Tools

Provides a visual interface for generating CSS code for various CSS3 properties.

Adobe Color is a web-based application that allows users to create, explore, and save color palettes for use in design projects.

“Autoprefixer is a PostCSS plugin which parses your CSS and adds vendor prefixes”

“A free tool that lets you create a gradient background for websites.”

“TinyPNG uses smart lossy compression techniques to reduce the file size of your WEBP, JPEG and PNG files.”

“A useful and liberating online code editor for developers of any skill. Write code in the browser, and see the results of it as you build.”

“Google Fonts is a library of 1488 open source font families and APIs for convenient use via CSS.”

“CSS Lint points out problems with your CSS code. It does basic syntax checking as well as applying a set of rules to the code that look for problematic patterns or signs of inefficiency.”

“We’ve trained a model called ChatGPT which interacts in a conversational way. The dialogue format makes it possible for ChatGPT to answer followup questions, admit its mistakes, challenge incorrect premises, and reject inappropriate requests.”

Evaluates a completed web page for accessibility issues involving structure, alternative text, forms, headings, contrast, and related problems. It complements the contrast checker rather than duplicating it. 

A browser-based image editor for cropping, resizing, adjusting, and exporting website images. It fills the practical gap between finding an image with Pexels and compressing it with TinyPNG.

Checks CSS syntax, properties, and values. I’d use this to replace CSS Lint, rather than keeping both. It gives beginners a more direct answer to whether their CSS is valid. 

Checks a page for invalid HTML, incorrect nesting, missing attributes, and structural markup problems. This is the clearest missing tool for someone building a first website.

Provides free stock photographs and videos that can be downloaded, edited, and used on personal or commercial websites. 

Tests whether text and background colors have enough contrast to remain readable and meet common web accessibility standards.

A browser-based design tool for planning page layouts, testing colors and typography, and creating visual website mockups before writing the HTML and CSS. It is widely used in professional UI and web design.