Stitch Downloader

Quick start (googleusercontent)

Use scripts/download-googleusercontent.sh to force full-resolution downloads from lh3.googleusercontent.com by appending =w{width}-h{height}.

./skills/stitch-downloader/scripts/download-googleusercontent.sh \
  "$SCREENSHOT_URL" \
  2560 \
  2048 \
  "docs/stitch/exports/2026-02-23--p123/wt-01--p123--sabc123--2560x2048.png"

• Pass the canvas size (not the viewport size). If you don’t know it, fetch screen metadata first.
• The script prints a short SHA256 fingerprint of the URL so you can correlate downloads without saving the signed URL.

MCP-assisted flow (from ids)

If you have MCP tools for Stitch available, fetch the screenshot.downloadUrl and canvas dimensions first, then download.

1. List screens and pick a screenId:

• mcp__stitch__list_screens({ projectId: "<project_id>" })

2. Fetch metadata for that screen:

• mcp__stitch__get_screen({ projectId: "<project_id>", screenId: "<screen_id>", name: "projects/<project_id>/screens/<screen_id>" })

3. Use the returned canvas width/height with the downloader script.

Guardrails

• Do not commit signed URLs (including screenshot.downloadUrl) to git.
• Commit only the downloaded image file(s) if the user wants them checked in.