: the only free Image Optimizer & compress plugin


O Otimizador de Imagens permite usar um sistema de otimização de imagens baseado na API O oferece uma redução de tamanho nas imagens baseada em vários algoritmos avançados. A API aceita arquivos JPG, PNG e GIF de até 5MB.

This plugin includes a bulk operation to optimize all your pictures in 2 clicks ! Change your image optimization level to fit your needs !
This service is used by more than **400,000php websites on different CMS (WordPress, Drupal, Joomla, Magento, Prestashop…).

O plugin também inclui uma opção para excluir algumas imagens do processo de otimização.

Desde agosto de 2016 o permite otimizar imagens de até 5MB, de graça!

Imagens de tela

  • Interface simples


  1. Envie resmushit-image-optimizer para o diretório /wp-content/plugins/.
  2. Ative o plugin no menu Plugins do painel do WordPress.
  3. Todas suas novas imagens serão automaticamente otimizadas!


O quão magnífico é o

Since we’ve optimized more than 15,000,000,000 pictures, we’ve risen new skills. Our service is still in development to bring you new crazy functionalities.

What about WebP and next generation image formats ?

We’re working on a new offer to bring you the best of these new features. Please be patient, it will come soon 🙂

Há um recurso para “otimizar ao carregar”?

Absolutamente, este recurso é ativado para todas as novas imagens a serem enviadas e pode ser desativado à vontade.

Posso usar o CRON?

Sim, para grande (ou mesmo pequenas) bibliotecas de mídia, você pode otimizar suas imagens usando cron jobs.

Posso escolher o nível de otimização?

Sim, por padrão, o nível de otimização é ajustado para 92. Mas você pode otimizar mais suas imagens reduzindo este nível.

Posso trazer de volta minhas imagens originais?

Sim, excluindo ou revertendo esse recurso você terá sua imagem original disponível.

É possível excluir algumas imagens do processo?

Sim, desde a versão 0.1.2, você pode excluir uma imagem do otimizador facilmente.

Tenho o risco de perder minhas imagens existentes?

Não! o cria uma cópia das imagens originais e fará a redução sobre as cópias.

É grátis?

Claro! Absolutamente grátis! A única restrição é poder enviar imagens com no máximo 5MB.


27 julho, 2023
Very nice plugin for optimization!I propose to make support for converting images to WebP format.It would also be nice to increase the speed of image processing.Thank you!
29 agosto, 2022
Unfortunately I had a lot of problems with Even running it on a fairly new and clean website with few other plugins. 1. constantly had problems connecting to a server. 2. When I tried uploading an image I sometimes had to wait for minutes before smushed it. I don't know whether it had anything to do with the server connection issue. 3. When I tried to recreate all images it broke the site after which I had to install the site from a backup. The fact that there is an admin notice saying to backup the whole site before doing that only means that this is a common issue. All in all I had very bad experience with the plugin and I don't recommend it to anyone.
23 julho, 2022
It is free but I would recommend using a different one. Impossible to restore images No support No documentation on how to restore. Would look somewhere else
Leia todas as 131 avaliações

Colaboradores e desenvolvedores

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Registro de alterações


  • Patreon new message


  • Patreon display message 🙁


  • Missing image


  • Partnership with Shortpixel
  • fix crash bug when uploading non Image document in library (while log enabled)


  • Compatibility with WP 6.1.0
  • Compatible with PHP 8.1.X
  • Fixed issue on Undefined array key “file” in …/resmushit.php on line 114


  • Incorrect library imported (fix PHP Fatal error: Uncaught Error: Undefined constant “SECURE_AUTH_COOKIE” in /wp-includes/pluggable.php:923)


  • Security fixes : CSRF protection for Ajax Calls


  • Security fixes : protection in a WP’s way


  • Security fixes : prevent XSS breachs


  • Avoid SSL verifications if certificate of remote endpoints fails.
  • Security fixes : escape POST, and admin user check for AJAX requests


  • Compatibility with WP 6.0.1
  • Security fix issues (
    • force int to ID in some SQL requests
    • check that user is connected as admin/contributor for AJAX actions
    • Message to indicate that there’s no collection of data in contacting remote feed service


  • Compatibility with PHP8+WP 5.8.2


  • Official support of WP-CLI
  • Fix cron context optimization


  • New option to restore all original pictures


  • Fix : Default value assignment
  • Test on WP 5.7.1


  • Fix : Optimize button not working when creating a new post
  • Fix : Default value of variables incorrectly initialized
  • Test on WP 5.5.1


  • hotfix : deprecated function used


  • Fix : OWASP & Security fix


  • Fix : Fix warning in variable not set (metadata)
  • Fix : Add an extension uppercase check


  • Fix : CSS+JS load on every admin page, now restricted to pages & medias
  • Fix : Links verification format for admin menu


  • Fix : cron multiple run issue.


  • New header image, new WP description for plugin page.


  • Issue in version number


  • Fix double cron launch. Timeout added
  • Fix “Reduce by 0 (0 saved)” message if statistics are disabled
  • Return error if attachment file not found on disk


  • Fix variable check (generate notice)


  • Fix log write (permission issue)
  • Fix “Reduce by 0 (0 saved)” error. Optimize single attachment while “Optimize on upload” is disabled


  • Add Backup deletion option
  • Add script to delete old backups
  • Changed JS inclusion


  • Add Preserve Exif Feature


  • Fix issue on SQL request for table prefix different from ‘wp_’


  • Version number issue


  • Fix settings automatically reinitialized.


  • Complete French translation
  • Plugin translation fix


  • Add CRON feature
  • Code refactoring
  • Fix issue for big Media library, with a limitation while fetching attachments
  • Fix log path issues


  • Add Settings link to Plugin page
  • Limit options to image attachments only
  • Fix RESMUSHIT_QLTY is not defined


  • Fix on attachment metadata incorrectly returned (will fix issues with other media libraries)


  • WordPress 5.0 compatibility


  • Fix PHP errors with PHP 7.2
  • Code refacto


  • Fix JS on “Optimize” button for a single picture
  • Provide a new “Force Optimization” for a single picture


  • Avoid filesize () : stat failed errors if a picture file is missing
  • Log check file permissions
  • Check extensions on upload (avoid using API if it’s not a picture)
  • Increase API Timeout for big pictures (10 secs)


  • Fix bug (non-working optimization) on bulk upload when “Optimize on upload” isn’t selected
  • New header banner for 4 billionth images optimized


  • Add correction for allow_url_fopen support
  • News feed loaded from a SSL URL


  • Log rotate if file too big


  • Tested up to WordPress 4.9.5
  • New contributor (resmushit)
  • Translation completion


  • Tested up to WordPress 4.9.1
  • New header banner for 3 billionth images optimized 🙂


  • Tested up to WordPress 4.8.1


  • New header banner for 2 billionth images optimized 🙂


  • Slovak translation fix


  • Slovak translation fix


  • Italian translation added (thanks to Cristian R.)
  • Description minor correction


  • Slovak translation added (thanks to Martin S.)


  • Bug fix when images uploaded > 5MB
  • List of files above 5MB
  • Translation minor corrections


  • Error management if webservice not reachable
  • Filesize limitation increased from 2MB to 5MB


  • CSS Fixes


  • Translation correction
  • News feed images correction


  • Delete also original file when deleting an attachment
  • Exclusion of an attachment of the optimization (checkboxes)
  • Adding french translation
  • Code optimizations
  • 4.6.x check
  • Minor bugs corrections


  • Optimize on upload
  • Statistics
  • Log services
  • Interface rebuild
  • News feed from


  • plugin base
  • bulk optimizer