LCP optimisation
Prioritise the largest above-the-fold element — images, video posters, and server response — with preloads, CDN delivery, and TTFB reduction.
Core Web Vitals fix service
Fix Core Web Vitals issues that hurt SEO and user experience
Failing LCP, INP, or CLS in Search Console? We connect field data to concrete front-end and hosting changes — not another generic performance report.
When Core Web Vitals fail, Google has a clear signal that your pages feel slow or unstable to real users.
LCP, INP, and CLS fixes with before and after measurement.
What failing Core Web Vitals mean for your business
Core Web Vitals measure loading (LCP), interactivity (INP), and visual stability (CLS). Poor scores mean visitors see late content, sluggish taps, and layout jumps.
Those friction points increase bounce rate and can suppress organic performance when competitors pass the threshold.
- LCP problems often trace to hero images, fonts, or slow TTFB
- INP issues come from heavy JavaScript and long main-thread tasks
- CLS spikes from ads, embeds, and images without dimensions
- Mobile networks amplify every millisecond of delay
Core Web Vitals fixes we deliver
Metric-specific workstreams with clear acceptance criteria.
INP optimisation
Reduce input delay by splitting long tasks, deferring non-critical JavaScript, and profiling expensive event listeners.
CLS fix
Reserve space for media, ads, and embeds; stabilise fonts and dynamic UI injections that shift content after initial paint.
JavaScript reduction
Defer non-critical scripts and cut third-party tags that delay interactivity and inflate main-thread work.
Core Web Vitals monitoring
Ongoing checks after fixes so regressions from new releases or campaigns are caught before they affect field data.
Image optimisation
Compress, resize, and serve modern formats so hero and content images load fast enough to pass LCP thresholds.
Font optimisation
Subset fonts, preload critical faces, and avoid layout shift from late-loading text that triggers CLS.
Server response time
Reduce TTFB through caching, hosting improvements, and CDN configuration — because LCP cannot pass if the server is slow.
Before & after results
Representative outcomes from optimization projects. Your results depend on stack and traffic.
Marketplace homepage
Before
LCP fail
After
LCP pass
Preload and responsive hero image
News site
Before
INP 450ms
After
INP 180ms
Ad slot scheduling and script deferral
Retail landing
Before
CLS 0.22
After
CLS 0.04
Dimension attributes on embeds and images
How Loadzen helps you get faster
- 1
Audit
We run a deep speed and Core Web Vitals audit on your key templates — home, collection, product, and checkout where relevant. Every issue is ranked by its impact on real user experience and revenue.
- 2
Optimisation
We implement prioritised fixes: images, scripts, caching, and theme or app bloat — focused on revenue pages first. Each change is tested in staging and measured against a baseline.
- 3
Monitoring
You get ongoing checks so regressions from new apps, themes, or campaigns are caught before they hurt SEO and sales. Alerts fire when scores drop below your target threshold.
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Frequently asked questions
Straight answers about timelines, risk, and what to expect.
- What is a Core Web Vitals fix service?
- It is end-to-end help to move LCP, INP, and CLS from 'needs improvement' or 'poor' to 'good' in field data — not just lab snapshots.
- How long does it take to improve Core Web Vitals?
- Some LCP and CLS fixes ship in days. INP often needs deeper JavaScript work over several weeks, especially on app-heavy sites.
- Will fixing Core Web Vitals improve SEO?
- Passing CWV removes a negative experience signal. Combined with strong content and links, faster pages compete more effectively in search.
- Do you only work on one metric at a time?
- We prioritise the worst metric per template, but the plan usually addresses shared root causes — images, scripts, and fonts together.
- Can Loadzen monitor Core Web Vitals after fixes?
- Pro plans include ongoing checks so new releases do not silently regress the metrics you fixed.
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Run a free test to see LCP, INP, and CLS status. We will recommend the right service path for your stack.