I design, build, and ship things for the web.
Icons, tools, client sites. Sometimes pixel art. Since 2005.
- ~1,000
- GitHub stars
- 11,000+
- icons shipped
- 26
- apps in 30 days
- 2005
- building since
Travel Search
SaaS Dashboard
Mobile App
Web3 Landing
Social Media
Mobile App
Mobile App
Login Form
Slide Deck
Mobile App
Landing Page
Flyer
Web App
NFT Artwork
Travel Search
SaaS Dashboard
Mobile App
Web3 Landing
Social Media
Mobile App
Mobile App
Login Form
Slide Deck
Mobile App
Landing Page
Flyer
Web App
NFT Artwork
Products
Things I build and ship.
Icon libraries used by thousands of developers, SaaS tools, and the occasional tool that solves one small problem well.
Pixelarticons
Hand-crafted pixel art icons for modern interfaces. 480 free, 1,400+ in Pro.
780+ GitHub stars · from €99
Majesticons
Clean, consistent icons for UI and web design. 720 free MIT icons, Figma-native.
187+ GitHub stars · from €149
NEXTLIVE.IO
AI visibility scanner for the event industry. Free scan, paid Full-Scan with a real action plan.
Built with NEXTLIVE.NOW · launched 2026
LearnSlice
Learning platform where students learn by creating and solving quizzes.
SaaS · EdTech
Work
Selected Work
Client work with numbers attached. Branding, design, code, and search, done by one person.
Existential Psychiatry
Branding, website, and SEO for a psychiatry practice. 3.2M search impressions in 16 months
Delivered full branding, design assets, website development, and SEO optimization. Built a content-rich site structured to rank for high-intent medical search queries.
search impressions
Camino Network
Design system and website for a blockchain platform. 534K search impressions
Developed a complete design system from the ground up, including branding, UI/UX design, and a modern website that bridges complex blockchain technology with accessible language.
Smella
Branding, website, and SEO for a new consumer brand. 8% CTR from organic search
Delivered branding, design assets, website development, and SEO optimization. Structured the site for search visibility from launch.
Chain4Travel
Positioned a B2B platform as the credible industry standard through brand and web
Created a sophisticated brand identity and website that communicates trust and innovation. Designed to convert enterprise clients while maintaining accessibility.
Sleap.io
Designed and branded the first native Web3 hotel booking platform
Developed a complete brand identity and design system that makes blockchain benefits clear without overwhelming users. Created an intuitive booking experience highlighting wallet rates and deals.
Testimonials
What clients say
People I have worked with, in their own words.
“Gerrit creates beautiful designs with technical know-how and a deep understanding of his work. I have had the pleasure of working with Gerrit on various projects for several years.”
Ralf Usbeck
Chairman of the Board of Directors @ Chain4Travel
“My website is clear, understandable and well structured for my customers. Even after the initial setup, Gerrit was always available and provided technical support immediately in the event of problems and always provided the latest updates.”
Ute Becker
Ernährungsberatung Ute Becker
“I really appreciate working with Gerrit, because with him I have a development partner and not just a service provider. Working together for the GrowthBox has always been customer oriented, punctual and very engaging - I thoroughly enjoyed it.”
Reinhold Rapp
CEO @ GrowthBox
“Gerrit brought a unique enthusiasm to my project that made working with him fun, energetic, and impactful. I truly felt like he was part of my team and believed in the success of my project as if it were his own. On top of it all, his design work is best in class, bringing our branding and app design to a whole new level!”
Elizabeth Graham
Founder Nutrition Intelligence
“Gerrit is dedicated to his work, responsible and delivers the work on time (or earlier). He does not hesitate to share ideas that address the needs of our customers better than we originally thought. He is communicative, creative, experienced, and professional.”
Alesia Kunts
CEO @ LearnSlice
“I have worked with Gerrit for nearly two years now and deeply appreciate his extensive knowledge, ability for creative problem-solving, professional and responsive demeanor, and the fact that he clearly cares about quality in his work.”
David Zacharias
Owner of Existential Psychiatry
“Gerrit creates beautiful designs with technical know-how and a deep understanding of his work. I have had the pleasure of working with Gerrit on various projects for several years.”
Ralf Usbeck
Chairman of the Board of Directors @ Chain4Travel
“My website is clear, understandable and well structured for my customers. Even after the initial setup, Gerrit was always available and provided technical support immediately in the event of problems and always provided the latest updates.”
