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In-Depth Metrics. Dive into the anatomy of your webpage with components like DNS, TCP, TLS, and more. Run a free website speed test from around the globe using real browsers at consumer connection speeds with detailed optimization recommendations.
- Opportunities & Experiments
Actionable Suggestions. When a site’s not right, it’s hard...
- API
We currently support the following: - WebPageTest API...
- Carbon Control (NEW)
Carbon Control (NEW) - WebPageTest - Website Performance and...
- Events
Aug 23rd, WebPageTest's very own Henri Helvetica joins *This...
- Forums
Learn, share insights and get involved in the WebPageTest...
- About
Catchpoint's 2020 acquisition of WebPageTest, created and...
- Visual Comparison
Visual Comparison - WebPageTest - Website Performance and...
- Traceroute
Traceroute - WebPageTest - Website Performance and...
- Opportunities & Experiments
Running the test will give you the top level scores for all the categories Lighthouse runs on, as well as individual level reports. Run a free website speed test from around the globe using real browsers at consumer connection speeds with detailed optimization recommendations.
WebPageTest is a free online tool that lets you measure and analyze the performance of your web pages on different devices and locations. You can also learn about web performance best practices and see what's new in the latest updates.
- Keep-Alive Enabled
- Compress Text
- Compress Images
- Cache Static Content
- Use of CDN
- GeneratedCaptionsTabForHeroSec
Each request for a piece of content on the page (image, javascript, css, flash, etc) needs to be made over a connection to the web server. Setting up new connections can take a lot of time so it is best to re-use connections when you can and keep-alive is the way that is done. They are enabled by default on most configurations and are part of the H...
Just about everything on a page that isn't an image or video is text of some kind (html, javascript, css). Text compresses really well and HTTP provides a way to transfer the files in compressed form. Enabling compression for text resources is usually just a server configuration change without requiring any changes to the page itself and can both i...
The image compression check just looks at photo images (JPEG files) and makes sure the quality isn't set too high. JPEG images can usually be compressed pretty substantially without any noticeable reduction in visual quality. We use a standard of compressing the images at a quality level of "50" in Photoshop's "Save for Web" mode but generally you ...
Static Content are the pieces of content on your page that don't change frequently (images, javascript, css). You can configure them so that the user's browser will store them in a cache so if the user comes back to the page (or visits another page that uses the same file) they can just use the copy they already have instead of requesting the file ...
Each request for a piece of content to the web server has to travel from the user's browser all the way to the server and back. As you get further and further from the server this can become a significant amount of time (which adds up quickly as there are more requests on the page). Ultimately the time it takes is limited by the speed of light so t...
Learn how to use WebPageTest to measure and analyze the performance of web pages. Follow the steps to enter a page URL, select a location and a browser, and interpret the results.
May 12, 2023 · WebPageTest is a free, open-source tool that helps you monitor and improve your website's performance. Learn how to use it, interpret the results, and compare it with other services.
How To Perform An Image Analysis using WebPageTest And Supported Integration.
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Learn about the features and benefits of WebPageTest Pro, a premium subscription plan for WebPageTest, a web performance testing tool. Find answers to common questions about testing options, locations, metrics, experiments, API, and more.
