---
title: "Introducing the $extensions Checker"
url: https://daily.dev/posts/introducing-the-extensions-checker-r8qeb0szd
source_url: https://www.alwaystwisted.com/articles/introducing-the-extensions-checker.html
type: article
source: "Always Twisted"
published: 2026-01-30T17:03:17.078Z
updated: 2026-01-30T17:03:35.335Z
tags: ["figma", "design-systems"]
reading_time: 3
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Introducing the $extensions Checker

**[Always Twisted](https://daily.dev/sources/alwaystwisted)** · 3 min read · 0 upvotes · 0 comments

## Summary

The $extensions Checker is a browser-based tool that parses W3C design tokens files to extract, visualize, and manage $extensions metadata. It helps developers audit what extensions are being used, identify duplicates, clean up bloated token files, and migrate between metadata systems. The tool works entirely locally without sending data anywhere, allowing users to paste their JSON, review all extensions grouped logically, delete unwanted ones individually or in bulk, and export cleaned-up tokens.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.alwaystwisted.com/articles/introducing-the-extensions-checker.html>

## Similar posts on daily.dev

- [Understanding $extensions in the Design Tokens Specification](https://daily.dev/posts/understanding-extensions-in-the-design-tokens-specification-umz22xf1r) · Always Twisted · 0 upvotes · 0 comments

---

Tags: [#figma](https://daily.dev/tags/figma), [#design-systems](https://daily.dev/tags/design-systems)

[View this post on daily.dev](https://daily.dev/posts/introducing-the-extensions-checker-r8qeb0szd)