Ute Becker
Ernährungsberatung Ute Becker
“I really appreciate working with Gerrit, because with him I have a development partner and not just a service provider. Working together for the GrowthBox has always been customer oriented, punctual and very engaging - I thoroughly enjoyed it.”
Reinhold Rapp
CEO @ GrowthBox
“Gerrit brought a unique enthusiasm to my project that made working with him fun, energetic, and impactful. I truly felt like he was part of my team and believed in the success of my project as if it were his own. On top of it all, his design work is best in class, bringing our branding and app design to a whole new level!”
Elizabeth Graham
Founder Nutrition Intelligence
“Gerrit is dedicated to his work, responsible and delivers the work on time (or earlier). He does not hesitate to share ideas that address the needs of our customers better than we originally thought. He is communicative, creative, experienced, and professional.”
Alesia Kunts
CEO @ LearnSlice
“I have worked with Gerrit for nearly two years now and deeply appreciate his extensive knowledge, ability for creative problem-solving, professional and responsive demeanor, and the fact that he clearly cares about quality in his work.”
David Zacharias
Owner of Existential Psychiatry
Pixel art
Pixels, one at a time.
Where Pixelarticons came from. Scenes, icons, cursors, game levels. Made in Aseprite, posted on X.
Experiments
Hot App Summer ’26
26 small apps in 30 days for Netlify’s Hot App Summer. Fast, playful, shipped.
- ☕️ Can I Sleep? Watch caffeine drain from your bloodstream on a live curve
- 🧐 Hot App Summer Quiz 10 questions, arcade initials, global board
- 🎨 MakeThemes Tweak theme variables, watch every element transform live
- 🎉 Cursor Party Room Real-time cursor party
- 😄 Talking Button Record 10 seconds, share the link, press to hear it back
- 🥵 Air Conditioned World Map Find out if you need to turn on your AC
- 🗓️ ICS Event Maker Make a calendar event, all in your browser
- 🤯 You can do it with Netlify Ten building blocks, zero jargon
- 🗺️ Timezone Overlap Find when your distributed team is actually awake
- 🤖 Impossible CAPTCHA You're a robot anyway, try again forever
- 🧑💻 Codertyper Mash keys, type flawless code, prank your screen-share
- 🎧 Focus Sounds Blend your own focus mix, set it and forget it
- ⏰ Easy Countdown A live countdown to any moment, shareable by link
- 🛠️ #HotAppSummer Widget Your apps as a floating button on any site
- 🩻 Subscription Autopsy Dissect the subscriptions bleeding you dry
- 👻 Ghostletter Messages no server ever sees, they live only inside a link
- 🌎 Cosmic Clutter Tap a live 3D Earth, see what's overhead right now
- ⏳ How Long Does It Last? Snapchat views to Greenland sharks on one scale
- 🆎 Type Specimen Playground The contact sheet for Google Fonts
- 🗓️ Your Life in Weeks Every box is one week of your life
- 🕵️♂️ Metadata Detective Expose the hidden trail your photos leak
- 🔐 Privacy Reveal How much websites track you, zero prompts
- ⛱️ Out of Office Generator A vacation auto-reply worth screenshotting
- 🪦 Side Project Graveyard A grand monument of code left to crumble
- 🌶️ README Roaster Brutal-but-helpful AI critique of your README
- 🤑 Meeting Cost Ticker This could have been a Slack thread...
Process
How it works
You tell me what you need
A 30-minute call or an email. I tell you straight if I am the right person for it.
I design and build it
Focused sprints, 2 to 4 updates per week. You see real progress, not a big reveal at the end.
We ship
Live, fast, and findable by Google and AI search. Then I stick around, or hand off clean. Your call.
FAQ
Common questions
What do you actually do?
Websites, web apps, design systems, branding, icons, and GEO/SEO. Design and code from one person, so nothing gets lost between a designer, a developer, and an SEO consultant.
How fast can you move?
Most projects take 1 to 3 months from start to launch, with 2 to 4 updates per week. Small things ship in days.
What do you not do?
Long decks, endless discovery phases, and designs that never ship. I also do not do ads or social media management.
About
Gerrit Halfmann, aka halfmage
Designer and developer in one person. I have been making things for the web since 2005: icon libraries used by thousands of developers, small tools, SaaS products, and client sites with real numbers behind them. Pixel art when the day is long enough.
More about me