Free WordPress Plugin

Convert your images to
WebP in bulk

Codcy Image Optimizer converts JPEG and PNG files to WebP directly on your server — no external API, no subscription, automatic backup.

Download from WordPress.org How it works
Free
No subscription
~90%
Avg. file size reduction
0
External API calls
Auto
Original backup
Features
Everything you need, nothing you don't

Runs on your server

Uses PHP's built-in Imagick or GD library. Your images never leave your server.

Automatic backup

Originals are copied to codcy-image-backup/ before any conversion.

Batch processing

Processes images in batches of 20 to avoid server timeouts. Resumes automatically if interrupted.

Detailed report

See exactly how many images were converted, space saved, average compression rate, and any errors.

Smart skipping

If a WebP conversion would result in a larger file, the original is kept untouched.

No account required

Fully free and open source. Install, activate, and start optimizing immediately.

Screenshots
Clean and simple interface
Scan and processing view
Scan results & live processing log
Final optimization report
Final report with full statistics
How it works
Three steps to a faster site
1

Scan your Media Library

The plugin scans all images and shows a full breakdown — total count, file size, and format distribution — before making any changes.

2

Review and start

Nothing happens until you click Start. Original files are backed up automatically before conversion begins.

3

Get the full report

When complete, a detailed summary shows converted count, total space saved, average compression rate, and a list of any errors.

Ready to speed up your site?

Free to install. Works with any WordPress site running PHP 7.4 or higher.

Download Free on WordPress.org