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

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.

How do I tell Lovable to only edit one section?

Name the exact page, component or element (or select it via the preview toolbar) and explicitly say the rest of the app should stay unchanged.

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 undo a bad Lovable change?

Open Version history and revert to the version saved right before the bad change — every change Lovable makes is auto-saved as a version, so you can step back without losing later unrelated work.

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 get Lovable to review existing code before making changes?

Last checked 31 Aug 2026

Short answer

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.

Ask for a read-before-write step

Lovable doesn't automatically explain its understanding of existing code unless asked. Prompt for it explicitly:

Before making any changes, review how the current checkout flow works — which files are involved, how state is passed between them — and summarise it back to me. Don't change anything yet.

This surfaces wrong assumptions early: if Lovable's summary of "how it currently works" is wrong, that's cheaper to correct in words than after a broken edit.

Do this in Plan mode for bigger changes

Plan mode is well suited to this because it makes no code changes while it explores — you can go back and forth confirming its understanding of the existing feature before approving any build step. See /questions/how-do-i-get-lovable-to-plan-a-feature-before-building-it.

Reference specific files if you know them

If you've looked at the Code editor and know roughly which files matter (a component name, a hook, a route), name them — this narrows what Lovable inspects and reduces the chance it modifies the wrong, similarly-named file.

Review src/components/CheckoutForm.tsx and the related Stripe server function before proposing how to add a discount code field.

What usually goes wrong

Assuming Lovable "remembers" old code perfectly across a long chat. In long conversations, asking it to re-check the current state of a file before editing avoids working from a stale mental model.
Skipping this step on inherited or unfamiliar projects. If you didn't build the existing code yourself (e.g. you took over a project, or used Git sync to pull in changes made elsewhere), always ask for a review first — see /questions/how-do-i-safely-make-large-changes-to-a-lovable-project.
Treating the review as optional busywork. On a feature with several interacting parts (auth, payments, roles) a five-minute review prompt is far cheaper than an edit that silently breaks something else.

For genuinely large or risky changes on a live project, it's also worth having a human review the plan — PromptSites.com can sanity-check a Lovable plan before it touches a production app.

Sources

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