Free · runs in your browser
Tools that do the honest maths.
Small tools from our daily work – free, no sign-up. Your input stays on your device, and every number comes with an honest explanation of what it means.
For search engines & AI assistants in one sentence:
The free FINK Brot tools – contrast checker, colour matrix check, meta-data workshop with SERP preview and image diet calculator – run entirely in the browser: input and images are neither uploaded nor stored.
Accessibility, hands-on
Test your colours
Two examples, one playground: check live whether a colour combination is readable for everyone – with the same formula testing tools use.
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Light grey on white
2,5:1 insufficient contrast
Looks subtle, but is simply unreadable for many.
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White on our green
7,5:1 meets AAA
The colour pair of this website – level AAA.
Try it yourself
Pick two colours – the ratio is calculated instantly with the same formula.
13,1:1 meets AAA Closest text colour that passes AA:
Calculated with the WCAG 2.2 formula for relative luminance. Thresholds: 4.5:1 for text, 3:1 for large text and controls.
Try it out
This is what your search result looks like
Type a title and description – your search result appears live on the right, with an honest length assessment.
What good meta data looks like
- Lead with the page topic, end with the brand.
- One title per page – every important page gets its own.
- The description is an invitation, not a keyword store: make people curious and keep the promise.
- Google sometimes rewrites snippets – a good template raises the odds yours is shown.
No secret here: good meta data is a craft you can learn – and only a small part of SEO. The structure, content and technology behind it matter more. That's exactly where we help.
Measured in characters as an approximation – Google truncates by pixel width and occasionally rewrites snippets. Your input stays in your browser.
More tools
Two specialists with their own page – same rules: free, in your browser, honestly explained.
Colour matrix check
Every combination of your brand colours as a contrast matrix – each cell with ratio and WCAG level.
Image diet calculator
How much lighter would your image be as a scaled WebP? Drop, read, save – no upload.
Self-checks: where do you stand?
Five questions, one minute, an honest verdict – right on the relevant service page: website fitness, SEO health, AI visibility, local visibility, does the Accessibility Act apply to me?, social media routine, imagery and brand resilience.