Showing 263 open source projects for "html css code tester"

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  • 1
    html-video

    html-video

    Programmatic video for coding agents — HTML to video on your laptop

    html-video is part of the nexu-io agent-native design ecosystem for creating motion graphics and video from web technologies. It is connected to a workflow where agents write HTML, CSS, and animation code that can be rendered into deterministic video output. The project is useful for creators and developers who want programmable video generation instead of editing everything manually in a timeline.
    Downloads: 0 This Week
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  • 2
    CSS Inspiration

    CSS Inspiration

    Curated collection of interesting, creative, or inspiring CSS effects

    CSS-Inspiration is a living gallery of modern CSS effects and components that highlights what’s possible with pure CSS and minimal markup. The collection ranges from micro-interactions and loaders to 3D transforms, complex backgrounds, hover states, and text effects, each presented as a small, self-contained demo. Source code is front and center, encouraging developers to study, copy, and tweak snippets for their own projects. Many examples lean on contemporary features—custom properties,...
    Downloads: 0 This Week
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  • 3
    Screenshot to Code

    Screenshot to Code

    A neural network that transforms a design mock-up into static websites

    Screenshot-to-code is a tool or prototype that attempts to convert UI screenshots (e.g., of mobile or web UIs) into code representations, likely generating layouts, HTML, CSS, or markup from image inputs. It is part of a research/proof-of-concept domain in UI automation and image-to-UI code generation. Mapping visual design to code constructs. Code/UI layout (HTML, CSS, or markup).
    Downloads: 0 This Week
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  • 4
    CSS Exercises
    This repository provides a set of hands-on CSS exercises that accompany the HTML and CSS modules in The Odin Project curriculum. The tasks are designed to be completed at specific points in the course, reinforcing each concept right after it is introduced. Learners are encouraged to use documentation and external resources freely, reflecting real-world workflows rather than rote memorization. Each exercise focuses on practical styling problems, from selectors and specificity to layout...
    Downloads: 0 This Week
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  • 5
    CSS Grid Generator

    CSS Grid Generator

    Generate basic CSS Grid code to make dynamic layouts

    ...Once the layout is arranged, the tool generates the corresponding HTML and CSS you can copy into your project—thus bridging the gap between design and code. The interface supports drag-and-drop of “divs” into grid cells, and you can experiment with grid gaps, spans and layout refinements in real time. Because it removes the barrier of hand-writing complex grid-template or grid-area definitions, it’s particularly useful for designers who are less comfortable with CSS or want rapid prototyping of grid layouts.
    Downloads: 0 This Week
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  • 6
    Emogrifier

    Emogrifier

    Converts CSS styles into inline style attributes in your HTML code

    Emogrifier converts CSS styles into inline style attributes in your HTML code. This ensures proper display on email and mobile device readers that lack stylesheet support. This utility was developed as part of Intervals to deal with the problems posed by certain email clients (namely Outlook 2007 and GoogleMail) when it comes to the way they handle styling contained in HTML emails.
    Downloads: 3 This Week
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  • 7
    Bootstrap

    Bootstrap

    HTML, CSS and JS framework for developing responsive websites and apps

    Bootstrap is an HTML, CSS, and JS framework designed for developing responsive, mobile first projects on the web. It's one of the most popular front-end frameworks and for good reason: it simply makes web development faster and easier. People of all skill levels can create projects of all sizes with Bootstrap, and for all types of devices too. With Bootstrap, you get a host of nifty features such as precompiled CSS, impressive scalability, dozens of custom HTML and CSS components and more.
    Downloads: 61 This Week
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  • 8
    Phoenix Code Editor

    Phoenix Code Editor

    Phoenix is a modern open-source Code Editor for the web

    Phoenix is a modern open-source and free software code editor for the web, built for the browser.
    Downloads: 7 This Week
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  • 9
    htmx

    htmx

    Hgh power tools for HTML

    htmx gives you access to AJAX, CSS Transitions, WebSockets and Server-Sent Events directly in HTML, using attributes, so you can build modern user interfaces with the simplicity and power of hypertext. htmx is small (~14k min.gz’d), dependency-free, extendable & has reduced code base sizes by 67% when compared with react.
    Downloads: 23 This Week
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  • 10
    Vanilla Framework

