White screen debug

Skill swd3k/skills/agent-skills/workflows/white-screen-debug

Diagnose blank/white UI in web and desktop webview apps with a ordered checklist. Use when the window opens empty, CSS fails, or only HTML shell shows.From its SKILL.md

Install

npx -y skills add swd3k/skills --skill white-screen-debug

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

0 stars0 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

1.0 KB, 207 tokens by cl100k_base, as published. Nobody here has run it

White Screen Debug

Ordered checks

Process alive? window opened, no crash loop
URL / load method — file://, https://, data, LoadRawString
DevTools console — first exception wins
Network/assets — CSS/JS 404 or blocked
Path packing — works in dev, fails in publish (cwd, case, asar)
WebView2 / browser runtime installed?
CSP blocking inline or file scripts?
Theme — white text on white? (not true white screen but looks empty)

Photino-specific

file:// primary for multi-file UI
raw string requires inlined CSS
Log absolute path passed to Load

Fix pattern

Minimal repro HTML (red body background) to prove paint works
Then reintroduce CSS/JS layers

Acceptance

Root cause named; regression note added

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.