Marek Fišera
@mara.neptuo.com
Engineer @microsoft.com working on .NET on WebAssembly & Blazor
Also github.com/maraf & twitter.com/marekfisera
Also github.com/maraf & twitter.com/marekfisera
Reposted by Marek Fišera
Tired of slow .NET setup in GitHub Actions?
I built a fast, performant alternative to actions/setup-dotnet with parallel downloads, caching & smart version resolving.
github.com/fast-actions...
We‘re using this Action @scalar.com and reduced the execution time from 24s to 2s!
I built a fast, performant alternative to actions/setup-dotnet with parallel downloads, caching & smart version resolving.
github.com/fast-actions...
We‘re using this Action @scalar.com and reduced the execution time from 24s to 2s!
GitHub - fast-actions/setup-dotnet: High-performance GitHub Action for .NET SDK and Runtime installation with parallel downloads, caching, and intelligent version resolution
High-performance GitHub Action for .NET SDK and Runtime installation with parallel downloads, caching, and intelligent version resolution - fast-actions/setup-dotnet
github.com
January 19, 2026 at 3:34 PM
Tired of slow .NET setup in GitHub Actions?
I built a fast, performant alternative to actions/setup-dotnet with parallel downloads, caching & smart version resolving.
github.com/fast-actions...
We‘re using this Action @scalar.com and reduced the execution time from 24s to 2s!
I built a fast, performant alternative to actions/setup-dotnet with parallel downloads, caching & smart version resolving.
github.com/fast-actions...
We‘re using this Action @scalar.com and reduced the execution time from 24s to 2s!
Reposted by Marek Fišera
Ready for the first cool demo of the year?
A mini Mario world with keyboard control. Yes, you can move Mario and also jump! 👀
Demo: codepen.io/t_afif/full/... via @codepen.io
✔️ 100% CSS Magic
✔️ Minimal HTML
❌ 0% JavaScript
A Chrome-only experimentation using modern CSS.
A mini Mario world with keyboard control. Yes, you can move Mario and also jump! 👀
Demo: codepen.io/t_afif/full/... via @codepen.io
✔️ 100% CSS Magic
✔️ Minimal HTML
❌ 0% JavaScript
A Chrome-only experimentation using modern CSS.
January 2, 2026 at 1:39 PM
Ready for the first cool demo of the year?
A mini Mario world with keyboard control. Yes, you can move Mario and also jump! 👀
Demo: codepen.io/t_afif/full/... via @codepen.io
✔️ 100% CSS Magic
✔️ Minimal HTML
❌ 0% JavaScript
A Chrome-only experimentation using modern CSS.
A mini Mario world with keyboard control. Yes, you can move Mario and also jump! 👀
Demo: codepen.io/t_afif/full/... via @codepen.io
✔️ 100% CSS Magic
✔️ Minimal HTML
❌ 0% JavaScript
A Chrome-only experimentation using modern CSS.
Reposted by Marek Fišera
Tech is in an interesting place where some of the most accomplished engineers in the industry now say their job is now just telling AI to write all the code, debug it and fix the bugs.
Some of this is marketing hype from people who are selling AI tools (Boris works on Claude Code) but it rings true
Some of this is marketing hype from people who are selling AI tools (Boris works on Claude Code) but it rings true
December 27, 2025 at 5:44 PM
Tech is in an interesting place where some of the most accomplished engineers in the industry now say their job is now just telling AI to write all the code, debug it and fix the bugs.
Some of this is marketing hype from people who are selling AI tools (Boris works on Claude Code) but it rings true
Some of this is marketing hype from people who are selling AI tools (Boris works on Claude Code) but it rings true
Reposted by Marek Fišera
Another winter break coding side quest...
I created a CLI tool called "burrow" for managing local secrets, inspired by `dotnet user-secrets`. But, it’s a standalone executable and it uses SQLite instead of JSON as the backing store.
Check it out at safia.rocks/burrow/ 🐰
I created a CLI tool called "burrow" for managing local secrets, inspired by `dotnet user-secrets`. But, it’s a standalone executable and it uses SQLite instead of JSON as the backing store.
Check it out at safia.rocks/burrow/ 🐰
December 27, 2025 at 5:09 PM
Another winter break coding side quest...
I created a CLI tool called "burrow" for managing local secrets, inspired by `dotnet user-secrets`. But, it’s a standalone executable and it uses SQLite instead of JSON as the backing store.
Check it out at safia.rocks/burrow/ 🐰
I created a CLI tool called "burrow" for managing local secrets, inspired by `dotnet user-secrets`. But, it’s a standalone executable and it uses SQLite instead of JSON as the backing store.
Check it out at safia.rocks/burrow/ 🐰
Reposted by Marek Fišera
Infragistics just made 50+ Ignite UI components available for free and open-source! Support for Angular, React, Web Components, and Blazor: www.infragistics.com/blogs/open-s...
