Question 1

Why is my Lovable website slow?

Accepted Answer

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.

Question 2

How do I speed up a Lovable website?

Accepted Answer

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.

Question 3

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

Accepted Answer

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.

Question 4

How do I improve Lighthouse scores?

Accepted Answer

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.

Question 5

How do I improve Core Web Vitals?

Accepted Answer

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.

Question 6

How do I improve LCP?

Accepted Answer

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.

Question 7

Why are images loading slowly?

Accepted Answer

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.

Question 8

How do I optimise images?

Accepted Answer

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.

Question 9

How do I lazy-load images?

Accepted Answer

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.

Question 10

Why is my database making so many requests?

Accepted Answer

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.

Question 11

How do I reduce unnecessary database calls?

Accepted Answer

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

Question 12

Why is my dashboard slow?

Accepted 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.

Question 13

Why does my app become slow with more users?

Accepted Answer

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

Question 14

How do I find unnecessary React renders?

Accepted Answer

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.

Question 15

How do I remove unused code?

Accepted Answer

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.

Question 16

How do I audit a Lovable project's performance?

Accepted Answer

Combine a browser Network/Performance trace, a React DevTools profile, and a query review of your Supabase schema — then ask Lovable to fix the specific issues found rather than 'optimise everything'.

Speed & Performance questions