Palette from a website — Free CSS Tool

Palette from a website is an Astrina tool for CSS and front-end design. The colours a site actually uses. It fetches the target page from our servers and returns results in a few seconds.

How to use Palette from a website

1. Enter the URL you want to analyse.
2. Click "Run the check."
3. Review the results — each item is explained.
4. Fix any issues and re-run to confirm.

What Palette from a website is used for

Professionals working in CSS and front-end design use this tool to save time and catch errors before they become problems. Common use cases:

• Auditing and quality checks in CSS and front-end design
• Validating or converting output before deploying
• Debugging issues quickly without switching between multiple tools
• Generating boilerplate output to speed up development

Key features

• Fast: server-side analysis in seconds
• Free for most use cases — no account required for the majority of checks
• Accurate: uses the same techniques as professional SEO and security scanners
• Privacy-friendly: we do not store the content we analyse beyond the session

About this tool

This is part of Astrina's suite of 21 CSS and front-end design tools. All tools are available at astrina.io/utilities.

Frequently asked questions

Try the Palette from a website now — no account required for most checks, and the result is ready in seconds.