Marcin Krzyzanowski
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krzyzanowskim.com
Marcin Krzyzanowski
@krzyzanowskim.com
 unrelated. I'm here for bugs. https://CryptoSwift.io
Founder https://swiftstudio.app, https://notepadexe.com 🛠 TextKit and text editor passionate

iOS @ goodnotes.com

https://swift.best
I'm a simple boy who likes simple, predictable tools.
December 28, 2025 at 2:15 PM
I spent months building a code editor notepadexe.com, and the feature people are most excited about is... copying images to the clipboard

⌘⌥C your code. Paste a masterpiece. Your Keynote will never look the same.
December 22, 2025 at 3:37 AM
Reposted by Marcin Krzyzanowski
The weekend before Christmas Eve is here. What better time to decorate your Mac with festive lights and falling snow? 🎄❄️

Get Festivitas for Mac (and iPhone) 👇

festivitas.app
December 19, 2025 at 2:42 PM
Reposted by Marcin Krzyzanowski
🤔
November 22, 2025 at 9:51 AM
Visual Basic IDE (1991) revolutionized programming. It democratized it, until JS-based web frameworks un-democratized it two decades later #programming

- Visual designer (no code needed)
- BASIC (no coder needed)
- Fast (no expensive computer)
- AllInOne (no sophisticated build process needed)
December 14, 2025 at 1:48 PM
When I grow up I want to raise corporate profit margins through cost-cutting measures and revenue-optimization strategies!
December 11, 2025 at 12:31 AM
💡paywall idea: solve LeetCode hard problem to continue without buying the license
December 1, 2025 at 10:35 AM
November 18, 2025 at 10:38 AM
I want to hire xslt.rip designer to improve the notepadexe.com website! now!
https://xslt.rip/
<?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet href="/index.xsl" type="text/xsl"?> <html> <head> <title>XSLT.RIP</title> </head> <body> <h1>If you're reading this, XSLT was kill...
xslt.rip
November 10, 2025 at 8:50 PM
designed by human intelligence in california

"what's wrong with this?" prompt is very much on point, by accident
November 6, 2025 at 8:46 AM
the perfect app switched UX already existed, and you killed it. Now I have to reach top corner to access controls
November 2, 2025 at 10:12 PM
10
12
17
October 28, 2025 at 8:43 PM
and the winners of the quiz gets the CD box with notepadexe.com as a prize!
truly collectible artifact
October 21, 2025 at 10:01 PM
I use Firefox btw
October 21, 2025 at 8:55 PM
Nervanna is the name of my next project
October 19, 2025 at 7:58 PM
It is 100% more fun coding AI than using AI for coding #notepadexe
September 30, 2025 at 9:56 PM
LOL my kids and their friends use google summary/chatgpt as a comedy standup. they have a laugh about the nonexistent facts it spills out about popculture
September 29, 2025 at 10:15 AM
current status: math, I don't want to solve your problems. I have my own.
September 27, 2025 at 9:21 PM
everything about this window UX is bad, but figuring out how to move the window is pineaccle of bad UX: there is part that looks like everything else, but when dragged moves window, the other place that looks identically interact with the items
September 27, 2025 at 8:56 PM
Reposted by Marcin Krzyzanowski
Indie developers (myself included 😐) will do as much work as possible to avoid doing the slightest bit of marketing work.
September 22, 2025 at 1:52 PM
notepadexe.com classic edition
September 15, 2025 at 9:33 PM
send the term sheets #vc #funding #startup
September 14, 2025 at 12:12 AM
over the last few days, I learned more about LLM prompting than I needed in my life.

main lesson learned: each model is different.

to understand how to prompt it, you have to:
- read the research document of the model
- check, and do not discard for chat template (usually) attached to the model
September 12, 2025 at 8:44 PM
how conveniently Russia decided to attack Poland during Apple Keynote. The history of announcing unpopular or bad news during apple keynote has long history. Now Putin has joined the infamous list. apnews.com/article/russ...
NATO scrambles jets to shoot down Russian drones in Poland, raising fears of war spillover
Multiple Russian drones crossed into Poland in what European officials described as a deliberate provocation, causing NATO to send fighter jets to shoot them down.
apnews.com
September 10, 2025 at 5:03 PM
my hair grows on company time

I should be able to have haircuts on company time too
September 9, 2025 at 7:51 PM