20 tools · local-first
Utility belt / v1.0Built for the work

Small tools.
Serious craft.

Twenty sharp, private utilities for the moments that break your flow. No accounts. No uploads. No nonsense.

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01 Private by default 02 Works offline 03 Zero sign-up
JSON Formatter instrument Instrument 01 / Developer Turn chaos
into structure. Open JSON Formatter ↗
09Resize 04Secure
Browse the bench

Pick your discipline.

05 categories
Fast lane

Most reached for.

06 essentials
T/T
The promise

Your files stay yours.
Your flow stays unbroken.

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20sharp tools

WCAG Contrast Checker

🔒 Runs entirely in your browser — your data never leaves this tab
Local processorReady for input

About WCAG Contrast Checker

Check color contrast ratios for WCAG 2.1 AA and AAA compliance. Instant pass/fail for normal and large text. Free WCAG contrast checker.

How to use WCAG Contrast Checker

  1. Enter or select the source material in the tool above.
  2. Choose the available options for the result you need.
  3. Run the tool, review the result, then copy or download it.

Example

Compare foreground #111111 with background #FFFFFF to check WCAG AA and AAA results.

Frequently asked questions

Is WCAG Contrast Checker free to use?

Yes. WCAG Contrast Checker is free, requires no account, and has no usage limit imposed by TipityTools.

Does WCAG Contrast Checker upload my data?

No. The calculation runs locally in your browser. TipityTools does not send your tool input or generated output to its server.

Can I use WCAG Contrast Checker offline?

Yes, after the application files have been cached by your browser. Third-party advertising remains network-only.