WP PlugIndex
WordPress plugin intelligence profile

Optimus – WordPress Image Optimizer

Effective image compression and optimization during the upload process. Smart, automatic and reliable.

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Current directory snapshot

Tested up to WordPress 6.9
Current version1.6.3
WordPress coverageTested up to WordPress 6.9
Minimum stackWP 4.6 · PHP 5.6
Directory statusactive
Last directory update2 Mar 20268mo ago
Active installations30K+Adoption metric — not a quality score
WordPress.org rating4.2 / 5 from 69 ratings
Official packageDirect from WordPress.org

Repository metrics are context, not quality scores. Active installations measure adoption and can strongly reflect a plugin’s age and historical popularity. Ratings, recent updates and “Tested up to” metadata also do not guarantee modern code, error-free operation, security, feature completeness or suitability for a particular site. Why active installs don’t tell the whole story →

WP PlugIndex currently records Optimus – WordPress Image Optimizer version 1.6.3 as active, updated 8mo ago and tested up to WordPress 6.9.

Overview

About this plugin

WordPress Image Optimizer

Optimus reduces the file size of uploaded media files automatically. Depending on the image and format, reductions in size of up to 70% are possible. Several kilobytes can be saved per image—these savings contribute positively to the performance of the blog website.

What’s most impressive about the compression technology: the quality of the images is maintained.

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There are three different versions of Optimus:

  • Optimus (Free) as base version with limitations (e.g. max of 100kb)
  • Optimus HQ (Premium) with expanded functionality for personal projects
  • Optimus HQ PRO (Premium) as professional solution for customer websites

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How does it work?

During the uploading process of images to the media library, the Optimus plugin simultaneously sends the images to the Optimus server, where the incoming material is processed and sent back in optimized form. Afterwards, the Optimus plugin saves the image version with a reduced file size in the media library.

The optimization of images – including thumbnails – is conducted in the background and outside of the view of the user. The image compression gains per file are displayed by Optimus within the media library in form of a percentage value, see screenshot.

Superfluous information that is saved by image processing programs and is not even necessary for displaying the image is extracted from image files. This way, the quality of the graphics remains intact while the image size can be reduced significantly. If you wish, Optimus keeps all author, EXIF and copyright information contained within the photos — the compressional gains will be correspondingly lower.

Optimus supports the conversion of images to the new WebP image format.

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It is recommended to use the WordPress Cache Enabler plugin to integrate the converted WebP images.

Features

  • Progressive JPEGs
  • Reduction of file size during the upload
  • Optimization of all preview images of a photo
  • No adjustments to code necessary
  • Optional: no removal of EXIF and IPTC metadata
  • Optional: HTTPS connection for the image transfer (Optimus HQ)
  • Optional: conversion to the WebP image format (Optimus HQ)
  • Faster load times for blog pages
  • Support for WooCommerce
  • WordPress multisite-support
  • Bulk optimization (optimize existing images)

Privacy

  • After the image optimization and transfer process, the Optimus server immediately deletes all the temporarily stored files. No files are stored!
  • The Optimus servers are located in Germany.

Tips

  • Photos should always be saved as JPEGs rather than PNGs. The PNG format works well for illustrations, JPEG on the other hand is the right choice for photographs. Another reason: the size reduction always works more quickly for JPEGs.
  • Your images have been optimized using Desktop tools such as ImageOptim (Mac) or PNGGauntlet (Win) before you upload them? Optimus has the significant benefit of also minimizing the thumbnails (=preview images) created by WordPress. After all, themes almost always integrate thumbnails rather than original images.

System Requirements

  • PHP >=5.6
  • WordPress >=4.6
  • Allow outbound connections

Storage Utilization

  • Backend: ~ 0,19 MB
  • Frontend: ~ 0,01 MB

Website

  • optimus.io

Author

  • KeyCDN
WordPress.org metadata

Plugin tags

Topics listed for this plugin in the WordPress.org directory.

  • image optimizer
  • optimize image
  • wordpress image optimizer
  • images
  • webp
Compatibility & maintenance

Compatibility & maintenance

Tested up to WordPress 6.9

Not yet marked as tested with WordPress 7.1. WordPress.org currently lists Tested up to 6.9.

Current WordPress releaseWordPress 7.1
WordPress.org Tested up to6.9
Minimum requirementsWordPress 4.6 · PHP 5.6
Update activity2 Mar 20268mo ago

“Tested up to” is directory metadata supplied by the plugin author. WP PlugIndex does not turn an older declaration into a claim that the plugin is incompatible.

Changes recorded by WP PlugIndex

Recent tracked changes

No tracked version or compatibility changes have been recorded by WP PlugIndex yet.

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