Edit visually
Grab UI regions, draw, erase, add text and shapes, or hide private information.
Prompt Canvas for Windows
Show the change. Hand off the intent.
Prompt Canvas turns UI screenshots into precise, structured instructions for AI agents and developers—without forcing you to explain every pixel in a long prompt.
US$29.99One-time purchase
Windows 1164-bit desktop app
Local-firstEdit without an AI connection
English + JapaneseBilingual interface
Why it exists
Screenshots show a problem.
Prompt Canvas shows the solution.
Move, resize, duplicate, annotate, blur, and organise visible UI changes. Add priorities, reasons, and acceptance criteria. Then export a prompt, structured JSON, annotated image, report, or complete handoff ZIP.
Capture intent
Record the before state, desired result, priority, rationale, and acceptance criteria.
Hand off cleanly
Package human-readable visuals with machine-readable change data for the next tool.
Designed for real work
From visual feedback to an implementation-ready package.
Use the output with ChatGPT, Claude, Gemini, Codex, another agent, or a human developer. Optional direct AI analysis is experimental; the supported authoring and export workflow works locally.
Prompt Canvas 1.0.0
Make the last 20% understandable.
A focused Windows workspace for founders, designers, product managers, developers, QA teams, support teams, and clients who need to communicate visual changes precisely.