Hi everyone,
I am struggling hard with optimizing my client websites for the Core vitals based on very unsatisfactory page speed results.
I’ve read and watched a ton of videos, and optimized everything that I could (delays, font swaps, image formats, sizing, async/deffer..), and the performance score actually only decreased which is suuuper frustrating.
I am aware that a lot of the extra code comes from like google tag manager, weglot, etc. However at this time and point they wanna keep it all. Is there any way to defer those?
I’d be really grateful if anyone has suggestions on how to pass Core Web Vitals and boost the website’s performance because I am losing hope a little.
Any advice/tips on how to improve this?
Here is my site Read-Only: Webflow - RobosizeME
Hi @Sandra_Hurkova
I completely understand—optimizing for Core Web Vitals can feel like a never-ending challenge, especially when you’ve already implemented best practices and are still seeing mixed results. Let’s break down a few more fine-tuning strategies that might help:
Defer Non-Essential Code (e.g., Google Tag Manager, Weglot)
Third-party scripts like Google Tag Manager and Weglot can significantly impact performance if they block rendering.
- Add the async or defer attribute to non-critical scripts to ensure they load after the main content:
Image Optimization
Since you’ve already compressed your images, double-check that you are serving WebP format correctly on all devices. Also:
Implement lazy loading for images that are not immediately visible (below the fold).
Use responsive images with the srcset attribute to ensure optimal image sizes on different devices.
Font Optimization
If you’ve addressed font swapping, consider preloading critical fonts to minimize rendering delays:
After appying these changes on the website, check your site’s performance again to check the impact on Google’s Core Web Vitals like LCP, CLS, etc.. and get more actionable suggestions.
Alternative, if you do not want to invest much time on optimizing yourself, you can try our speed optimization tool called Website Speedy that comes with 14 days trial. It will do the optimization automatically for you.
(Disclaimer: We are the developer of this tool and are happy to answer any questions you may have.)