One website in, its brand out: colours, fonts, logo, voice, call to action, photos.

For any website: its brand colours, fonts (with the nearest Google Fonts pairing), logo, tone of voice with do's and don'ts, main call to action, About line and contact, and its own photos.

The read behind every piece Katalis designs for a member, as an API. Give it a website and it reads the brand the way a designer would: the colours from its own styles and logo, the fonts it loads (with the nearest Google Fonts pairing), its logo, how its copy sounds and what that copy avoids, its main call to action with the real link, its own About line and contact details, and the photos on its pages. Everything comes from the site itself; anything it can't read comes back empty, never guessed.

what you’d build with it

Onboarding that already knows them

A customer types their website and your app opens in their colours and fonts, with their logo in place.

On-brand generation

Feed the colours, fonts and voice into whatever writes or designs for them, so the output sounds and looks like the business.

Agency and CRM enrichment

Every lead's brand on file before the first call: what they look like and how they talk.

example response

{
  "name": "Example Bakery",
  "colors": ["#0075ff", "#86b041", "#fdb71a", "#c12424"],
  "logo": "https://example.co.uk/logo.svg",
  "fonts": { "display": { "name": "Barlow Condensed", "style": "display" }, "body": { "name": "Barlow", "style": "sans" } },
  "voice": { "tone": "Casual and friendly, first-person plural, distinctly British.", "do": ["playful language"], "dont": ["formal language"] },
  "callToAction": { "label": "Order now", "href": "https://example.co.uk/order" },
  …

Truncated. Full documentation and a downloadable README come with a free account.

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Why developers pick it

Read, not guessed

Colours from the site's own CSS and logo, fonts it actually loads, a voice read from its own words. Empty stays empty.

Fonts you can use

What the site declares, plus the nearest pairing from Google Fonts, so you can render with it straight away.

The voice, not just the look

Tone plus what the copy leans on and what it avoids: ready for anything that writes for them.

Safe to point at anything

Public addresses only, every stylesheet checked, nothing stored.

Terms & disclaimer. Provided “as is” with no warranty. Results are derived from public sources and, in places, generated by AI — they may be inaccurate or out of date and are not legal, professional or credit advice. Company data contains public sector information licensed under the Open Government Licence v3.0. Any logos returned remain the trademarks of their owners (nominative/identification use only, no endorsement implied). Any scores or ratings are an indicative opinion, not a statement of fact about a company. You are responsible for your own use. See the full API Terms of Use or get in touch.