#blazor #dotnet #IgniteUI
#blazor #dotnet #IgniteUI
Ignite UI Releases 50+ Powerful Open-Source Components
We are empowering the open-source community by offering a set of 50+ open-source components across Angular, React, Blazor, and Web Components. Explore all.
www.infragistics.com
December 17, 2025 at 12:58 AM
Infragistics just made 50+ Ignite UI components available for free and open-source! Support for Angular, React, Web Components, and Blazor: www.infragistics.com/blogs/open-s...
#blazor #dotnet #IgniteUI
#blazor #dotnet #IgniteUI
Reposted by Marek Fišera
New reference article detailing lots of info about running C# file-based apps via `dotnet run` now available! Makes for great input to a coding agent when working on file-based apps.
learn.microsoft.com/dotnet/core/...
learn.microsoft.com/dotnet/core/...
File-based apps - .NET
Learn how to create, build, and run C# applications from a single file without a project file.
learn.microsoft.com
December 19, 2025 at 8:02 PM
New reference article detailing lots of info about running C# file-based apps via `dotnet run` now available! Makes for great input to a coding agent when working on file-based apps.
learn.microsoft.com/dotnet/core/...
learn.microsoft.com/dotnet/core/...
Reposted by Marek Fišera
Out now: The Microsoft Fluent UI #Blazor library v4.13.2! Maintenance release with .NET 10 support, Templates fixes, and about a dozen other PRs
Details at fluentui-blazor.net/WhatsNew. Packages are on NuGet. Now back to getting a v5 RC out of the door...
Details at fluentui-blazor.net/WhatsNew. Packages are on NuGet. Now back to getting a v5 RC out of the door...
Fluent UI Blazor Documentation & Demo site
Microsoft Fluent UI Blazor library. For use with ASP.NET Core Blazor applications
fluentui-blazor.net
November 27, 2025 at 7:00 PM
Out now: The Microsoft Fluent UI #Blazor library v4.13.2! Maintenance release with .NET 10 support, Templates fixes, and about a dozen other PRs
Details at fluentui-blazor.net/WhatsNew. Packages are on NuGet. Now back to getting a v5 RC out of the door...
Details at fluentui-blazor.net/WhatsNew. Packages are on NuGet. Now back to getting a v5 RC out of the door...
Reposted by Marek Fišera
Let me invite you to our last #dotnet Meetup this year.
We have 3 great talks prepared for you, and of course food.
📍 Microsoft Office (Delta Building, Vyskočilova 1561/4a, Prague 4)
📅 Monday, December 8, 2025
🕗 5.30pm - 9.00pm
English, Free entry
www.meetup.com/microsoft-ev...
We have 3 great talks prepared for you, and of course food.
📍 Microsoft Office (Delta Building, Vyskočilova 1561/4a, Prague 4)
📅 Monday, December 8, 2025
🕗 5.30pm - 9.00pm
English, Free entry
www.meetup.com/microsoft-ev...
Talk .NET with .NET Team: December Edition, Mon, Dec 8, 2025, 5:30 PM | Meetup
We’re wrapping up the year with a supercharged **December edition** of **Talk .NET with .NET Team meetup series**! 🚀🎄 Get ready for an evening full of performance insight
www.meetup.com
November 28, 2025 at 4:17 PM
Let me invite you to our last #dotnet Meetup this year.
We have 3 great talks prepared for you, and of course food.
📍 Microsoft Office (Delta Building, Vyskočilova 1561/4a, Prague 4)
📅 Monday, December 8, 2025
🕗 5.30pm - 9.00pm
English, Free entry
www.meetup.com/microsoft-ev...
We have 3 great talks prepared for you, and of course food.
📍 Microsoft Office (Delta Building, Vyskočilova 1561/4a, Prague 4)
📅 Monday, December 8, 2025
🕗 5.30pm - 9.00pm
English, Free entry
www.meetup.com/microsoft-ev...
Reposted by Marek Fišera
🚀 After validating on the .NET 10 SDK, the first stable release of "Find Razor Source File" is live!
github.com/jsakamoto/Fi... #blazor
Streamline your Blazor development: jump straight from any clicked element in your browser to the exact `.razor` file in Visual Studio or VS Code!
github.com/jsakamoto/Fi... #blazor
Streamline your Blazor development: jump straight from any clicked element in your browser to the exact `.razor` file in Visual Studio or VS Code!
November 26, 2025 at 7:00 AM
🚀 After validating on the .NET 10 SDK, the first stable release of "Find Razor Source File" is live!
github.com/jsakamoto/Fi... #blazor
Streamline your Blazor development: jump straight from any clicked element in your browser to the exact `.razor` file in Visual Studio or VS Code!
github.com/jsakamoto/Fi... #blazor
Streamline your Blazor development: jump straight from any clicked element in your browser to the exact `.razor` file in Visual Studio or VS Code!
Reposted by Marek Fišera
Got nerd-sniped on a saturday morning github.com/DamianEdward...
GitHub - DamianEdwards/RazorTemplates: Experiment creating templating extensions for Razor Copmonents
Experiment creating templating extensions for Razor Copmonents - DamianEdwards/RazorTemplates
github.com
November 22, 2025 at 10:52 PM
Got nerd-sniped on a saturday morning github.com/DamianEdward...
