Why Your Website Feels Slow

A slow website can have several causes: large images, render-blocking assets, expensive scripts, slow server responses or third-party services. The experience may also differ between a fast desktop connection and a mobile device.

Measure before changing things. Use browser performance tools and real-user data where available to identify whether the delay happens before the first response, during rendering or after the page becomes interactive. Check the pages and tasks users care about most.

Optimize the source of the delay. That may mean resizing images, loading nonessential code later, reducing expensive work, improving caching or investigating database and server behavior. Avoid adding optimization layers without evidence that they address the bottleneck.

Recheck the same measurements after changes and test on representative devices and connections. Performance work is most useful when it improves a meaningful user task and stays healthy as the product changes.

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