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Optimus · Version history

Optimus changelog and version history

Latest version
1.6.3
Mar 2, 2026 (8 months ago)
Releases
22
since 2014
In the last year
1
Tested up to
WordPress 6.9.11
PHP 5.6 or later

Releases each year

  • 20143 releases
  • 20159 releases
  • 20163 releases
  • 20172 releases
  • 20182 releases
  • 20211 release
  • 20221 release
  • 20261 release

20261 release

  1. Optimus 1.6.3Latest

    • WordPress 6.1 compatibility

20221 release

  1. Optimus 1.6.2

    • WordPress 6.0 compatibility

20211 release

  1. Optimus 1.6.1

    • Fix bulk image optimization (#13 @tg247)

20182 releases

  1. Optimus 1.6.0

    • Skip missing files
    • Added wpcli command for bulk optimization
    • Added option to append instead of replace file extension for webp files

  2. Optimus 1.5.0

    • Unsupported image types are now gracefully skipped
    • Renamed setting names and greyed out inapplicable settings to avoid confusion
    • Increased size limit for Optimus HQ to 10MB
    • Licences can now easily be extended
    • Optimize images uploaded through the REST API

20172 releases

  1. Optimus 1.4.9

    • Formatting updates

  2. Optimus 1.4.8

    • Improved the handling of 204 errors
    • Removed language files

20163 releases

  1. Optimus 1.4.7

    • Improved the bulk optimizer

  2. Optimus 1.4.6

    • Added support for WP Retina 2x

  3. Optimus 1.4.5

    • Optimization to avoid conflicts with other plugins or themes

20159 releases

  1. Optimus 1.4.4

    • Fixed static function warning in PHP 5.6

  2. Optimus 1.4.3

    • Increased timeout value to 180 seconds

  3. Optimus 1.4.2

    • Allow to generate WebP images on already optimzed images (bulk optimizer)

  4. Optimus 1.4.1

    • Improves bulk optimization error handling

  5. Optimus 1.4.0

    • Added PNG in the free version and the manual optimization setting

  6. Optimus 1.3.9

    • Bug fixing and activation update

  7. Optimus 1.3.8

    • Bulk optimization feature

  8. Optimus 1.3.7

    • Erhöhung der Limits für alle Formate
    • Limits auf optimus.io

  9. Optimus 1.3.6

    • Neue Option: Keine Optimierung der Originalbilder
    • Korrektur: Löschung der WebP-Bilder im AJAX-Modus

20143 releases

  1. Optimus 1.3.5

    • Erhöhung des Limits für PNG-Dateien auf 512 KB (Optimus HQ)

  2. Optimus 1.3.3

    • Kompatibilität zu WooCommerce
    • Einführung von Optimus HQ PRO

  3. Optimus 1.3.1

    • Anpassung für WordPress 3.9: Sicherstellung der Bildoptimierung im WordPress-Editor

Questions about Optimus’s releases

What is the latest version of Optimus?

1.6.3, released on Mar 2, 2026 (8 months ago). It’s tested up to WordPress 6.9.11 and needs PHP 5.6 or later.

How often is Optimus updated?

One release in the last year. Its first release on WordPress.org dates from April 2014.

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Release dates come from the day each version’s folder was made in Optimus’s WordPress.org SVN repository; the notes from its readme’s changelog, as its authors wrote it.