How to write a great agents.md: Lessons from over 2,500 repositories
Learn how to write effective agents.md files for GitHub Copilot with practical tips, real examples, and templates from analyzing 2,500+ repositories.
Android VPAT journey
Background A Voluntary Product Accessibility Template (VPAT) is a document that outlines how well a product aligns with accessibility (a11y) standards. Its primary purpose is to inform customers about a product’s a11y features, enabling them to make informed decisions before purchasing software. At Slack, we conducted a VPAT by a third party a11y vendor in…
Cloudflare outage on November 18, 2025
Cloudflare suffered a service outage on November 18, 2025. The outage was triggered by a bug in generation logic for a Bot Management feature file causing many Cloudflare services to be affected.
Gemini 3 Pro is now available in Figma Make
We ran Gemini 3 through a series of design exercises in Figma Make. Here’s what stood out.
Level up design-to-code collaboration with GitHub’s open source Annotation Toolkit
Prevent accessibility issues before they reach production. The Annotation Toolkit brings clarity, compliance, and collaboration directly into your Figma workflow.
Efficient Optimization With Ax, an Open Platform for Adaptive Experimentation
We’ve released Ax 1.0, an open-source platform that uses machine learning to automatically guide complex, resource-intensive experimentation. Ax is used at scale across Meta to improve AI models, tune production infrastructure, and accelerate advances in ML and even hardware design. Our accompanying paper, “Ax: A Platform for Adaptive Experimentation” explains Ax’s architecture, methodology, and h
From Chaos To Clarity: Simplifying Server Management With AI And Automation — Smashing Magazine
Server chaos doesn’t have to be the norm. AI-ready infrastructure and automation can bring clarity, performance, and focus back to your web work.
Vercel collaborates with Google for Gemini 3 Pro Preview launch
The Gemini 3 Pro Preview model, released today, is now available through AI Gateway and in production on v0.app.
Third Stage Engineering
Replicate is joining Cloudflare
Bringing Replicate’s tools into Cloudflare will continue to make our Workers Platform the best place on the Internet to build and deploy any AI or agentic workflow.
How Dash uses context engineering for smarter AI
Building effective, agentic AI isn’t just about adding more; it’s about helping the model focus on what matters most.
Highlights from Git 2.52
The open source Git project just released Git 2.52. Here is GitHub’s look at some of the most interesting features and changes introduced since last time.
Announcing the Completion of the Core 2Africa System: Building the Future of Connectivity Together
Connecting Africa and the World We’re excited to share the completion of the core 2Africa infrastructure, the world’s longest open access subsea cable system. 2Africa is a landmark subsea cable system that sets a new standard for global connectivity. This project is the result of years of collaboration, innovation, and a shared vision to connect […]
Enhancing HDR on Instagram for iOS With Dolby Vision
We’re sharing how we’ve enabled Dolby Vision and ambient viewing environment (amve) on the Instagram iOS app to enhance the video viewing experience. HDR videos created on iPhones contain unique Dolby Vision and amve metadata that we needed to support end-to-end Instagram for iOS is now the first Meta app to support Dolby Vision video, […]
Unlocking the full power of Copilot code review: Master your instructions files
Discover practical tips, examples, and best practices for writing effective instructions files. Whether you’re new or experienced, you’ll find something to level up your code reviews.
Open Source Is Good for the Environment
Most people have heard of open-source software. But have you heard about open hardware? And did you know open source can have a positive impact on the environment? On this episode of the Meta Tech Podcast, Pascal Hartig sits down with Dharmesh and Lisa to talk about all things open hardware, and Meta’s biggest announcements […]
CSS Gamepad API Visual Debugging With CSS Layers — Smashing Magazine
Debugging controllers can be a real pain. Here’s a deep dive into how CSS helps clean it up and how to build a reusable visual debugger for your own projects.
Quick Hit #62
CSS Masonry shaping up now that the CSSWG has landed on display: grid-lanes to trigger the layout switch.
Quick Hit #61
Bramus shares that Chrome Canary no longer forces CSS animations using width and height properties to run on the main thread.
The Range Syntax Has Come to Container Style Queries and if()
Being able to use the range syntax with container style queries — which we can do starting with Chrome 142 — means that we can compare literal numeric values as well as numeric values tokenized by custom properties or the attr() function.
GitHub Availability Report: October 2025
In October, we experienced four incidents that resulted in degraded performance across GitHub services.
