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Modern CSS Solutions is a series by frontend developer Stephanie Eckles examining modern CSS approaches to common frontend problems. Articles cover topics such as custom properties, container query units, CSS math functions, selectors, accessibility upgrades, and testing browser feature support with fallbacks and build tools. A companion site, SmolCSS, offers minimal snippets for modern layouts and components.
Jellyfin allows users to customize the appearance of the web interface by applying custom CSS. The documentation states that custom CSS is only applied to clients that use Jellyfin Web and that support is not provided for issues caused by custom CSS.
Project Wallace is a web-based CSS analyzer that examines stylesheets for complexity, specificity, performance and design tokens. Users paste a URL or raw CSS to receive a full analysis, a quality score, a design token audit and a custom property inspector, plus a cascade layer visualizer. Standalone tools include a CSS prettifier, minifier, diff viewer and specificity calculator.
Project Redesign is a browser extension for myanimelist.net that overrides the site's default CSS with custom CSS to give it a modern look. The developer began it for personal use and later shared it with the community. The project states it collects no data and embeds no analytics, and the extensions are released under a freeware license.
Mastodon Customizable Interface is a userscript for arranging Mastodon web components on a 2*5 grid using CSS grid, with drag-and-drop to move components and resizing on the grid. It requires browser support for CSS grid and works only with TamperMonkey. The script is not compatible with Mastodon pinned column functionality, and pinning columns produces bugs. Users replace example.com in lines 7 and 8 with their instance domain.
Guides covers internet experience topics such as archiving websites, blocking advertisements, bypassing paywalls and surfing the web. It also offers HTML and CSS material on background images, CSS variables, custom fonts, flexbox, text columns and responsive websites, plus Neocities pages on custom 404 pages, backups and redirects.
Stylus is a browser extension for restyling websites, derived from the Stylish extension's version 1.5.2 source code. It allows users to install themes and styles, write custom CSS, and import databases from Stylish. Analytics and data collection were removed. It is available for Chrome, Firefox and Opera, and supports automatic updates of installed styles.
Amino is a browser extension that functions as a live CSS editor, enabling users to customize any website with CSS that persists. The editor can be used to create website themes and skins.
BetterDiscord is a project that extends Discord's functionality with new features. It offers themes that customize the client with CSS and a built-in plugin loader and plugin API for JavaScript plugins. Additional utilities include dual boot, a live CSS editor, developer tools and transparency options.
Discord Adblock is a CSS rule collection that reduces Nitro ads and other premium-only elements in the Discord client, such as the store, gift button and various upsells. It requires a client mod like Vencord or BetterDiscord, where the list is added through the Custom CSS menu. The author notes that rules using :has() may slightly degrade performance.
GradientArt is a CSS gradient editor with a visual canvas, a full path editor, alignment and spread tools, and clipping masks. It supports layers in folders and exports customizable HTML, CSS and SVG. Saving a project requires signing in; editing is not autosaving.
TemplateMo offers over 620 free HTML and CSS website templates, including responsive Bootstrap layouts and AI-customizable pure CSS designs. The templates are described as free for commercial, personal, or learning purposes, and no signup is required. Templates cover categories such as one-page, business, portfolio, and landing pages.
Tooplate offers a collection of free HTML and CSS website templates for startups, SaaS products and small businesses. The templates are described as mobile-friendly, responsive and built with modern CSS frameworks including Bootstrap. Templates can be customized in any HTML code editor.
Userscripts is an open source Safari extension that saves and runs JavaScript and CSS code for visited websites. It is offered on the App Store as a free user script and style manager, with use cases spanning automatic page redirection, website page manipulation, custom ad-blocking, and custom code or style injection. The app provides no user tracking.
Plash is a free macOS app that sets any website as the desktop wallpaper, such as a calendar, dashboard or animated GIF. It supports multiple websites, automatic reloading at a custom interval, Browsing Mode for interacting with the page, and custom CSS and JavaScript.
Datawrapper is an online tool for creating interactive charts, maps, and tables without code. It offers more than 20 chart types, over 4,000 basemaps for maps, and configurable tables. Visualizations are responsive and can be embedded on websites or exported to PowerPoint, PNG, PDF, and SVG. A step-based editor, custom themes, and real-time collaboration support design and publishing.
ZoomIt is a Sysinternals presentation utility for zooming and drawing on the screen. It runs in the system tray and activates with customizable hotkeys to zoom in on an area of the screen, move around while zoomed, and draw on the zoomed image. It also supports snip screenshots, recording, and a break timer.
Audion is an open-source, local-first desktop audio player for personal music collections, offering bit-perfect playback, synchronized lyrics, custom CSS themes and sandboxed plugins. It works offline and collects no telemetry. It runs on Windows, macOS, Linux and Android, and an optional self-hosted server allows streaming lossless audio to other devices.
Bonjourr is a minimalist startpage that replaces the browser's new tab page with a customisable, lightweight design inspired by iOS. It offers dynamic backgrounds drawn from curated Unsplash collections, quick links, a search bar, notes, a Pomodoro timer, dark mode and custom CSS. It is open source and does not require an account.
Chart.xkcd is a chart library that plots sketchy, cartoony or hand-drawn styled charts. It can be included via a script tag or installed via npm, and covers line, XY, bar, stacked bar, pie/doughnut, radar and combined charts. Options allow customization of the chart appearance.
CoolBackgrounds is a web-based collection of tools for generating colorful background images suitable for use as blog and website visuals, desktop wallpapers, or mobile wallpapers. The platform currently offers tools for creating trianglify abstract triangle patterns, particle graphics, CSS gradients, gradient topography designs, and accessing images from Unsplash, with plans to add more tools over time.
A browser extension that finds and saves images displayed on the current tab. A toolbar button opens an image-filtering tool that filters by dimensions, image type, size in bytes and URL, with custom regular expressions for advanced filtering. It detects images loaded on the page, referenced in links, included in text, or used as CSS backgrounds, and supports deep searching of linked pages.
fffuel is a collection of free color tools and SVG generators for creating gradients, patterns, textures, shapes, blobs and backgrounds. Generated graphics can be customized and used on the web or in design applications, and an SVG to PNG conversion tool is included. The site also hosts a chart of browser support for CSS and web platform features.
FirefoxCSS Store is a community hub for discovering and sharing Firefox userChrome.css themes. It hosts a collection of user-submitted themes, offers search and sorting functionality, and provides access to theme repositories and related community resources.
