How do I write a good Lovable prompt?

Describe one concrete outcome, give real content and constraints, and say what NOT to touch. Plan first for anything non-trivial, then build in small steps.

How do I get Lovable to follow my design properly?

Give Lovable concrete references — a screenshot, a site to draw from, exact colours and fonts — and store them in Project knowledge so every prompt is checked against the same design rules.

How do I give Lovable a website to use as inspiration?

Paste the site's URL in your prompt and describe which parts to borrow — layout, spacing, tone — Lovable can't literally browse and clone it, so be specific about what you want copied.

How do I get Lovable to copy a design style without copying the website?

Ask for the underlying pattern — layout, spacing, type scale — in your own words and colours, not the site's actual assets, text or exact visual identity.

How do I upload images to Lovable?

Attach images directly in the chat message box — Lovable can use them as design references or as assets to place in your app (e.g. a logo or product photo).

How do I get Lovable to use my logo?

Attach your logo file in chat and tell Lovable exactly where to place it (header, favicon, footer) — it won't guess sizing or position from the file alone.

How do I give Lovable my brand colours?

Give exact hex codes in your prompt or Project knowledge, name which role each colour plays (primary, accent, background), and ask Lovable to apply them via the Tailwind/shadcn theme, not one-off styles.

How do I get Lovable to use a specific font?

Name the exact font (e.g. from Google Fonts) and tell Lovable to load it and apply it across the theme, not just the current page.

How do I make Lovable build one feature at a time?

Ask for one clearly-scoped feature per prompt and confirm it works in Preview before moving on — bundling several features into one message makes failures harder to isolate and revert.

How do I get Lovable to plan a feature before building it?

Switch to Plan mode and describe the feature there — Lovable will ask questions and lay out a structured plan for you to approve before any code is written.

How do I get Lovable to review existing code before making changes?

Ask Lovable directly, ideally in Plan mode, to look at the relevant files or feature first and summarise how it currently works before proposing any changes.

How do I make Lovable ask me questions before building?

Use Plan mode and explicitly ask Lovable to raise questions or ambiguities before building — it's designed to clarify requirements first rather than guess.

How do I get better results from Lovable prompts?

Be specific and concrete, use real content, plan before building complex features, work in small steps, and review each result in Preview before prompting again.

Why does Lovable misunderstand my prompts?

Usually the prompt is ambiguous, references something that doesn't exist yet, or bundles too many changes at once — narrow it, add references, and split it up.

Should I use screenshots when prompting Lovable?

Yes, for layout and visual matching — a screenshot removes ambiguity that words leave open, especially for spacing, alignment and component styling.

How do I make Lovable match a screenshot?

Attach the screenshot, say precisely what to match (layout, spacing, colours, all of it), and iterate with follow-up prompts comparing Preview against the image side by side.

How do I safely make large changes to a Lovable project?

Plan the change first, bookmark a known-good version before starting, break it into small ordered steps, and check Preview between each step so you can revert cleanly if one goes wrong.

How do I stop Lovable changing things I didn't ask it to change?

Last checked 31 Aug 2026

Short answer

State explicitly what must stay unchanged in the same prompt, keep requests narrow, and check the diff/preview after each change so unintended edits are caught immediately.

Say what NOT to touch, every time it matters

Lovable works from the instruction it's given; if you don't set a boundary, it may treat related code as fair game for improvement. Add a constraint clause:

Update the pricing page copy to match the attached doc. Don't change the layout, colours, or any other page.

Keep requests narrow

Broad prompts ("clean up the codebase", "improve the design") invite broad changes. Narrow, named requests ("fix the alignment of the submit button on the contact form") don't. See /questions/how-do-i-tell-lovable-to-only-edit-one-section for a similar approach applied to a single page or component.

Review before continuing

After each prompt, check the Preview and, if you want to see exactly what changed, open the Code editor's diff view. Catching an unintended change immediately means one click in Version history undoes it — catching it three prompts later means untangling several changes at once.

Put durable rules in Project knowledge

If there are things that should never change without explicit approval (e.g. "never modify the checkout flow", "don't change the database schema without confirming first"), add them to Project knowledge so they apply across the whole project, not just the current chat.

What usually goes wrong

Refactoring side effects. Asking Lovable to "fix" or "improve" one function can lead it to touch shared code used elsewhere, changing behaviour on unrelated pages.
Style changes bleeding across components. A theme-level Tailwind change (see /questions/how-do-i-give-lovable-my-brand-colours) is often exactly what you want, but if you only meant one button, say "only this button" explicitly.
Not noticing until much later. Long gaps between checking Preview mean several prompts of drift accumulate before you spot it — check after every meaningful change.
No named boundary at all. "Improve this page" with zero constraints is the single most common cause of unwanted scope creep.

If a project has already drifted significantly, /questions/how-do-i-undo-a-bad-lovable-change covers using Version history to step back to a known-good state.

Sources

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