DiffDeck

Diffdeck

[](https://www.npmjs.com/package/@parthj/diffdeck)

Open a Git diff in your browser from the terminal.


`diffdeck` starts a local web UI for the diff you ask Git for, then opens it in your browser. Use it when:

• You do not have a diff view where you are editing.
• git diff in the terminal is too hard to read.
• You are SSHed into a server and still want a clean visual review.

Optionally, you can comment on changed lines and copy all of them at once for your AI to resolve — the surrounding code context goes with them, so the agent has everything it needs to act.

Agentic Setup

Tell your coding agent (Claude Code, Cursor, etc.):

Install `@parthj/diffdeck` globally with `npm install -g @parthj/diffdeck`, then add `alias gd='diffdeck'` to my shell rc file. Run `gd` whenever I ask you to show me a diff.

Install

npm install -g @parthj/diffdeck

The package is scoped, but the installed command is `diffdeck`.

To update to the latest version:

npm install -g @parthj/diffdeck@latest

(`npm update -g` won't bump globally-installed packages because they're pinned to an exact version at install time.)

Make It A Drop-In

Diffdeck accepts the same diff arguments, so the simplest setup is a shell alias:

alias gd='diffdeck'

Then use it like `git diff`:

gd
gd --cached
gd HEAD~1 HEAD

Use It Like Git Diff

diffdeck
diffdeck --cached
diffdeck HEAD~1 HEAD
diffdeck -- -- '*.tsx'

Everything after Diffdeck's own options is passed through to `git diff` as long as it still produces plain patch output. Summary-only modes such as `--stat`, `--name-only`, `--raw`, and `--no-patch` are rejected because there is no file patch for the browser to render.

Options

Option	What it does
`--repo <pa