Open any Git change from your terminal.

The installer places ddd in ~/.local/bin, adds the directory to your login shell’s profile when necessary, and installs the ddc, ddu, ddp, and ddb shortcuts. Running it again updates the command.

curl -fsSL https://diffdump.com/install | bash

The installer verifies the downloaded command with SHA-256 before replacing an existing installation. You can inspect the served installer and ddd command before running them. The command requires Bash 3.2 or newer, Git, and curl. ddd pr and default-branch detection additionally require the GitHub CLI (gh).

ddd opens the URL automatically on macOS and prints it everywhere else. Run ddd help for the command’s built-in reference.

The CLI is a convenience wrapper around Diffdump’s HTTP endpoint. Send any unified diff with an HTTP PUT request; a successful upload returns the unlisted review URL as plain text.

git diff | curl -T- https://diffdump.com/d

Add Git’s --cached flag to review what the next commit will contain.

git diff --cached | curl -T- https://diffdump.com/d

Render the latest commit as a patch without the commit message, then upload it.

git show --format= --patch HEAD | curl -T- https://diffdump.com/d

Because the response is plain text, it can be passed directly to another command. On macOS:

git diff | curl -T- https://diffdump.com/d | xargs open

Retrieve the original uploaded patch with an HTTP GET request to /d/YOUR_SLUG. Use the slug from the shared review URL’s /view/YOUR_SLUG path:

curl -fS https://diffdump.com/d/YOUR_SLUG -o changes.diff

A successful request returns 200 with the raw patch. Missing, invalid, or expired shares return 404; storage failures return 500. Downloads use the share’s original 24-hour expiry and do not extend it.

You can also open the shared review link and select Download diff beside Copy link.

Include the canonical GitHub repository and the full base commit SHA to enable on-demand expansion of unchanged lines. Diffdump keeps the patch as the request body.

BASE_SHA=$(git rev-parse HEAD)
git -c core.quotepath=off diff --full-index --binary "$BASE_SHA" |
  curl -T- \
    -H "X-Diffdump-GitHub-Repo: org/repository" \
    -H "X-Diffdump-Base-Sha: $BASE_SHA" \
    https://diffdump.com/d

The viewer fetches a requested base file directly from GitHub only after an expansion click, then applies the patch in the browser. Public repositories work anonymously. Private repositories use a GitHub token saved in that viewer’s browser. core.quotepath=off keeps non-ASCII file paths literal in the patch so their context stays expandable.

Uploads create unlisted URLs, not authenticated shares. Anyone with the link can view or download its contents until it expires after 24 hours. Remove secrets before uploading a patch.