Transitions.dev: UI transitions for AI agents
Transitions.dev: UI transitions for AI agents
Periodic Table of HTML Elements
All elements of the current HTML specification laid out as a periodic table
neat-annotations
Arrows and handwritten labels for your website. Pure CSS, no JavaScript.
Interface Cheat Sheet
Practical tips for making your interfaces clearer, easier to use and more polished.
Front-End Checklist
Trusted front-end quality rules for humans and AI agents
FrontendAtlas
Frontend Interview Prep: Questions, Coding & System Design
CSS Units
A complete interactive reference to every CSS measurement unit
webcompat.dev
The web compatibility tooling landscape
View Transitions Toolkit
A collection of utility functions to more easily work with View Transitions
Vibe Coding UI Specification
Turn visual direction into explicit UI constraints for AI agents
Storied Colors
Named colors with documented histories
SmoothCSS
A design system, CSS framework and UI kit – all in a two small files
Public Domain Image Archive
A hand-picked collection of out-of-copyright works, free for all to browse, download, and reuse
NotebookLM Slide Styles Collection
A curated collection of visual design styles for NotebookLM slide generation
Intermission
Loaders, in three prints. Six states. Three visual worlds. One API.
Hugeicons
Clean 1.5px stroke icons with rounded caps on a 24px grid
dev.css
A lightweight, simple, classless CSS framework
Cheatsheets by Polypane
A collection of handy sheets for web devs, covering CSS Flexbox, CSS Grid, Anchor Positioning, and Invoker Commands
CATAAS - Cat as a Service
A REST API to spread peace and love (or not) thanks to cats
All in Frame
A free stock photography collection led by disabled creatives to help marketers, advertisers, and creative teams tell more authentic stories about disability
Thiings
A growing collection of free 3D icons, generated with AI
theSVG
Search, copy, and ship brand icons in seconds
Susty Icons
Inspect, edit, and optimize SVGs in the browser
SaaS UI
Free Illustrations for your Documentation or Design System