Title: Optimization doesn’t affect mobile site Last modified: April 6, 2020 --- # Optimization doesn’t affect mobile site * Resolved [momossa](https://wordpress.org/support/users/momossa/) * (@momossa) * [6 years, 1 month ago](https://wordpress.org/support/topic/optimization-doesnt-affect-mobile-site/) * Hi, I tried multiple combinations to optimize the site based on the GTmatrix recommendations using Hummingbird plugin, but whatever I do, is affecting the desktop site only. For example, one recommendation for the mobile site was Defer Parsing of JavaScript and they listed all the scripts that block page rendering. I selected all of them, one at a time, and set the Force-load-after-page-is-loaded option. Every time I run the test again, the same URL I optimized is still showing in the list for the mobile site, however, the performance is improving on desktop site. * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Foptimization-doesnt-affect-mobile-site%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 4 replies - 1 through 4 (of 4 total) * Plugin Support [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * (@wpmudev-support2) * [6 years, 1 month ago](https://wordpress.org/support/topic/optimization-doesnt-affect-mobile-site/#post-12638711) * Hello [@momossa](https://wordpress.org/support/users/momossa/) , * I checked your site in [https://developers.google.com/](https://developers.google.com/) and it doesn’t show that Render Blocking resources are the main problem for the mobile view. There are other pointers that are marked as red, so you should try to solve them first. * kind regards, Kasia * Thread Starter [momossa](https://wordpress.org/support/users/momossa/) * (@momossa) * [6 years, 1 month ago](https://wordpress.org/support/topic/optimization-doesnt-affect-mobile-site/#post-12639196) * I just run the test again, which ones you are referring to ? * Estimated Savings Remove unused CSS 0.9 s Eliminate render-blocking resources 0.15 s Defer offscreen images 0.15 s Reduce server response times (TTFB) 0.07 s * Diagnostics – More information about the performance of your application. These numbers don’t directly affect the Performance score. Ensure text remains visible during webfont load Reduce the impact of third-party code Third-party code blocked the main thread for 320 ms Serve static assets with an efficient cache policy 24 resources found * Minimize main-thread work 4.4 s Reduce JavaScript execution time 1.7 s Avoid an excessive DOM size 932 elements * Plugin Support [Saurabh – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support7/) * (@wpmudev-support7) * [6 years, 1 month ago](https://wordpress.org/support/topic/optimization-doesnt-affect-mobile-site/#post-12647354) * Hello [@momossa](https://wordpress.org/support/users/momossa/), * You will have to work on each of the cases one by one. * To Defer Offscreen images, you will need to turn on lazyloading for the images. Though you can use any of the image optimisation plugins for the same, I would suggest you use the [Smush – Compress, Optimize and Lazy Load Images](https://wordpress.org/plugins/wp-smushit/) for the same. This should resolve the differ offscreen images issue. * Now to eliminate render-blocking resources you will need to only load resources which are critical and are needed to load the site. There is a need to combine, inline and moving the CSS to footer wherever possible. You can do the same from the Asset Optimisation section of the Hummingbird plugin. To work on the assets, take a backup of the site just in case something is broken 1. Go to Hummingbird Pro -> Asset Optimization. 2. you will find 4 options against each file: minify, combine, move to the footer , inline CSS. 3. You have to click on one file one option at a time then click save changes. 4. Go-to site and check if everything is fine on the site or not, if all good go to next file choose the one option and repeat This is more of the trial and error process. This process and assets differ from each site depending on the content theme and plugin used on the site. Sometimes moving an Important file/asset to the footer might break the layout of the site. So you need to undo the optimization on for the file. Please take a FULL backup of the site. It is a more of Fine-tuning process and might a take while to achieve the best results. * Now the last part is the TTFB. TTFB is Time taken to load the FIrst byte on the site. Now there are too many factors which are to be considered while working on the TTFB * 1. Server issue 2. Caching not configured properly 3. Multiple caching plugins 4. not using image and Asset CDN’s 5. Too many plugins or Some plugins taking a bit of time to reply. * Please check on the above points and let me know if things for you and also let me know if you need further help in reference to anything specific from the above reply and I would be happy to help. * Regards, Prathamesh Palve - This reply was modified 6 years, 1 month ago by [Saurabh - WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support7/). * Plugin Support [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * (@wpmudev-support9) * [6 years ago](https://wordpress.org/support/topic/optimization-doesnt-affect-mobile-site/#post-12744604) * Hello [@momossa](https://wordpress.org/support/users/momossa/) * I hope you are doing well! * We haven’t heard back from you for a while now so we’ve marked this ticket as resolved. If you do have any followup questions or require further assistance feel free to reopen it and let us know here. * Kind regards, Nastia Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘Optimization doesn’t affect mobile site’ is closed to new replies. * ![](https://ps.w.org/hummingbird-performance/assets/icon-256x256.gif?rev=2633221) * [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN](https://wordpress.org/plugins/hummingbird-performance/) * [Frequently Asked Questions](https://wordpress.org/plugins/hummingbird-performance/#faq) * [Support Threads](https://wordpress.org/support/plugin/hummingbird-performance/) * [Active Topics](https://wordpress.org/support/plugin/hummingbird-performance/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/hummingbird-performance/unresolved/) * [Reviews](https://wordpress.org/support/plugin/hummingbird-performance/reviews/) ## Tags * [gtmetrix](https://wordpress.org/support/topic-tag/gtmetrix/) * [minify css](https://wordpress.org/support/topic-tag/minify-css/) * [minify js](https://wordpress.org/support/topic-tag/minify-js/) * [page rendering](https://wordpress.org/support/topic-tag/page-rendering/) * 4 replies * 4 participants * Last reply from: [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * Last activity: [6 years ago](https://wordpress.org/support/topic/optimization-doesnt-affect-mobile-site/#post-12744604) * Status: resolved