How to Fix High LCP Score (Step-by-Step)

High LCP Score is one of the most common — and most misdiagnosed — issues we see in audits. The good news: it's almost always fixable in under an afternoon, once you know exactly what to look for.

This guide walks through how to identify high LCP score, what causes it, and the verified fixes that work in 2026 — broken down in the order you should try them.

What Causes High LCP Score?

High LCP Score usually comes from one of three sources:

Configuration drift — settings that were correct once but broke during a deploy or theme update
Template-level bug — the issue affects every page that shares a template, not just one
Third-party interference — a plugin, CDN, or external service silently introduced the problem

High LCP Score diagnosis workflow on a development screen

How to Diagnose High LCP Score

Before fixing anything, confirm the scope. Run these three checks:

Crawl the site. A free atlookup audit will tell you how many pages have high LCP score and which templates they share.
Check Search Console. Look for related coverage warnings, performance drops, or mobile usability flags.
Spot-check three different page types. Confirm whether high LCP score is site-wide or template-specific.

The key is identifying the template pattern. Fixing 100 individual pages takes a week; fixing the template once takes an hour and resolves all 100.

Step-by-Step: How to Fix High LCP Score

Apply these in order. Each step takes 5–30 minutes and resolves the most common cause first.

Step 1 — Confirm the scope

Run a full crawl. Note exactly how many URLs are affected and which templates they belong to. Fix the template, not the symptoms.

Step 2 — Check the source

Inspect the rendered HTML of an affected page. Compare to a healthy page of the same type. The diff usually points straight at the cause.

Step 3 — Apply the template-level fix

For most causes of high LCP score, the fix lives in your theme/template files or CMS configuration. Make the change in the source, not on individual pages.

Step 4 — Clear caches

Page cache, CDN cache, browser cache. Many "the fix didn't work" reports are actually "the fix is cached behind a stale layer".

Step 5 — Re-crawl and verify

Run another audit. Confirm the affected URL count drops to zero (or close). If it doesn't, you're seeing a different cause — go back to Step 2.

High LCP Score fix being verified in an audit dashboard

Preventing High LCP Score from Coming Back

The same issue resurfacing six weeks later is the most common pattern in audits. Three preventive measures:

Add a CI/CD audit step. Crawl staging before every deploy goes live.
Monitor weekly. Set up automated re-crawls so issues surface in days, not quarters.
Document the fix. Add a comment in the template explaining what was fixed and why, so the next dev doesn't undo it.

If your site has any of the issues above, you're losing rankings every week. Free audit, 60 seconds — it'll show you exactly what's wrong.

When High LCP Score Is a Symptom of Something Bigger

Sometimes high LCP score is a downstream effect of a deeper architectural problem. Watch for these red flags:

Multiple unrelated issues appearing on the same set of pages
Issues that resolve temporarily then reappear after a deploy
Issues only visible to crawlers (not to logged-in users)

If any of these match, audit the underlying template, build pipeline, or third-party integration before patching the symptoms.

Architecture diagram showing systemic causes of high LCP score

Common Misconceptions

A few patterns we see repeatedly in audits:

"Higher word count is always better." False. Depth matters; padding hurts. A focused 800-word page often outranks a bloated 3,000-word one.
"More backlinks always help." Quality matters more than quantity. Twenty topical, authoritative links beat 200 random ones every time.
"You should target the highest-volume keyword." Volume is vanity; intent-matched long-tail keywords drive 80% of conversions.
"Schema is optional." In 2026, missing schema is a competitive disadvantage. Add it.

Skip the manual checks. atlookup runs every check in this guide automatically — full report in under 60 seconds, no signup.

If this guide was useful, the following articles go deeper on adjacent topics:

High LCP Score — Frequently Asked Questions

How long does it take to fix high LCP score?

For a single template-level fix, 30 minutes to 2 hours. For sites with multiple cascading causes, half a day to a day. Re-crawl verification adds another hour.

Do I need a developer to fix high LCP score?

For root-cause fixes, often yes. For configuration tweaks via your CMS admin, usually no. Identify the cause first; the right hire follows.

Is high LCP score affecting all my pages or just some?

Run a full crawl to find out. High LCP Score usually clusters by template — fixing the template fixes every affected page in one move.

Will high LCP score come back after fixing?

If you don't add a CI/CD audit step, almost certainly. Plugin updates and theme changes silently revert configurations. Automate a weekly re-crawl to catch regressions early.

What if I can't access the template?

Most CMSes expose enough of the template to fix high LCP score without raw code access. If yours doesn't, escalate to whoever owns the theme — patching one symptom at a time isn't sustainable.