Convert a Windows file path to a Unix path

Use forward slashes and drop a drive letter or leading ./.

JavaScript Version 1.0.0 · MIT · .md

convert-a-windows-file-path-to-unix-path.js
function toUnixPath(path) { return path.replace(/[\\/]+/g, '/').replace(/^([a-zA-Z]+:|\.\/)/, ''); }

Input & expected output

Input

"C:\\Users\\ana\\report.pdf"

Expected output

"/Users/ana/report.pdf"

The edge case

Input

".\\docs\\readme.md"

Expected output

"docs/readme.md"

Know the limits

  • The drive letter is discarded, not mapped to a mount point.

The function above is the implementation used by the lab. The lab validates JSON types and caps size before execution; include equivalent validation when accepting untrusted input in your application.

Source & maintenance

Based on Convert a Windows file path to Unix path from the original 1loc collection by Nguyen Huu Phuoc. Copyright (c) 2020 phuoc-ng. MIT licensed.

Curated implementation; explicit input contract, edge case and limits. Original MDX retained as inert source evidence.

Maintained by Oveyon. Source commit: 14b481cf60df. Read the license.

Local fixture scope · Node.js 22.23.2 · reviewed October 28, 2026. No external service is required.

Keep exploring

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