Optimization of website speed and Core Web Vitals on Yii2 (desktop + mobile version)
601 USD 
We have a website built on the Yii2 framework that requires technical optimization in accordance with modern Google Core Web Vitals requirements.
The website is already operational, has a responsive design, and is used as an online store.
Tasks:
Conduct an audit of the website pages from the perspective of Core Web Vitals (mobile and desktop versions).
Identify critical bottlenecks affecting the indicators:
slow first screen loading;
large or unoptimized images;
blocking CSS/JS;
high TTFB;
other technical delays.
Optimize key Web Vitals metrics, including:
LCP (Largest Contentful Paint)
FCP (First Contentful Paint)
TTFB (Time to First Byte)
INP (Interaction to Next Paint)
CLS (Cumulative Layout Shift)
Speed Index
Configure or improve:
lazy loading;
critical CSS;
deferred script loading;
caching;
compression (gzip, brotli);
Nginx configuration (if needed);
CDN (if recommended).
Technical conditions:
Framework: Yii2 (custom development)
Frontend: custom HTML/CSS/JS layout, Bootstrap
Server: VPS, Ubuntu + Nginx
CMS: custom-built (not WordPress)
Expected result:
The website passes Google Core Web Vitals check based on field data
Significant improvement in speed on mobile and desktop
A technical report with a list of completed works is provided
Additional:
Preference for candidates with experience in optimizing e-commerce sites on Yii2
When submitting an application, please specify examples of successful optimized projects.
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