Too many pixels for the job.
Reduce source dimensions proportionally with maximum width and height limits. Resize can also use an optional file-size target.
Resize & optimize WordPress images
Oversized uploads need a smaller future.
Set dimension limits, reduce supported images individually or in bulk, and use image optimization to work on file weight inside WordPress.
Built with love for
- Individual and bulk image resizing
- Optional rules for new uploads
- Measured optimization results
Different problems. Related tools.
A large image can be large in two ways.
Choose the operation around the file you have and the result you need.
Useful dimensions. Heavy file.
Optimize selected image sizes while retaining their dimensions. Check the measured file saving for the actual result.
The next upload starts it again.
Enable automatic resize rules for supported new uploads, so the same dimensional limits do not depend on another manual pass.
Your image-budget workflow
Set the limits. Process deliberately. Check the result.
Work through existing images, then decide what should happen to future uploads.
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Identify the files worth reviewing.
Scan the library with Media Insights to see measured image sizes and the largest files. Use that information to choose the next image or group to work on.
Media Insights
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Resize or optimize the selected images.
Use Resize for proportional dimensional reduction, or Optimize for file weight at the existing dimensions. Bulk jobs provide progress, pause and resume controls, and a history.
Resize Images and Optimize Images
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Decide your future upload rules.
Set and deliberately enable upload-resize limits where they suit the site. Check server support before adding optional WebP or AVIF file generation.
Automatic Upload Resizing
Resize reduces stored originals and editor backups too, without keeping a high-resolution undo copy. Keep a separate backup when you need the full-resolution source.
In practice
Treat the photo archive and the next upload differently.
A useful file policy covers existing material and the way new images arrive.
Reduce oversized sources with a clear limit.
Choose maximum dimensions for supported images and apply them to an individual image or a bulk selection. Existing thumbnail files stay unchanged during Resize. Future crops and regenerated variants will depend on the smaller source you have chosen to keep.
Keep the source resolution you will need.
Before reducing an archive, consider the largest future placement you expect to support. Resize also reduces stored originals and editor backups, so save an independent full-resolution copy when that source may be needed for later layouts.
Measure the compression result.
Optimize selected sizes and review the measured file saving. Eligible optimization backups can restore those optimized files. That restore applies to optimization work; it does not reverse a separate Resize or Replace operation.
Separate file savings from backup storage.
Read the measured saving as the change to the processed image files. Optimization backups also take space. Decide what matters for this job, such as the file used on a page, rather than treating compression as automatic library cleanup.
A few useful answers
Before you start
What is the difference between Resize and Optimize?
Resize reduces dimensions proportionally and can apply an optional byte limit. Optimize works on file weight for selected image sizes while keeping their dimensions. Neither guarantees a fixed saving.
Can I restore full-resolution originals after Resize?
Resize also reduces stored originals and editor backups. It does not retain a high-resolution undo copy, so keep an independent backup before using it when the original resolution matters.
Will WebP and AVIF automatically appear on my pages?
No. MediaToolkit can generate additional format files when your server supports the required encoders. Automatic front-end delivery, CDN routing, and picture markup are not included.
Are cloud optimization credits included?
No. Provider adapters require your own account and credentials with the relevant service. Local optimization is available separately; provider credits are not part of your MediaToolkit subscription.
Can it always reach my chosen file-size limit?
No. The source, format, processing support, and minimum dimensions can make a target unreachable. An unsuccessful target is reported rather than a guaranteed reduction being promised.
Related workflows: Library organization · Image sizes and regeneration.
Yearly plans. Resize, Optimize, and Media Insights.