Why is the site loading slowly: 7 typical causes
Site loads slowly for 7 typical reasons: heavy unoptimized images (main cause in 60% of cases), bad hosting (slow TTFB), too many third-party scripts (analytics, chats, ads), no caching, unoptimized CSS/JS, slow database, no CDN. Diagnosis: run PageSpeed Insights — it shows exact causes and lists slow resources.
Site loads slowly for 7 typical reasons, and 60% of the time it's heavy images. First diagnose via PageSpeed Insights — it shows exact causes.
7 causes
- Heavy unoptimized images (60% of cases).
- Bad hosting (high TTFB).
- Third-party scripts (analytics, chats, ads).
- No caching.
- Unoptimized CSS/JS.
- Slow database queries.
- No CDN.
Step by step
- PageSpeed Insights → identify cause.
- "Opportunities" → specific issues.
- Fix top 3 (usually: images + cache + hosting).
- Re-test, iterate.
This question is also asked as:
- •why is my website slow
- •site loading slow reasons
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