TypeScript, Python, and the AI feedback loop changing software development
An interview with the leader of GitHub Next, Idan Gazit, on TypeScript, Python, and what comes next.
Older Tech In The Browser Stack — Smashing Magazine
There are many existing web features and technologies in the wild that you may never touch directly in your day-to-day work. Perhaps you’re fairly new to web development and are simply unaware of them because you’re steeped in the abstraction of a specific framework that doesn’t require you to know it deeply, or even at all. Bryan Rasmussen looks specifically at XPath and demonstrates how it can b
Connecting to production: the architecture of remote bindings
Remote bindings allow you to connect your local Worker code to deployed Cloudflare resources like R2 and D1. Come along on the technical journey of how we built this feature to create a seamless local development experience.
The bastard DBA from hell
Two little stories from the working life of the bastard DBA from hell, fighting user problems (but mostly users).
Figma opens a new hub in India to support our growing community of builders
With our new hub in Bengaluru, we’re investing in India’s fast-growing product development community.
How Copilot helps build the GitHub platform
A breakdown of how Copilot coding agent has contributed to a better, more powerful GitHub.
Building world-class product search at Shopify: Where C++ excellence meets ML innovation (2025) - Shopify
Learn how we solved a major search engineering dilemma—running machine learning models at native C++ speed.
PostgreSQL 18: More performance with index skip scans
This blog describes the performance of Indexes in PostgreSQL version 18. You can read more to know how the performance matrix works.
StyleX: A Styling Library for CSS at Scale
StyleX is Meta’s styling system for large-scale applications. It combines the ergonomics of CSS-in-JS with the performance of static CSS, generating collision-free atomic CSS while allowing for expressive, type-safe style authoring. StyleX was open sourced at the end of 2023 and has since become the standard styling system across Meta products like Facebook, Instagram, WhatsApp, […]
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Effectively Monitoring Web Performance — Smashing Magazine
There are lots of tips for [improving your website performance](https://www.debugbear.com/blog/improve-website-performance?utm_campaign=sm-10). But even if you follow all of the advice, are you able to maintain an optimized site? And are you targeting the right pages? Matt Zeunert outlines an effective strategy for web performance optimization and explains the roles that different types of data pl
Create new monetization opportunities with Stripe Billing’s recent upgrades
We recently released a series of improvements to expand multiprocessor support, give you more control over your billing and invoicing models, and better tailor your pricing for AI products. Here’s everything that’s new.
Headings: Semantics, Fluidity, and Styling — Oh My!
A few links about headings that I've had stored under my top hat.
Meta’s Generative Ads Model (GEM): The Central Brain Accelerating Ads Recommendation AI Innovation
We’re sharing details about Meta’s Generative Ads Recommendation Model (GEM), a new foundation model that delivers increased ad performance and advertiser ROI by enhancing other ads recommendation models’ ability to serve relevant ads. GEM’s novel architecture allows it to scale with an increasing number of parameters while consistently generating more precise predictions efficiently. GEM propagat
Vercel: The anti-vendor-lock-in cloud
Framework-defined infrastructure interprets your code and provisions what you need, keeping your application portable across any platform.
What 986 million code pushes say about the developer workflow in 2025
Nearly a billion commits later, the way we ship code has changed for good. Here’s what the 2025 Octoverse data says about how devs really work now.
Smashing Animations Part 6: Magnificent SVGs With And CSS Custom Properties — Smashing Magazine
SVG is one of those web technologies that’s both elegant and, at times, infuriating. In this article, pioneering author and web designer Andy Clarke explains his technique for animating SVG elements that are hidden in the Shadow DOM.
How Nous Research used BotID to block automated abuse at scale
Extract audio from your videos with Cloudflare Stream
Cloudflare Stream provides a unified platform for video storage, encoding, and delivery. Our mission has always been to provide developers with powerful and flexible tools to manage their media libraries. Building on that mission, we are now enabling developers to seamlessly extract audio from videos.
Async QUIC and HTTP:3 made easy- tokio-quiche is now open-source
We’re excited to announce the open sourcing of tokio-quiche, our async QUIC library built on quiche and tokio. Relied upon in our services such as iCloud Private Relay and our next-generation Oxy-based proxies, tokio-quiche handles millions of HTTP/3 requests per second with low latency and high throughput.
