Cassidoo.co is the personal blog of Cassidy Williams, a well known developer, speaker, and educator who writes about JavaScript, React, career growth, web development, dev tools, and learning in public. Her posts mix technical insights with approachable explanations, covering topics like UI patterns, coding tips, productivity workflows, and the human side of software engineering. Cassidy is known for her weekly newsletter, open-source work, and community involvement.
180 articles from this blog
A user shares their experience customizing Xteink e-reader firmware and wallpapers, including using CrossPoint Reader and creating a Connect Four game.
Astro 7.0 changes whitespace handling in JSX, breaking spacing between elements; fix with compressHTML config.
A CSS tutorial on creating an animated radial gradient mask over text using repeating-radial-gradient and the mask property.
A recap of attending and speaking at KeyCon 2026, a mechanical keyboard convention in Chicago.
A recap of Microsoft Build 2026, featuring keynote demos, vibe coding, agentic coding, and live-coding sessions.
A developer shares a simple clustering algorithm for lists using sub-list reversals, inspired by playing with Magna-Tiles.
Developer ships version 3 of todometer, an Electron/React to-do app with progress bar, adding editing, rearranging, and dependency updates.
Recap of Codemotion Madrid 2026, a tech conference with talks on AI, hiring practices, and developer mentorship.
Guide to connecting Logitech MX Creative Console to Elgato Key Lights using a Python script and REST API.
Recap of the opening keynote at Deep Dish Swift 2026, an iOS-focused conference, blending AI insights with pizza puns.
A speaker recounts their experience teaching AI and software development workshops at TechCamp Korea 2026, hosted by the U.S. Embassy Seoul.
A review of the BYOK digital typewriter, a portable distraction-free writing device for bloggers and writers.
A developer's journey migrating a project's CSS from Less to Sass to native CSS, highlighting the evolution of web styling.
A technical guide detailing camera settings and hardware setup for professional-quality live streaming using Sony cameras and Elgato gear.
A technical exploration of creating artistic designs using advanced CSS properties like gradients, corner-shape, and skew transforms.
A developer shares how manually engaging with newsletter subscribers by asking for replies significantly improved email open rates.
Explores the CSS corner-shape property for creating beveled, scooped, and other unique border corners with modern CSS.
A guide to creating a PowerShell function that mimics the Linux 'touch' command for creating and updating files.
A developer shares an experiment to improve discoverability in LLMs and AI tools like ChatGPT by directly asking them for SEO advice.
A developer shares the creation process of 'Code Wave,' a 2D word-collecting game built with Phaser and JavaScript for the GitHub Game Off 2025.
