Loper · Developers

Open .css files on your Mac.

.css .scss

Stylesheets with selectors, properties, colors and units colored separately.

Loper is a free, minimal editor for macOS that opens CSS and SCSS 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.

styles.css opened in Loper: CSS and SCSS with color-coded CSS
Show the file as text
:root {  --accent: #6cc7f2;  --ink: #e9e6df;} .hero {  display: grid;  gap: 24px;  padding: 8vh 6vw;  background: linear-gradient(180deg, #101014, #1c1c22);} .hero h1 {  font: 600 clamp(2rem, 6vw, 5rem) / 0.9 "Inter", sans-serif;  color: var(--accent);}

How to open .css files

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