MockupX

What it does

Turn screenshots into beautiful browser, iPhone, Android, MacBook, iPad, social media, App Store, and Google Play mockups. Paste or upload media and export exact-size PNG,JPEG or WebP files.

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  ScreenSpace Mockup2019 · ▲354

  Free photo-real 3D mockups from over a dozen popular devices

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  Screenshot Rocks2020 · ▲193

  Beautiful browser & mobile mockups in one click

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  Magic Mockups2014 · ▲120

  Place your product screenshot in real-life environment

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  Screenshot Creator2020 · ▲147

  Create stunning App Store and Google Play marketing assets

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  MockuPhone2014 · ▲153

  Easily wrap app screenshots in devices

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  Mock2019 · ▲355

  Instantly create video mockups from screen recordings

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  AstraPixels▲267

  ​​A pixel-art solar system at its real current positions.​

  Growth · 29d ago · astrapixels.com

• 
  WorldMap.lol▲197

  Put your startup on the map. Literally.

  Growth · 13d ago · worldmap.lol

• TL
  The load-bearing vocabulary of Claude▲703

  Life & fun · 10d ago · louisabraham.github.io

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  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

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  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• SA
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

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  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026

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  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 16d ago · simedw.com