Ensure SharePoint pages can be easily viewed by using the Page performance tool. When publishing or republishing your page, run a performance test and and learn about page improvements. As page health improves, so does page performance and the viewing experience.

  1. When publishing or republishing, select Run test

  2. Review test results and make improvements where applicable

  3. Rerun the performance test to ensure issues have been resolved

Page performance rules

Rule

Rule description

Web parts using iFrames

Use images instead of iFrames. Learn more

Image size

Use images smaller than 400 KB. Learn more

Web part weight

Use web parts smaller than 500 KB. Learn more

Page weight

Keep page weight smaller than 1024 KB. Learn more

Rule details and solutions

When using iFrames (such as a link to a video on YouTube, a files that's located in a different document library than the site, etc.) the page load time will slow down because it takes SharePoint longer to retrieve the content. Avoid using iFrames where possible. If you must use an iFrame, learn more in best practices.

Improvement message: This page contains one or more iFrames. iFrames slow page performance because content is loading from an external source. Use images instead of iFrames whenever possible.

Best practices:

  • Best practice, tips, and more information

  • Best practice, tips, and more information

  • Best practice, tips, and more information

Large images take longer to display on pages. Use images smaller than 400 KB to ensure they don't impact the viewing experience. 

Improvement opportunity: This page contains {0} image(s) larger than {0} KB. Reduce images on this page to less than {0} KB.

Best practices:

  • Best practice, tips, and more information

  • Best practice, tips, and more information

  • Best practice, tips, and more information

Large images take longer to display on pages. 

Improvement opportunity: This page contains {0} image(s) larger than {0} KB. Reduce images on this page to less than {0} KB.

Best practices:

  • Best practice, tips, and more information

  • Best practice, tips, and more information

  • Best practice, tips, and more information

Large images take longer to display on pages. 

Improvement opportunity: This page contains {0} image(s) larger than {0} KB. Reduce images on this page to less than {0} KB.

Best practices:

  • Best practice, tips, and more information

  • Best practice, tips, and more information

  • Best practice, tips, and more information

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