    Vanilla Framework

    From community websites to web applications, this CSS framework

    Backed by open-source code and written in Sass by the Canonical Web Team. Vanilla contains a responsive CSS grid, basic style for HTML elements and a selection of key useful patterns and utility classes that you can extend. Designed to be composable, you can include the whole framework to avail of all styles or you can use only what you need for your project.
    Downloads: 3 This Week
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  • 11
    Electron

    Electron

    Build cross-platform desktop apps with JavaScript, HTML, and CSS

    Electron is an open-source framework that uses Node.js runtime and the Chromium web browser thereby allowing you to build apps with JavaScript, HTML, and CSS. It is compatible with Mac, Windows and Linux and comes with convenient features such as automatic updates, app crash reporting, debugging and profiling and more. It takes care of the hard parts so you can focus on the core of your app. Initially developed for the Atom editor, Electron is now the framework of choice for dozens of popular desktop apps including Microsoft's Visual Studio Code.
    Downloads: 221 This Week
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  • 12
    JS-Beautify

    JS-Beautify

    Beautifier for javascript

    js-beautify is a command-line and Python-based tool that beautifies and formats JavaScript, HTML, and CSS code. It helps improve code readability by enforcing consistent indentation and style rules. Widely used in development workflows and CI pipelines, it supports customization through config files and can process both single files and entire projects.
    Downloads: 9 This Week
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  • 13
    Tacit

    Tacit

    CSS framework for dummies, without a single CSS class

    ...Tacit's goal is to be super simple and always with the same look-and-feel. If you want something more custom, like a different theme, feel free to make it on top of Tacit. You should not use any CSS classes to make your HTML code look nice. Just make sure it is HTML5 compliant and you'll be fine.
    Downloads: 0 This Week
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  • 14
    interactive-examples

    interactive-examples

    Home of the MDN live code editor interactive examples

    Home of the MDN interactive code examples. The dynamically generated pages, their dependencies, and assets are generated to the prod branch.
    Downloads: 8 This Week
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  • 15
    UIkit

    UIkit

    Lightweight modular front-end framework for developing web interfaces

    A lightweight and modular front-end framework for developing fast and powerful web interfaces. UIkit will work on pretty much any modern browser. Using UIkit works best if you have a solid code editor, for example Sublime Text or Atom. To be even more efficient, we recommend that you install one of the autocomplete plugins for your favorite IDE or code editor. This saves a lot of time, as you won't have to look up and type all UIkit classes and markup. To use UIkit's CSS and JavaScript, include the files in your own HTML and then create the markup of any of the components. ...
    Downloads: 8 This Week
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  • 16
    Skewer

    Skewer

    Live web development in Emacs

    Skewer Mode is an Emacs package for interacting with live JavaScript, CSS, and HTML running inside a web browser. Developers can send expressions or complete buffers from Emacs and evaluate them immediately on an attached page. JavaScript results appear in the minibuffer or a dedicated REPL, while CSS rules and HTML elements can be updated without reloading the document. Multiple browser windows or tabs may connect simultaneously and receive the same submitted code. ...
    Downloads: 3 This Week
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  • 17
    LaTeX.CSS

    LaTeX.CSS

    LaTeX.css is a library that makes your website look like a LaTeX doc

    This almost class-less CSS library turns your HTML document into a website that looks like a LATEX document. Write semantic HTML, and you are good to go. The source code can be found on GitHub. LaTeX.css is a minimal, almost class-less CSS library that makes any website look like a LaTeX document. Add any optional classes to elements with special styles (author subtitle, abstract, lemmas, theorems, etc.).
    Downloads: 3 This Week
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  • 18
    AngleSharp

