Pewit AI Image Optimizer
Plugin homepage, documentation and paid plans: https://pewitlabs.com/product-ai-image-optimizer.html
Pewit AI Image Optimizer compresses JPEG and PNG images using the WordPress image editor (no external binaries), optionally writes WebP and AVIF sidecars next to the original, and can create AV1 WebM sidecars for video via ffmpeg. It scans your library for heavy and LCP-critical images, previews savings per file, and processes bulk jobs in the background with automatic backups and one-click rollback.
Fully functional and free
Every feature in this plugin is free and fully functional: scan your library, preview and apply compression one image at a time, find LCP-critical images over a size budget, create WebP/AVIF sidecars, create AV1 WebM video sidecars (ffmpeg), run bulk background optimization jobs, auto-optimize on upload, back up originals before changes and roll back with one click. Nothing is locked behind a license.
Optionally, you can subscribe to priority support at https://pewitlabs.com/product-ai-image-optimizer.html — this is a paid external service, not a requirement to use the plugin.
Compression
- JPEG quality and PNG compression level controls.
- WebP sidecar with compression priority presets.
- AVIF sidecar with configurable quality.
- AV1 WebM video sidecar via ffmpeg (libsvtav1 / libaom-av1).
- Before/after size preview — you approve each save.
Scanning
- Library scan with a configurable size threshold.
- PageSpeed Budget: find LCP-critical images (featured + first in content) over a KB budget.
- Used-images-only filter and filename exclude patterns.
- EtchWP-aware scanning when EtchWP is active.
Background jobs & safety
- Bulk background optimization via WP-Cron, one image at a time.
- Auto-optimize JPEG/PNG and video on upload.
- Backup-first snapshots of originals with one-click rollback.
- Optional email report when a bulk job completes.
External services
This plugin compresses and converts media locally on your own server using the WordPress image editor and (optionally) a locally installed ffmpeg binary. It does not send your images or media to any third-party AI provider, and no API key is required.
The only third-party service the plugin can connect to is Freemius, used for licensing and updates:
Freemius (licensing & updates — https://freemius.com): * What and when: used for license activation, plugin updates and, for any optional paid plan, checkout as Merchant of Record. Opt-in diagnostic data sharing is optional and only sent if you agree during activation. * Data sent: when opted in, basic site/environment and plugin usage data for license validation and update delivery. * Terms: https://freemius.com/terms/ — Privacy: https://freemius.com/privacy/
Source code
All JavaScript and CSS shipped in this plugin (in assets/js and assets/css) is the original, hand-written, human-readable source. Nothing is minified, compiled, transpiled or generated by a build tool, so no separate source files are required — what you read in the plugin is the source. The only bundled third-party library is the Freemius SDK (vendor/freemius), whose source is available at https://github.com/Freemius/wordpress-sdk