LCP too slow: optimize the most important charging time

Determining the Largest Visible Element

Not every page has the same LCP element: on a product page it can be the main image, on a guide a large block of text. Determine the element in a measurement before you optimize images or scripts. Distinguish server response, resource discovery, download and display.

Example: Recognizing the Result

Illustrative example: The performance trace identifies the hero photo as an LCP element. His request starts only after a script, although the image should be visible immediately.

Limit cause and implement correction

After the change, check the same page type with comparable conditions. A smaller image helps little if its address is known late by JavaScript. For text, fonts and style sheets can be relevant. Use several representative URLs so that a fast start page does not hide slow detail templates.

What makes you recognize a suitable correction

Examine request start time, download time and render delay separately. Make image source findable early and check the selected size and prioritization.

Classification and boundaries

When is this indication not a clear error?

The LCP element can change per device or view. Once measured, a value is not a complete picture of the field data.

Further documentation

web.dev: Optimizing LCP

LCP too slow after CMS and cause

Many audit messages can be resolved faster if they are grouped by system, page type and technical cause. CMS indentations are only linked where LCP has a clear cause or fixed route in the respective system too slowly.

LCP too slow in WordPressCheck theme, SEO plugin, page builder, cache plugin and media library. LCP too slow in TYPO3Target TypoScript, Site Config, Fluid Templates, Extensions, Language Tree and Caches. LCP too slow in ShopwareExamine experience worlds, category templates, product data, variants, sales channels and SEO URLs. LCP too slow in ShopifyTarget theme, collections, products, apps, metafields, markets and robots rules. LCP too slow in WooCommerceCheck WooCommerce templates, WordPress theme, SEO plugin, product data and cache specifically. LCP too slow in MagentoCheck catalog rules, layered navigation, product variants, store views, extensions and cache/indexer. LCP too slow in WixTarget SEO panel, dynamic pages, apps, redirects, and automatically generated sitemaps. LCP too slow in webflowExamine collections, templates, designer settings, redirects, custom code and sitemap settings.

Frequent causes of this error

JavaScript and performance budgetToo much JavaScript, blocking resources or client-side rendering worsen crawlability and core web vitals. Cache and CDN RulesCaching, CDN, edge rules or minification deliver old, blocked or technically modified pages. Media and image processesImage sizes, alt texts, lazy loading or media URLs are not maintained consistently or technically delivered incorrectly. Theme and page builder outputVisual builders, theme snippets, or design components generate HTML that is incomplete or contradictory to search engines.

Related SEO Errors

Images without dimensionsMissing image dimensions can cause layout shifts CLS too highUnexpected layout shifts disrupt users and weaken page experience GZIP is missingUncompressed text resources make pages unnecessarily difficult HTTP/2 is missingModern protocols improve parallel transmission and technical basis

Appropriate Seitenreport checks

This error should not be checked in isolation. The following tools and clusters help to narrow down the cause faster and to cleanly prioritize the affected URL groups.

Image SEO CheckerCheck images, alt texts, lazy loading and file sizes.Open the check -> Performance toolsControl core web hospitals and load time signals.Open the check -> Accessibility toolsCheck alt texts, contrast, forms and usability.Open the check ->

LCP too slow: optimizing the most important loading time