In Browser Image Compression


IBIC (In Browser Image Compression) compresses your images in your browser.

Useful for websites on shared hosting where no extra image libraries can be installed.

Why should you reduce images file size:

  • faster page load
  • improve your SEO (Search Engine Optimization)


I can’t see the image compression progress in the Media section

Please check that there is no error in the IBIC plugin section of the Site Health page:


  • The media compression status page


  1. Activate the plugin through the ‘Plugins’ menu in WordPress
  2. Upload images
  3. Enjoy!

You can check the image compression progress in the Media section.


How does it work?

Once you upload an image, the image will be optimized in the background.
Then this optimized image will be uploaded on the server.
Finally, URL rewriting will be used to serve the optimized image on your site.

What browsers are supported?

An up-to-date browser (Chrome, Firefox, Safari and Edge) is required in the admin to compress the uploaded images.
On your public website, webp image could be served for browsers that support this format, otherwise an optimized jpg / png image will be used instead.

What images formats are supported?

jpg and png are supported and will be optimized.


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“In Browser Image Compression” 是一個開源的軟體。以下的人對這個外掛作出了貢獻。


In Browser Image Compression 外掛目前已有 1 個本地化語言版本。 感謝所有譯者為這個外掛做出的貢獻。

將 In Browser Image Compression 外掛本地化為台灣繁體中文版。


任何人均可瀏覽程式碼、查看 SVN 存放庫,或透過 RSS 訂閱開發記錄



  • The media compression status page now displays the remaining images to be compressed
  • Add loading state to the image compression status list


  • Improve error management
  • New interface to check image compression status (Medias > Image compression)


  • First release