Description
OneTap WebP Converter scans your WordPress Media Library and converts every JPG/PNG attachment — including all registered thumbnail sizes — to the modern WebP format. Unlike plugins that keep both the original and a WebP copy, this plugin replaces the file in place, so your Media Library stays clean and your storage usage doesn’t grow.
Key Features
- One-tap bulk conversion of all JPG/PNG images already in your Media Library
- Converts every registered image size (thumbnail, medium, large, custom sizes), not just the full-size file
- Uses Imagick or GD, whichever is available on your server
- Adjustable WebP quality (1–100)
- Optional backup of original files before conversion (
.origcopies), with a one-click Restore option - Optional automatic rewriting of image URLs inside your post/page content
- Batched AJAX processing with a live progress bar and log, so large libraries don’t time out
- Live Media Library stats: total images, JPG/JPEG count, PNG count, and images already in WebP
Important — please read before use
This plugin modifies files on disk. If the backup option is disabled, original JPG/PNG files are permanently deleted after conversion. We strongly recommend:
- Taking a full site backup before running a bulk conversion.
- Keeping the “Backup originals” option enabled (it is enabled by default) so you can restore files if needed.
- Testing on a staging site first if possible.
Server Requirements
Your server needs either the Imagick PHP extension (with WebP support) or the GD extension (with WebP support). If neither is available, the plugin will still activate and show a clear admin notice explaining the requirement.
Installation
- Upload the plugin files to the
/wp-content/plugins/onetap-webp-converterdirectory, or install the plugin directly through the WordPress “Plugins > Add New” screen. - Activate the plugin through the “Plugins” screen in WordPress.
- Go to Settings > OneTap WebP Converter to review your Media Library status and configure quality/backup options.
- Click “Convert All Images to WebP” to start the bulk conversion.
FAQ
-
Will this delete my original images?
-
If the “Backup originals” setting is enabled (the default), a
.origcopy of each original file is kept and can be restored later with the “Restore Originals” button. If backup is disabled, originals are permanently deleted after a successful conversion. -
What happens to image URLs already used in my posts?
-
If “Rewrite post content” is enabled (the default), the plugin searches your post/page content for the old JPG/PNG URLs and replaces them with the new WebP URLs. URLs stored elsewhere (widgets, theme options, custom fields, some page builders) are not automatically updated.
-
What if my server doesn’t support WebP?
-
The plugin checks for Imagick or GD with WebP support. If neither is available, an admin notice is shown with clear instructions. The plugin will still activate.
-
Does this create duplicate files?
-
No. The original file is replaced by the WebP file at the same path (with the
.webpextension), so your Media Library does not end up with duplicate entries per image.
Reviews
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Contributors & Developers
“OneTap WebP Converter” is open source software. The following people have contributed to this plugin.
Contributors
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Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.0.0
- Initial release.