Title: Pressundo Image Optimizer
Author: pressundo
Published: October 14, 2026
Last modified: October 14, 2026
---
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# Pressundo Image Optimizer
By [pressundo](https://profiles.wordpress.org/pressundo/)
[Download](https://downloads.wordpress.org/plugin/pressundo-image-optimizer.1.2.2.zip)
* [Details](https://kea.wordpress.org/plugins/pressundo-image-optimizer/#description)
* [Reviews](https://kea.wordpress.org/plugins/pressundo-image-optimizer/#reviews)
* [Installation](https://kea.wordpress.org/plugins/pressundo-image-optimizer/#installation)
* [Development](https://kea.wordpress.org/plugins/pressundo-image-optimizer/#developers)
[Support](https://wordpress.org/support/plugin/pressundo-image-optimizer/)
## Description
Pressundo Image Optimizer optimizes WordPress Media Library images locally on your
server. It can compress JPEG/PNG files, generate WebP and AVIF variants, improve
responsive image delivery, add missing intrinsic dimensions, and manage image loading
behavior without requiring a remote image CDN.
Its focus is local, performance-aware image delivery rather than cloud-only compression:
eligible large decorative images can use adaptive AVIF quality with a visual-similarity
guard, while the optional PageSpeed workflow can identify LCP images and use stored
analysis to improve priority/preload decisions.
Main features:
* Local image optimization with WordPress image editors.
* Optional Sharp + libvips support when Sharp is provisioned by the server administrator.
* WebP and AVIF generation.
* Adaptive AVIF compression for eligible large decorative images, with a visual
similarity guard.
* Responsive `srcset` and `sizes` enhancement for local Media Library images.
* Optional `` delivery with modern formats and original fallback.
* Optional optimization of inline CSS background images through `image-set()`.
* Automatic width and height attributes for supported local raster images when
dimensions are missing.
* Native lazy loading management with protection for priority images.
* Original-image backups and per-image restore.
* Bulk optimization and targeted re-optimization.
* WP-CLI commands for optimization and diagnostics.
* Optional PageSpeed Insights integration for LCP image detection and preload selection.
The plugin does not download or install executable dependencies. If Sharp is not
available on the server, it automatically falls back to the WordPress image editor
stack (Imagick/GD when supported).
### External services
This plugin can optionally use the Google PageSpeed Insights API to analyze Largest
Contentful Paint (LCP). This integration is disabled by default and requires explicit
activation in the plugin settings.
When enabled and an analysis is started, the plugin sends the analyzed page URL,
the selected strategy (`mobile` or `desktop`), the performance category, the locale,
and an optional API key to Google PageSpeed Insights. No PageSpeed request is made
from the public frontend. Stored analysis results are kept in the local WordPress
database and reused for frontend preload decisions.
Service: Google PageSpeed Insights API
https://developers.google.com/speed/docs/
insights/v5/get-started
Google APIs Terms of Service:
https://developers.google.com/terms
Google Privacy Policy:
https://policies.google.com/privacy
## Installation
1. Upload the plugin folder to `/wp-content/plugins/` or install the ZIP from Plugins
> Add New.
2. Activate Pressundo Image Optimizer.
3. Open Image Optimizer > Settings and review the compression and delivery options.
4. Run a test on a small set of images before processing the complete Media Library.
5. If you want to use Sharp + libvips, provision Sharp on the server in the runtime
path shown by the plugin. The plugin itself does not download or install Sharp.
6. If you want PageSpeed/LCP analysis, explicitly enable Google PageSpeed Insights
in the settings first.
## FAQ
### Does the plugin require a cloud image service?
No. Image optimization and format generation are performed locally on the WordPress
server.
### Does the plugin install Sharp automatically?
No. For WordPress.org compliance and server security, the plugin does not download
or execute installer code from third parties. Sharp can be provisioned by the server
administrator. Without Sharp, supported WordPress image editors are used automatically.
### Does the plugin contact Google automatically?
No. Google PageSpeed Insights integration is disabled by default. It must be explicitly
enabled before PageSpeed analysis or background LCP processing can contact Google.
### Are original images backed up?
Backups can be enabled in the plugin settings. When enabled, originals are stored
under the WordPress uploads directory so they can survive plugin updates.
### Does it work with custom theme image markup?
Yes. WordPress-native image hooks remain available on supported versions. On WordPress
6.9 and newer, the optional full-document compatibility pass uses the core template
enhancement output buffer for local Media Library images rendered directly by themes,
menus, headers, footers, and custom templates. The plugin does not open its own
global output buffer.
## Reviews
There are no reviews for this plugin.
## Contributors & Developers
“Pressundo Image Optimizer” is open source software. The following people have contributed
to this plugin.
Contributors
* [ pressundo ](https://profiles.wordpress.org/pressundo/)
[Translate “Pressundo Image Optimizer” into your language.](https://translate.wordpress.org/projects/wp-plugins/pressundo-image-optimizer)
### Interested in development?
[Browse the code](https://plugins.trac.wordpress.org/browser/pressundo-image-optimizer/),
check out the [SVN repository](https://plugins.svn.wordpress.org/pressundo-image-optimizer/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/pressundo-image-optimizer/)
by [RSS](https://plugins.trac.wordpress.org/log/pressundo-image-optimizer/?limit=100&mode=stop_on_copy&format=rss).
## Changelog
#### 1.2.2
* Initial public release on WordPress.org.
* Local JPEG/PNG optimization with WebP and AVIF generation.
* Adaptive AVIF compression with visual-quality safeguards.
* Responsive image delivery, intrinsic dimensions, backups and restore.
* Bulk processing, WP-CLI diagnostics, and optional PageSpeed/LCP-aware optimization.
* Pressundo-branded internal namespace and WordPress.org-ready packaging.
## Meta
* Version **1.2.2**
* Last updated **18 hours ago**
* Active installations **Fewer than 10**
* WordPress version ** 6.4 or higher **
* Tested up to **7.1.3**
* PHP version ** 8.1 or higher **
* Language
* [English (US)](https://wordpress.org/plugins/pressundo-image-optimizer/)
* Tags
* [AVIF](https://kea.wordpress.org/plugins/tags/avif/)[image optimization](https://kea.wordpress.org/plugins/tags/image-optimization/)
[lcp](https://kea.wordpress.org/plugins/tags/lcp/)[performance](https://kea.wordpress.org/plugins/tags/performance/)
[webp](https://kea.wordpress.org/plugins/tags/webp/)
* [Advanced View](https://kea.wordpress.org/plugins/pressundo-image-optimizer/advanced/)
## Ratings
No reviews have been submitted yet.
[Your review](https://wordpress.org/support/plugin/pressundo-image-optimizer/reviews/#new-post)
[See all reviews](https://wordpress.org/support/plugin/pressundo-image-optimizer/reviews/)
## Contributors
* [ pressundo ](https://profiles.wordpress.org/pressundo/)
## Support
Got something to say? Need help?
[View support forum](https://wordpress.org/support/plugin/pressundo-image-optimizer/)