WebPagetest Reviews

Social recommendations and mentions

• Does anyone else experience pure ecstasy when they get 100 on Lighthouse? 😩

  Webpagetest.org is great, and checking OP's site they have done an incredible job, I don't think I have ever made or seen an Ecom site this slick. Super clean waterfall view. - Source: Reddit / 22 days ago

• Performance scores for Google Lighthouse/Insights seem to be very inaccurate

  Thanks for the recommendation regarding webpagetest.org, another user made a similar recommendation so I will check it out. - Source: Reddit / about 1 month ago

• Performance scores for Google Lighthouse/Insights seem to be very inaccurate

  Thank you, I will check out webpagetest.org, you have a point about tag manager too. - Source: Reddit / about 1 month ago

• Automated Accessibility Checkers

  Starting to make a big push for accessibility at my company and was wondering what kind of tools, websites, or services you all use to catch some of the low hanging fruit with automation? I've used sites like webpagetest.org for performance diagnostics, hoping something similar exists in the accessibility space. Thanks for your insights! - Source: Reddit / about 1 month ago

• Core Web Vitals failing. LCP over 4s (Mobile)

  Use webpagetest.org - it will give you great suggestions on what/how to fix and with the paid version let you test out those ideas to guesstimate impact to your site. Pretty solid. - Source: Reddit / about 1 month ago

• Website speed

  Lighthouse doesn't provide as much info as webpagetest.org where you can look at the waterfall and find out what's slowing things down. - Source: Reddit / 3 months ago

• How to disable lazy loading for above-the-fold images?

  I've also got no experience with that webpagetest.org site, but if it's saying that lazyloading hasn't be removed, then you've either removed it from the wrong place, or its referring to something else, or its using a cached version of the page. You should be able to see for yourself if you open the page and use your browsers dev tools to inspect the slideshow and find if the slides have loading="lazy" on them. - Source: Reddit / 4 months ago

• How to disable lazy loading for above-the-fold images?

  I'm using Sense theme - I figured out that it can be done in the slideshow.liquid - but no idea how. Removing "loading="lazy" from that file doesn't do anything - tested it with webpagetest.org - no changes between before and after. - Source: Reddit / 4 months ago

• How to prioritize LCP

  For webpagetest.org - it's around 3.5s. - Source: Reddit / 4 months ago

• Website review

  Test your site using webpagetest.org. - Source: Reddit / 4 months ago

• What are cons of delaying GTM script and moving it before </body> tag?

  I've used GTMetrix and webpagetest.org along with pagespeed insights. Their results align though GTMetrix shows much better score as it's limited for desktop only. - Source: Reddit / 4 months ago

• Tips to improve GTM performance?

  I also tested with webpagetest.org by blocking googletagmanager.com and speed is improving. So yes, GTM is causing the delay IMO. I'm looking to optimize it as much as possible. - Source: Reddit / 4 months ago

• Need Advice for Server Deployment

  You may take some some on Hetzner and run https://webpagetest.org against it from multiple points of the world and see the differences in TTFB/latency, should be enough for high level estimation. - Source: Reddit / 6 months ago

• Reliable Performance Measurements - What tools to use?

  To get an accurate picture of the load time for your target market I recommend using https://webpagetest.org. - Source: Reddit / 8 months ago

• Fast site but slow GSC response time. What would cause this?

  Did you try to simulate the user experience from a different country using for example webpagetest.org? - Source: Reddit / 8 months ago

• Is this a normal speed result? I'm on the Unlimited 10-day Warp Trial

  If you are truly concerned about interactive responsiveness go to webpagetest.org and try a number of common websites you use under Cricket and USM SIM and compare (ideally around the same time). The data there is unparalleled. You can compare first byte and start render times. I would clear out your browser cache between runs. - Source: Reddit / 8 months ago

• Amazon Lightsail w/ Bitnami Wordpress Image VS Upcloud with WordOPS install

  I tested on Webpagetest.org and UpCloud came in for 2 seconds faster for Full Content Paint. TTFB was the same. - Source: Reddit / 11 months ago

• Useful Tools and Thoughts for Migrating WordPress Content and Configuration

  We can make a web page test (using a tool like WebPageTest or Google's PageSpeed Insights which is also available as a Lighthouse performance audit in our browsers developer tools) before and after activating performance settings. We should see an improvement, often taking our page from an initial slow score indicated in red to a better score in yellow (or, rarely, especially for minimalist sites avoiding stupid... - Source: dev.to / 12 months ago

• Render Blocking CSS

  I would run your site though https://webpagetest.org and see if there are other low hanging fruit that you can fix. Refactoring CSS is typically a pain. - Source: Reddit / 12 months ago

• What parameter indicates I need more CPU, RAM from my WP hosting?

  I got the above from webpagetest.org. - Source: Reddit / about 1 year ago

• WIX mobile speed is SLOW!

  The Google one shows the same results as the WIX speed test and webpagetest.org. Does not seem to be incompatible to me. WIX even talks about PageSpeed Insights on their support page with no mention of it not being compatible. - Source: Reddit / about 1 year ago