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MAP CSS
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Convert MAP to CSS

Can you convert MAP to CSS?
Verified by Adam B.· reviewed by FE Editorial ·updated Sep 11, 2026
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Is it possible to convert MAP to CSS?
No - not a direct conversion.

The .css file you want is in the same directory as the .map file with the same base name. If you need the original Sass or Less source, check the .map file's sources field or open DevTools.

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Also to CSS: ASE

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert MAP to CSS?

A CSS source map is a JSON file produced alongside compiled CSS by tools like Sass or webpack. It records how positions in the compiled stylesheet relate to the original source - it has no selectors, properties, or values, so there is nothing to convert to .CSS.

How to convert MAP to CSS

VS Code FREE

Open the .map file in VS Code and inspect the sources field to find the original file paths, or extract text from sourcesContent if it is present.

About these formats

.MAP Source Map (JavaScript / CSS)

A .map file is most often a JavaScript or CSS source map - a JSON file that lets browser DevTools show the original, readable source behind minified or compiled code. You do not open it by…

Open .MAP details →
.CSS Cascading Style Sheet

A CSS file is a Cascading Style Sheet - a plain-text file that controls colors, fonts, spacing, and layout on a web page. Open it in any text or code editor such as VS Code or Notepad++.…

Open .CSS details →

Quality & what to watch

  • The compiled .css file is in the same directory with the same base name - look for styles.css next to styles.css.map.
  • If sourcesContent is present in the map, the original Sass or Less text is embedded directly in the JSON and can be copied out.
  • Deleting the .map file has no effect on how the CSS renders for end users; it only removes the DevTools source mapping.

Frequently asked questions

Why does the `.map` file have the same name as my CSS file?
Build tools name the source map after its CSS counterpart by convention; the CSS file ends with a comment pointing to the .map.
Is it safe to delete `.map` files on a production server?
Yes - removing them has no effect on rendering and prevents your original Sass or Less source from being exposed in browser DevTools.
How do I find the original Sass source from a `.map` file?
Open the .map in any text editor and read the sources array; it lists the original file paths the CSS was compiled from.