Ryan Feigenbaum

This is beautiful.

Another look at my custom web component share button: ryanfeigenbaum.com/building-sha...

Mira Schendel Untitled from the series Typed Writings (Datiloscritos), 1974

Audio UIs are like the seed vault for the Skeuomorphism. There will be draughts, but eventually the rain season comes and it springs back to life. colorpalette.pro by @ryanfeigenbaum.com #UIDesign

This color palette maker is beautiful! colorpalette.pro?color=oklch%...

Thank you, Ryan! ☺️🙏🏻 The UI is seriously gorgeous and works fantastic on mobile too (which isn't very common for tools like this). I'm impressed back!

Okay, this is fun, and brings me back to some neumorphism nostalgia: a fun color palette generator, that lets you play with different color spaces, and build different palettes type colorpalette.pro/?color=lab%2...

Side projects are weird. My ColorPalette Pro went from crickets to having a color named after me 🤩 (thanks to @meodai.bsky.social). Here's the story: ryanfeigenbaum.com/how-i-got-a-...

Love this shout out! I've followed @sarasoueidan.com's work forever and it's always been fantastic. Definitely worth checking out.

The new winner of the color generators is here. This tool is just insanely cool! Thank you @ryanfeigenbaum.com , incredible project! colorpalette.pro #css

So cool to see this!

Today, my #JSNationUS talk on scaling feature flags premieres at 11:35 EST. Check out the abstract 👇 gitnation.com/contents/whe... Happy to share some of the resources I mention in the talk if interested.

Down with the slickness

This is unbelievably good on so many levels. Wondering if I might ask what it uses to do the conversions. Culori?

At #JSNationUS, so find me if you wanna chat about feature flags, experimentation, bourbon, philosophy, dogs, tacos, piano, home improvement, or colors.

At first, I thought I could just rotate the hue of HSL colors and call it a day. Since then, I've learned about perceptual color spaces, OKLCH, Bezold-Brücke effect and I still can't always get good programmatic palettes 😅 But I built Color Palette Pro to help get us halfway there: colorpalette.pro

Graham and Ryan demo all the new AI-powered features recently released in GrowthBook. The best part? Every AI prompt is fully customizable. Want results in haikus? Different language? Your company's tone of voice? You control it all. youtu.be/jhyGxknbGk0

My site has a playable iPod and here's how I did it ryanfeigenbaum.com/does-your-we...

Can't believe it's been 10 years since Carrie & Lowell. I resonate with this, I think: "I find as I get older, experience makes fools of us all—I feel kind of stupider and less prepared for what life brings me in a lot of ways.... I'm just becoming more zen" www.npr.org/2025/05/27/1...

I got tired of manually figuring out `sizes` attributes for responsive images, so I built a CLI tool to do it automatically 🤖 ryanfeigenbaum.com/size-your-im...

I built an MCP Server for GrowthBook ✨ it's early days, but the possibilities are incredible.

This MCP Server is truly useful and makes feature flag management so much easier.

How do you know your feature actually works in prod? Use Safe Rollouts to catch regressions early, letting you ship faster and more confidently 💪

Some days, experiments can't be clearer: ship, ship, ship. Other days, though, they don't give you a clear answer. They give you context, nuance, trade-offs. Our Experiment Decision Framework (EDF) helps cut through the noise, so you can make a more confident decision. Here's how it works 🧵

May the Force (rule) be with you. #MayThe4thBeWithYou

GrowthBook 3.6 is live - Safe Rollouts for metric-guarded launches - Time Series View in experiment results - Official Jira Integration to keep the PMs happy - Decision Framer Events/API for custom workflows - Dev Tools for SSR apps (yep, backend friendly now) - JSON column support in Fact Tables

Are you teaching to the test? Breeding cobras? Letting the measure become the target? Goodhart's Law reminds us, "When a measure becomes a target, it ceases to be a good measure." This comes up all the time in A/B testing and experimentation.

Who wore it better? Frank or Mel?

I’m super excited about `text-wrap: pretty`. It does a lot more to improve typography than you might expect — at least in Safari Technology Preview 216. It improves all lines of text, not just the last 4. It enhances hyphenation & rag, not just avoiding short last lines. webkit.org/blog/16547/b...

I'm speaking today at #KubeCon London, as part of the #OpenFeature summit. Come hear my talk, Beyond Boolean, where I discuss some of the challenges teams face when flagging at scale and how we help you solve those problems at @growthbook.io

This meeting could've been an email. And that email could've been a slack message. And that slack message could've been whispered quietly into a well.

Shareception! The share button I built, in action on my website, being used to share a blurb about the share button. ryanfeigenbaum.com/share-this-s... #webcomponents

Our Dev Tools have been completely revamped for easier debugging and testing of feature flags and experiments. The update simplifies understanding user assignments to specific variations and is now available on both Chrome and Firefox! 🛠️

The first Senators to actually do anything about the Trump admin

Cincinnati

Yes, this administration is dangerous and cruel, but they are also shockingly dim and incompetent. Opportunities are everywhere. Make everything as hard as possible. Resist every demand. Refuse entry without a warrant. Don’t take the buyout. Their problem solving skills are 📉

Stop compromising between customization & convenience. With Custom Fields and Pre-Launch Checklists, you get all the power of a totally bespoke experimentation platform—without having to build it yourself

DECEMBER 22, 1951 ARTIST: Will Cotton ADVERTISEMENT: Old Grand-Dad | | | | | #newyorkercovers #newyorker #newyorkermag #illustration #1951 #willcotton #christmaspageant #backstage #curtain #vintageads #oldgranddad #kentucky #bourbon #kentuckybourbon #whisky

My listens in 2024. What's not included: Spending 5 minutes looking for something to play and then forgetting to ever to hit play 😂

🚀 Bandit Speedrun Challenge! Launched Bandits in GrowthBook last week, so we had to test: how fast can you go from zero to a live experiment? ⏱️ Our time: under 4 minutes. Think you can beat it? 🕹️ Test your speed 👉 https://bit.ly/4g2OZbH Experimentation just got fun.

Do you know Twyman's Law? It says that if your results stand out or are surprising, then it's likely due to an error in data collection, analysis, or interpretation. It's a reminder to be skeptical when the results seem too good to be true. Womp womp. #statsky #datascience

Do yo know these 9 common pitfalls that can sink your experimentation program? A thread on why A/B testing programs fail (and how to fix them) 🧵

No, it’s not just you. As a product of the Great Lakes region (Youngstown → SE MI → Lansing → Columbus → Cincinnati → Lansing → Cincinnati), the patterns, temperatures, and rhythms of the season feel unmistakably altered. Graphic via @climatecentral.bsky.social #climatesky #energysky

Missing imports are always annoying. Can't my editor just fix that for me? Actually, it can and it's pretty good at it. In VS Code: "editor.codeActionsOnSave": { "source.addMissingImports": "always" } Now, missing imports are added automatically on save. Don't know why it took me so long

Multi-armed bandits are changing the way we experiment! Whether you're testing 8 designs for a button or running a flash promotion, bandits balance exploration & exploitation for faster optimization. Learn how we avoid biases & ensure a seamless user experience: blog.growthbook.io/introducing-...

@ishadeed.com articles are always with a read, and this one is no different.

Bandits is a go! We're excited to launch multi-arm bandits in our latest release (3.3). With bandits, we dynamically allocate traffic to maximize efficiency, sending more visitors to better-performing variations over time. Visit our blog post to learn more: blog.growthbook.io/growthbook-v...