteRule ^ %{REQUEST_URI}.webp [L,T=image/webp]
On Nginx, the PHP filter is used as a fallback. Add the equivalent rewrite rule to your Nginx server block manually — see the Server Config Generator section below.

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Replace original with WebP

When enabled, the original JPEG or PNG file is permanently deleted after conversion and the attachment record is updated to point to the .webp file. This applies both on upload and during batch conversion.
Replacing originals is irreversible. Back up your media library before enabling this option and running a batch conversion.

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Auto-delete sidecar files

When an attachment is deleted from the WordPress media library, any matching .webp or .avif sidecar files are automatically deleted from disk.

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Batch convert existing images

The Batch Convert Existing Images card converts your existing media library images to WebP or AVIF format. Stats show how many images have already been converted and how many remain. Click Convert to WebP or Convert to AVIF to start. The plugin processes images in batches of 10 and displays a live progress bar. You can click Stop Conversion to pause at any time. To remove all sidecar files for a format, click the trash icon next to the format row.

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SVG support

By default WordPress blocks SVG uploads because malicious SVGs can contain embedded JavaScript. WP Manager Pro adds SVG support with server-side sanitization:
  • Enable Allow SVG Uploads and select which roles are permitted to upload SVGs: Administrator, Editor, and/or Author.
  • On upload, the plugin strips <script> tags, on* event attributes, javascript: hrefs, <foreignObject> elements, and <base> tags.
Restrict SVG uploads to trusted roles only. Even with sanitization, SVGs from untrusted sources can carry risks. Administrator is the recommended minimum.

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Thumbnail regeneration

Click Regenerate All Thumbnails to recreate every registered thumbnail size for every attachment in the media library. This is useful after:
  • Changing your theme (which registers different thumbnail sizes).
  • Adding or modifying image size registrations in a plugin.
  • Adjusting the max dimension or quality settings above.
Regeneration can take a long time on sites with large media libraries. Do not close the browser tab while it is running.

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Server Config Generator

The Server Config Generator provides copy-ready configuration snippets for two web servers.
Three snippets are provided:WebP serving — add inside your server {} block:
location ~* \.(jpe?g|png|gif|bmp|tiff?)$ {
    add_header Vary Accept;
    try_files $uri.webp $uri =404;
}
Security headers — recommended headers for your server {} or location / block:
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "SAMEORIGIN" always;
add_header X-XSS-Protection "1; mode=block" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;
add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
Browser cache rules — cache static assets aggressively:
location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff2?)$ {
    expires 1y;
    add_header Cache-Control "public, immutable";
    access_log off;
}
Click Copy next to any snippet to copy it to the clipboard.

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