Why is my Lovable website slow?

Slowness is usually caused by large unoptimised images, too much data fetched at once, or heavy client-side rendering — profile it with Lighthouse/DevTools before asking Lovable to fix anything.

How do I speed up a Lovable website?

Compress and lazy-load images, fetch only the data each page needs, remove unused dependencies, and ask Lovable to run a performance/codebase audit to find the highest-impact fixes.

Why does my Lovable app get slower as I add features?

Each new feature can add its own data fetches, dependencies, and re-renders that compound over time — without periodic clean-up, an app accumulates weight even if each individual change seems small.

How do I improve Lighthouse scores?

Run Lighthouse to find your worst-scoring category, fix the top 2-3 flagged issues (usually images, unused JavaScript, or render-blocking resources), and re-run it to confirm before moving on.

How do I improve Core Web Vitals?

Focus on the three metrics Google measures — LCP (loading), INP (interactivity), and CLS (visual stability) — and fix the specific one flagged as poor, usually starting with images for LCP.

How do I improve LCP?

Largest Contentful Paint is almost always slowed by an oversized hero image or a render-blocking resource — compress/preload the largest above-the-fold element and defer everything not needed for first paint.

Why are images loading slowly?

Images usually load slowly because they're uploaded at full camera/design resolution, in an uncompressed format, and without lazy-loading or a CDN — the fix is compression, correct sizing, and modern formats.

How do I optimise images?

Resize images to their actual display size, compress them, convert to WebP/AVIF where practical, and lazy-load anything below the fold — ask Lovable to apply this across the project, not just one page.

How do I lazy-load images?

Ask Lovable to add native lazy-loading to images below the fold while keeping the hero/first-visible image loading eagerly, so visitors aren't downloading offscreen images before they're needed.

Why is my database making so many requests?

Usually a component is re-fetching data on every render, a page is running the same query multiple times, or you're fetching entire tables instead of what's actually needed — ask Lovable to audit data-fetching patterns.

How do I reduce unnecessary database calls?

Fetch only what a page needs, cache results, batch requests, and let Postgres do filtering instead of pulling whole tables into the client.

Why does my app become slow with more users?

Slowdowns under load usually mean missing database indexes, no rate limiting, or queries that scale linearly with row count instead of being paginated.

How do I find unnecessary React renders?

Use React DevTools' Profiler and the 'Highlight updates' setting to see which components re-render too often, then fix unstable props, missing memoisation, or state stored too high in the tree.

How do I remove unused code?

Ask Lovable to search for unused components, imports and dependencies, or run a tool like ts-prune/depcheck via the terminal, then remove what's confirmed unused and re-test.

Why is my dashboard slow?

Last checked 31 Aug 2026

Short answer

Dashboards are usually slow because they run several unoptimised queries at once, re-render on every state change, or load large charts and images without lazy loading.

Common causes

Dashboards combine everything that tends to make a page slow: multiple data sources, charts, tables, and frequent re-renders from filters or date pickers.

Too many queries firing at once. Each widget doing its own unfiltered fetch on mount adds up quickly. See /questions/how-do-i-reduce-unnecessary-database-calls.
Missing indexes. A dashboard summarising thousands of rows without a database index on the filtered/sorted column will get slower as data grows.
Heavy client-side aggregation. Summing or grouping rows in JavaScript after fetching everything is much slower than doing it in a Postgres query or view.
Unnecessary re-renders. A shared filter state stored too high in the component tree can re-render the whole dashboard on every keystroke.
Unoptimised charts/images. Large chart libraries or uncompressed images loaded eagerly slow the first paint.

Steps to diagnose

Open your browser's dev tools Network tab and reload the dashboard — look for slow or duplicate requests.
Ask Lovable:

Look at the dashboard page and list every database query it runs on load, and whether any could be combined or filtered earlier.

Check whether summary numbers could be computed by a Postgres view or function instead of in the browser.
Add loading skeletons so the page feels responsive while data streams in — this doesn't fix the root cause but helps perceived performance.

What usually goes wrong

People add more widgets to a dashboard over time without revisiting the original queries, so the count of round trips grows silently. Periodically re-run the audit above. For a systematic pass across the whole project, see /questions/how-do-i-audit-a-lovable-project-s-performance.

Sources

Database

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You might also need

GuideHow to Improve Lovable Loading SpeedFind the actual cause of a slow project — images, queries, waterfalls or scripts — before changing anything.