Este plugin no se ha probado con las últimas 3 versiones mayores de WordPress. Puede que ya no tenga soporte ni lo mantenga nadie, o puede que tenga problemas de compatibilidad cuando se usa con las versiones más recientes de WordPress.

Specify Image Dimensions


Specify Image Dimensions is a plugin that scans and inserts missing width and height in all <img> tags. Specifying the dimension allows for faster rendering by eliminating the need for unnecessary re-flows and repaints. This is particularly helpful with website speed tools such as GTmetrix and Google’s PageSpeed.


<img src="" title="Some Title" />
<img src="" class="svg" />
<img src="" />


<img src="" title"Some Title" width="100" height="25" />
<img src="" class="svg" width="100%" height="auto" />
<img src="" width="100%" height="auto" />

Contribute on GitHub

Want to help improve this plugin? Head over to our GitHub page


  • Before and after result using the Specify Image Dimensions plugin from GTmetrix report.


  1. Upload the plugin to the /wp-content/plugins/ directory.
  2. Activate the plugin through the Plugins menu in WordPress.
  3. Let it settle in a for a minute and be amazed.

If there are any issues or questions, head over to our FAQ or our Support page.

Preguntas frecuentes

How does it work?

The plugin will scan the contents in your posts and automagically specify the image dimensions by adding the correct width and height.

Why is this important?

Specifying a width and height for all images allows for faster rendering by eliminating the need for unnecessary re-flows and repaints. This is particularly helpful with website speed tools such as GTmetrix and Google’s PageSpeed. More information can be found here.

I’d like to contribute to this plugin and help improve it

That’s easy! If you have a GitHub account, you’re more than welcome to share your contribution to our plugin which can be found here.


15 de mayo de 2021 1 respuesta
writing this in 2021 and this plug-in is still working amazingly. I actually installed the other one that was specified missing image dimmensions. the plug-in had much more features but it broke any side I put it on and it was recently updated. This one is five years old and it still works amazing!
1 de noviembre de 2017
I installed this plugin to improve SEO. I needed to make some CSS adjustment on my website and it’s all working fine. Amazing plugin! Thx a lot
3 de septiembre de 2016 1 respuesta
Great support this wasn’t working at first for me and they were able to help me get it working, the problem was actually another plugin i had installed. Support responds quickly and is very helpful. This plugin is wonderful and does exactly what it says it does. I was looking for a long time for a plugin like this one glad they made it awesome work guys.
3 de septiembre de 2016 1 respuesta
I am using a lot of images on my website, always in tests I can look the problem with missing images size. But not a problem now!! Thanks
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Colaboradores y desarrolladores

«Specify Image Dimensions» es un software de código abierto. Las siguientes personas han colaborado con este plugin.


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Registro de cambios


* Fix: images with blank dimensions weren’t being detected
* Added support for additional img attributes

=1.0.4 =
* Fix: SVG and webP images were given 0 width and height
* Various code improvements


  • 2016-09-01
  • Fix: Thumbnail weren’t showing up in Pages
  • Renamed plugin file from index.php to specify-image-dimensions.php


  • 2016-08-25
  • Fix: Thumbnails weren’t showing in the Media library (thanks ramonjosegn)


  • 2016-08-24
  • Fix: Image dimensions were not being set


  • 2016-08-21
  • Initial release, huzzah!