CopyToLLM
One hotkey to capture any screen region and auto-paste it into ChatGPT, Claude, or Gemini - image + prompt, zero friction.
CopyToLLM is a background Windows utility that captures any screen region and delivers it straight to your favorite AI chat - fully automated.
Press Ctrl+Shift+S anywhere - a snipping overlay appears - drag a region (or click for auto-element detection, Alt+Click for scroll capture, double-click for full screen) - pick ChatGPT, Claude, or Gemini - the tool opens Chrome, pastes the image, and types an analysis prompt. All in one flow.
The scroll capture engine is the crown jewel: it auto-scrolls any UI element, captures each frame, and pixel-stitches them into one seamless full-length screenshot using MAE matching. Works on code editors, web pages, chat logs - anything scrollable.
Built it because I got tired of screenshot, save, open AI, upload, type prompt, wait. Now it is one hotkey. Zero NuGet dependencies, pure .NET 9 + Win32 interop.