Reposted by Marek Fišera
Announcing Oqtane 10.0.0 for .NET 10! This is a major release including Passkey support, improvements to the Oqtane Application Template, etc... 77 pull requests by 6 contributors. www.oqtane.org/blog/!/132/a... #blazor #oqtane
November 17, 2025 at 2:05 PM
Announcing Oqtane 10.0.0 for .NET 10! This is a major release including Passkey support, improvements to the Oqtane Application Template, etc... 77 pull requests by 6 contributors. www.oqtane.org/blog/!/132/a... #blazor #oqtane
Reposted by Marek Fišera
One thing I started noticing recently is that competent engineers give up their credibility due to AI.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
November 15, 2025 at 12:40 AM
One thing I started noticing recently is that competent engineers give up their credibility due to AI.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
Twice already highly competent engineers I respect sent a PR that turned out to have very subtle issues. These issues would not be possible if a human understood it.
Reposted by Marek Fišera
Danny Moerkerke - The State Of PWAs
YouTube video by Frontendisti
youtu.be
November 12, 2025 at 3:17 PM
Reposted by Marek Fišera
New blog post:
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
How to Quickly Test Your Blazor App on a Real Smartphone
Using Dev Tunnels to Access Your Development App from Your Phone via the...
dev.to
November 10, 2025 at 8:53 AM
New blog post:
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
"How to Quickly Test Your Blazor App on a Real Smartphone"
dev.to/j_sakamoto/h... #blazor
Reposted by Marek Fišera
Hey #dotnet, would you like it if #msbuild (and dotnet build, etc) natively integrated with your CI/CD pipelines for integrated warning/error reporting and such? I've vibe-coded some stuff here that might be interesting to folks: github.com/dotnet/msbui...
November 8, 2025 at 5:20 PM
Hey #dotnet, would you like it if #msbuild (and dotnet build, etc) natively integrated with your CI/CD pipelines for integrated warning/error reporting and such? I've vibe-coded some stuff here that might be interesting to folks: github.com/dotnet/msbui...
Reposted by Marek Fišera
Kubernetes is the sum of all the shell scripts, and practices, system administrators have cobbled together over time, presented as a single system behind a declarative set of APIs.
November 6, 2025 at 1:11 PM
Kubernetes is the sum of all the shell scripts, and practices, system administrators have cobbled together over time, presented as a single system behind a declarative set of APIs.
November 5, 2025 at 7:33 PM
Reposted by Marek Fišera
Reposted by Marek Fišera
We have progressed from data collection to data analysis.
November 1, 2025 at 12:31 AM
We have progressed from data collection to data analysis.
Reposted by Marek Fišera
GeoBlazor 4.3 Is Here! Smarter Auth and Powerful New Layers!
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
🚀 GeoBlazor 4.3 Is Here with Smarter Auth and Powerful New Layers!
GeoBlazor 4.3 introduces smarter authentication, new layer views, and powerful enhancements for developers. Upgrade now for a seamless mapping experience.
hubs.li
October 19, 2025 at 4:41 AM
GeoBlazor 4.3 Is Here! Smarter Auth and Powerful New Layers!
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
✨ Highlights:
🔐 Simplified OAuth setup
🧩 ExpandWidget groups
🌍 OGCFeature Layers
🎨 WebStyleSymbol
🧠 New Token Refresh sample code
🐞 Bug fixes and quality improvements across the board
hubs.li/Q03MGy8B0
Reposted by Marek Fišera
🚀 Uno Platform 6.3 is LIVE
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
October 9, 2025 at 2:56 PM
🚀 Uno Platform 6.3 is LIVE
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
• .NET 10 RC 1 support
• Visual Studio 2026 ready (.slnx + side-by-side)
• WebAssembly image decoding moved to WebWorkers
• Hot Design updates for even faster UI edits
• TabView reliability + new sizing modes
Read the full release blog
Reposted by Marek Fišera
🚀 Blazing Story v1.0.0 Preview 60 is here!
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
GitHub - jsakamoto/BlazingStory: The clone of "Storybook" for Blazor, a frontend workshop for building UI components and pages in isolation.
The clone of "Storybook" for Blazor, a frontend workshop for building UI components and pages in isolation. - GitHub - jsakamoto/BlazingStory: The clone of "Storybook" for Blaz...
github.com
October 1, 2025 at 12:40 PM
🚀 Blazing Story v1.0.0 Preview 60 is here!
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
github.com/jsakamoto/Bl... #Blazor
✨ What's new:
- Docs menu added to settings (just like Storybook!)
- UI updated to match Storybook v9 design
- Enhanced visual polish throughout
Your 100% Blazor Storybook clone keeps getting better!🔥
Reposted by Marek Fišera
.NET 10 includes several performance enhancements.
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET
September 16, 2025 at 1:10 PM
.NET 10 includes several performance enhancements.
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET
Join us TODAY at 10AM PT for today's #ASPNET Community Standup as we review the improvements in .NET 10 for WebAssembly, which helps Blazor WebAssembly apps run faster than ever!
See you on the livestream: msft.it/63327slN9S
#dotNET