Claude Code mod
visual-diff
Compares the browser screenshots Claude takes of the same URL at the same size, before and after an edit: both side by side, a map of the cells that changed, the changed regions in page pixels and the files edited in between; /vdiff
Install
/plugin marketplace add simota/claude-mods
/plugin install visual-diff@simota-modsMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, drives Claude, reads files, reads env vars, reads mod state, draws
- Sees
- every tool call
- Draws in
Pane- Hooks
session.startsession.endtool.callcommand.runui.render
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- simota/claude-mods
- Folder
mods/visual-diff- Marketplace
simota-mods- Author
- simota
- License
- MIT
- Last updated
- 8 November 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is visual-diff?
Compares the browser screenshots Claude takes of the same URL at the same size, before and after an edit: both side by side, a map of the cells that changed, the changed regions in page pixels and the files edited in between; /vdiff It is a mod for Claude Code, from simota/claude-mods on GitHub.
What can the visual-diff mod access?
Its widest reach is "writes or runs" (runs processes, drives Claude, reads files, reads env vars, reads mod state, draws). It sees every tool call. It draws in Pane. Like any mod, it runs with your permissions.
How do I install visual-diff?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add simota/claude-mods and then /plugin install visual-diff@simota-mods.
Is visual-diff popular?
simota/claude-mods has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 8 November 2026.
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