Topic website lighthouse performance#7041
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Add preconnect hints for code.jquery.com and unpkg.com, the two origins serving scripts in <head>, so the connection handshake overlaps with HTML parsing instead of starting only when the script tag is reached. Also defer the medium-zoom library script; its invocation code already runs on defer, so execution order is unchanged. Signed-off-by: Vanshika <pahalvanshikaa@gmail.com>
The CNCF logo is always below the fold, so deferring its fetch with loading="lazy" removes it from the set of resources competing for bandwidth during initial page load. Signed-off-by: Vanshika <pahalvanshikaa@gmail.com>
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What this PR does
This PR improves the PipeCD website's Lighthouse Performance score by implementing a focused set of low-risk performance optimizations without changing the website's appearance or functionality.
Specifically, it:
preconnecthints for external origins serving scripts (code.jquery.comandunpkg.com) to reduce connection setup time.medium-zoomlibrary to eliminate a render-blocking resource while preserving the existing execution order.loading="lazy"to the homepage core-value images.loading="lazy"to the footer CNCF logo.These changes are intentionally limited to performance improvements and do not overlap with the existing SEO or accessibility PRs.
Why we need it
A Lighthouse audit identified several opportunities to improve the website's performance.
This PR addresses a subset of those recommendations by:
Which issue(s) this PR fixes
Fixes #7019
Does this PR introduce a user-facing change?
Yes.
How are users affected by this change:
Is this breaking change:
How to migrate (if breaking change):