Explaining the Accessible Benefits of Using Semantic HTML Elements
Why should you use a semantic <button> instead of a generic <div>? Accessibility, right? By how exactly does it help accessibility?
ServiceNow and Figma launch strategic collaboration to turn design vision into enterprise transformation
AI platform, ServiceNow, and Figma announced a strategic collaboration to turn design vision into enterprise transformation.
Issue no.13: All systems go
Figma’s editorial newsletter about how products take shape—and shape our world.
GitHub Copilot CLI 101: How to use GitHub Copilot from the command line
Curious about using GitHub Copilot in your terminal? Here’s our guide to GitHub Copilot CLI, including a starter kit with the best prompts for a wide range of use cases.
TypeScript’s rise in the AI era: Insights from Lead Architect, Anders Hejlsberg
TypeScript just became the most-used language on GitHub. Here’s why, according to its creator.
Build better software to build software better
We manage the build pipeline that delivers Quip and Slack Canvas’s backend. A year ago, we were chasing exciting ideas to help engineers ship better code, faster. But we had one huge problem: builds took 60 minutes. With a build that slow, the whole pipeline gets less agile, and feedback doesn’t come to engineers until…
How AI Gateway runs on Fluid compute
The AI Gateway is a simple application deployed on Vercel, but it achieves scale, efficiency, and resilience by running on Fluid compute and leveraging Vercel’s global infrastructure.
GitHub Copilot tutorial: How to build, test, review, and ship code faster (with real prompts)
How GitHub Copilot works today—including mission control—and how to get the most out of it. Here’s what you need to know.
Six Key Components of UX Strategy — Smashing Magazine
Let’s dive into the building blocks of UX strategy and see how it speaks the language of product and business strategy to create user value while achieving company goals. Part of the Measure UX & Design Impact (use the code 🎟 IMPACT to save 20% off today).
Building a better testing experience for Workflows, our durable execution engine for multi-step applications
End-to-end testing for Cloudflare Workflows was challenging. We're introducing first-class support for Workflows in cloudflare:test, enabling full introspection, mocking, and isolated, reliable tests for your most complex applications.
Counting Customers in PostgreSQL
This blog post focuses on realtime methods of counting in PostgreSQL. This includes a use case walkthrough. Read to know more.
The Learning Loop and LLMs
LLMs are useful because they lower the threshold for experimentation. But we have to beware that we don't use them to try to shortcut the learning loop that's an essential part of a software developer's practice. We have seen this problem with tools like low-code platforms, they provide a rapid burst of initial development, but we cannot sustain them because they undermine the learning required fo
Video Invisible Watermarking at Scale
At Meta, we use invisible watermarking for a variety of content provenance use cases on our platforms. Invisible watermarking serves a number of use cases, including detecting AI-generated videos, verifying who posted a video first, and identifying the source and tools used to create a video. We’re sharing how we overcame the challenges of scaling […]
How To Leverage Component Variants In Penpot — Smashing Magazine
With component variants, design systems become more flexible, letting you reuse the same component while adapting its look or state with ease. In this article, Daniel Schwarz demonstrates how design tokens can be leveraged to manage components and their variations using Penpot, the open-source tool built for scalable, consistent design.
Building for the next wave of app monetization
Last week, Google announced that Android apps selling digital goods to US customers can now process in-app payments using third-party payment providers. Here’s a closer look at our solutions for app developers.
Build and deploy data applications on Snowflake with v0
The v0 Snowflake integration lets you build and deploy Next.js data applications with natural language. Your data stays secure in your Snowflake account.
Fresh insights from old data: corroborating reports of Turkmenistan IP unblocking and firewall testing
Cloudflare used historical data to investigate reports of potential new firewall tests in Turkmenistan. Shifts in TCP resets/timeouts across ASNs corroborate large-scale network control system changes.
Engineering a Rust optimization quiz
There are several Rust quizzes online, including one that’s literally called the “Unfair Rust Quiz” at https://this.quiz.is.fckn.gay/ , but when I was given the opportunity to record an episode of the Self-Directed Research podcast live on the main stage of EuroRust 2025 , I thought I’d come up with something special. The unfair rust quiz really deserves its name. It is best passed with a knowledg
GitHub Game Off 2025 theme announcement
GitHub’s annual month-long game jam is back for its 13th year! This November, make a game inspired by the theme WAVES—literal, digital, or emotional. 👋🏻 🌊 📡