    AngleSharp

    The ultimate angle brackets parser library parsing HTML5, MathML, SVG

    AngleSharp follows the W3C specifications and gives you the same results as state of the art browsers. Besides the official API AngleSharp adds some useful extension methods on top. This makes working with the DOM convenient. AngleSharp integrates everything you need to explore and mutate the DOM tree. Node retrieval is straight forward by using powerful CSS query selectors. The CSS queries in AngleSharp are super fast and very simple to use. AngleSharp respects the relationship of HTML with...
    Downloads: 4 This Week
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  • 19
    prettierd

    prettierd

    Prettier, as a daemon, for improved formatting speed.

    Prettier, as a daemon, for improved formatting speed. Many parsers ship with prettierd, including JavaScript, TypeScript, GraphQL, CSS, HTML and YAML. Please notice that starting with version 0.12.0, prettierd now supports invoking the local version of prettier, so instead of adding new languages to prettierd, you should rely on that feature to use it locally with your custom version of prettier and enabled plugins.
    Downloads: 5 This Week
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  • 20
    TACHYONS

    TACHYONS

    Functional CSS for humans

    ...Documentation helps promote reusability and shared knowledge. CSS shouldn't impede accessibility or the default functionality of HTML. You should send the smallest possible amount of code to the user. Usable across projects. Growing open source component library. Works well with plain HTML, React, Ember, Angular, Rails and more. Infinitely nestable responsive grid system. Built with PostCSS. Optimized for maximum gzip compression.
    Downloads: 0 This Week
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  • 21
    H2O Wave

    H2O Wave

    Realtime Web Apps and Dashboards for Python and R

    No HTML, CSS, Javascript skills are required. Build rich, interactive web apps using pure Python. Broadcast live information, visualizations, and graphics using Wave's low-latency real-time server. Instant control over every connected web browser using a simple and intuitive programming model. Preview your app live as you code. Dramatically reduce the time and effort to build web apps.
    Downloads: 38 This Week
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  • 22
    massCode

    massCode

    A free and open source code snippets manager for developers

    ...It's great for classroom use, team meetings, conferences or simply reviewing notes on your own. You can not only collect snippets but also see the rendering result for HTML and CSS in real-time. Test the idea or just view the result.
    Downloads: 11 This Week
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  • 23
    draw-a-ui

    draw-a-ui

    Draw wireframe sketches and generate HTML with AI vision models

    draw-a-ui is an experimental open source application that converts hand-drawn interface wireframes into working HTML code using artificial intelligence. draw-a-ui combines the tldraw canvas drawing tool with a vision-capable language model to interpret user-created mockups and translate them into a single HTML layout styled with Tailwind CSS. When a user sketches a UI on the canvas, the application captures the current drawing as SVG, converts it into a PNG image, and sends that image to a vision model that generates the corresponding markup. ...
    Downloads: 0 This Week
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  • 24
    marko

    marko

    A declarative, HTML-based language that makes building web apps fun

    A declarative, HTML-based language that makes building web apps fun. If you know HTML, CSS, and Javascript, you know Marko. Streaming, partial hydration, an optimizing compiler, & a small runtime. Start with simple HTML templates and add powerful components as needed. Marko is powering high-traffic websites like ebay.com. Marko is HTML re-imagined as a language for building dynamic and reactive user interfaces.
    Downloads: 3 This Week
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  • 25
    tabler icons

    tabler icons

    1950 free MIT-licensed high-quality SVG icons

    ...Free and open-source icons designed to make your website or app attractive, visually consistent, and simply beautiful. Each icon is designed on a 24x24 grid and a 2px stroke. All icons are built with SVG, so you can place them as <img>, background-image and inline in HTML code. If you load an icon as an image, you can modify its size using CSS. You can paste the content of the icon file into your HTML code to display it on the page. Import the icon and render it in your component. You can adjust SVG properties through React props. Angular components are available through the angular-tabler-icons package. ...
    Downloads: 1 This Week
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