WebPagetest Reviews and details

Social recommendations and mentions

• A PageSpeed insight report, but for every page in your domain

  Trust neither. The most optimal option I've found is webpagetest.org Its been quite handy lately. This tool does look interesting. Source: 12 months ago

• How are you all accurately checking your website load time? Not sure PageSpeedInsights is very helpful.

  Webpagetest.org is another. Pagespeedinsights and lighthouse are great for identifying page load issues to fix, but actual page load times will always vary between the user and your web server. Universal analytics has some page load timings but that's going away soon and nothing afaik is in GA4. I've seen an example of building a page load timer in tag manager and dumping the results into an event. Source: about 1 year ago

• Extreme confusing over Speed Index results -- webpagetest.org

  So I am working on rebuilding our company's site with a new stack. I am running tests using webpagetest.org, and I am having trouble fully understanding the speed index results as well as the film strip view. The page renders quite fast everywhere I test it. Google Lighthouse shows it in the 90s + for performance score, however when I test the page on webpagetest, I get load times of 77 seconds (NOT MS) which is... Source: about 1 year ago

• 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: about 1 year 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: about 1 year 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: about 1 year 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: about 1 year 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: about 1 year 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: over 1 year 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: over 1 year 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: over 1 year ago

• How to prioritize LCP

  For webpagetest.org - it's around 3.5s. Source: over 1 year ago

• Website review

  Test your site using webpagetest.org. Source: over 1 year 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: over 1 year 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: over 1 year 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: over 1 year 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: over 1 year 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: almost 2 years 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: almost 2 years 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: about 2 years 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 / about 2 years ago