Paste once, run once. A tiny macOS menu-bar app that flattens those multi-line shell snippets you copy from blogs, READMEs, and ChatGPT — so they actually paste and run.

brew install --cask steipete/tap/trimmy

…or grab the signed .zip from Releases. Sparkle keeps it up-to-date automatically.

You copy this:

kubectl get pods \
    -n kube-system \
    --selector='app=ingress' \
    -o json | jq '.items[].metadata.name'

Trimmy quietly rewrites your clipboard to this:

kubectl get pods -n kube-system --selector='app=ingress' -o json | jq '.items[].metadata.name'

You paste once, the shell runs once. No more dquote> prompts, no half-pasted commands, no “did you mean to run that as four separate commands?”

• Lives in your menu bar. No dock icon (LSUIElement). macOS 15 and later.
• Knows when it's a command. Pipes, redirects, backslash continuations, $ / # prompt gutters — all read as command cues. Markdown headings stay intact.
• Per-context aggressiveness. Set the eagerness separately for general apps and terminals (Terminal, iTerm, Ghostty, Warp, kitty, WezTerm, Hyper, Alacritty).
• Two hotkeys. Global Paste Trimmed and Paste Original — with a preview that shows the target app and strikes through what was removed.
• Reflows wrapped Markdown as a separate menu action. Preserves fenced code, headings, and intentional blank lines.
• Strips URL query params as a separate menu action. Keeps per-domain content identity (YouTube v/list/t, GitHub tab, Figma node-id, etc.); the keeplist is editable in Settings.
• Strips box-drawing gutters (│, ┃) so you can paste right out of fancy CLI tools.
• Stays on your Mac. No telemetry, no auth, no network calls except Sparkle's update check. MIT licensed.

Settable per-context. Low is conservative; High flattens almost anything that looks command-shaped (and is what Paste Trimmed always uses). The defaults are tuned to be useful but never destructive: a 10-line safety valve skips auto-flatten on big blobs.

Prompt gutters get cleaned automatically, so # brew install foo becomes brew install foo while a Markdown heading like # Release notes is left alone.

ls -la \
  | grep '^d' \
  > dirs.txt
# → ls -la | grep '^d' > dirs.txt

kubectl get pods \
  -n kube-system \
  | jq '.items[].metadata.name'
# → kubectl get pods -n kube-system | jq '.items[].metadata.name'

echo "hello"
print status
# → echo "hello" print status

There's a bundled CLI for scripts and pipelines:

pbpaste | swift run TrimmyCLI --trim - --force
swift run TrimmyCLI --trim ~/snippet.sh --aggressiveness high --json

Flags: --aggressiveness {low|normal|high}, --force/-f (forces High), --preserve-blank-lines / --no-preserve-blank-lines, --remove-box-drawing / --keep-box-drawing, --json. Exit codes: 0 ok · 1 no input/error · 2 no transformation · 3 JSON encode error.

Swift 6, macOS 15+:

swift build -c release
./Scripts/package_app.sh release   # → Trimmy.app

Then run Trimmy.app (or add it to Login Items via the menu).

swiftformat .
swiftlint lint --fix
swift test

• ~150 ms polling timer with an 80 ms grace delay so promised pasteboard data lands before Trimmy decides what to do.
• Clipboard writes carry a com.steipete.trimmy marker pasteboard type so Trimmy never reprocesses its own output.
• Sparkle handles auto-updates: auto-check, auto-download, then the menu shows “Update ready, restart now?”

• ✂️ Trimmy — this repo.
• 🪶 Alfred workflow — community Alfred integration.
• 🟦🟩 CodexBar — keep Codex token windows visible in the menu bar.
• 🧳 MCPorter — TypeScript toolkit + CLI for Model Context Protocol servers.
• 🧿 Oracle — multi-model prompt bundler/CLI.

MIT — built by Peter Steinberger in Vienna, with help from a small pair of scissors.