loper

Loper · Developers

Open .yml files on your Mac.

.yml .yaml

CI workflows, Docker Compose and Kubernetes manifests with colored keys and values and a nested outline.

Loper is a free, minimal editor for macOS that opens YAML instantly and colors every part of the file, so you find the value you need at a glance and can fix it right there. No IDE, no project to load, no gray wall of text.

Download Loper – freeAll formats
ci.yml opened in Loper: YAML with color-coded YAML
Show the file as text
name: CIon:  push:    branches: [main]jobs:  test:    runs-on: macos-latest    steps:      - uses: actions/checkout@v4      - run: npm ci && npm test        env:          NODE_ENV: test

How to open .yml files

  1. Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
  2. Double-click your .yml file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
  3. Want every .yml file to open in Loper? Choose Loper › Make Loper the Default Editor….

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