VS Code Extensions
CodeKit

CodeKit

by zhanwangfeng

A toolkit of handy tools inside VS Code.

Downloads

9

Rating

— (0)

Version

0.0.13

Last updated

Aug 09, 2026

VS Marketplace Installs

English | 中文

A VSCode extension toolbox: collect common dev utilities into the sidebar, always within reach.

Quick Start

  1. Click the CodeKit icon in the Activity Bar to open the Tools list
  2. Click any tool (e.g. JSON Parser) to open a WebView tab in the editor area
  3. Select text in the editor, right-click to open the CodeKit menu, and run encode/decode/format operations in place

Built-in Tools

Tool Description
Hello World Animated demo tool with language switcher and context menu toggle
JSON Parser Real-time JSON parsing, dual-window toggle, editable tree, line numbers, Prism syntax highlighting
Unix Time Unix timestamp ↔ human-readable date (auto-detect seconds/milliseconds, global timezones)
Base64 Base64 encode/decode (UTF-8 safe, dual-pane editing)
Unicode Text ↔ \uXXXX escape conversion
UUID Batch generate RFC 4122 v4 UUIDs (upper/lower case, per-line copy)
MD5 Compute MD5 hash of input text
URL Encode URL component encode/decode
Variable Name camelCase / snake_case / kebab-case / PascalCase / CONSTANT_CASE conversion
SHA Hash Compute SHA-1 / SHA-256 / SHA-512 hashes
JWT Decoder Decode JWT header and payload (base64url, UTF-8 safe)
Color Converter Convert between HEX, RGB and HSL with live preview
Regex Tester Test regular expressions with match count and highlighting
HTML Encode/Decode Encode/decode HTML entities (& < > " '), dual-pane editing
Text Counter Count characters, UTF-8 bytes, words, lines and non-whitespace chars

Editor Context Menu

Right-click in the editor to run operations on selected text, replacing it in place:

Category Always Available Requires Selection
Json Open JSON Parser JSON Expand / JSON Collapse
Base64 Open Base64 Base64 Encode / Base64 Decode
URL Open URL Encoder URL Encode / URL Decode
Unicode Open Unicode Unicode Escape / Unicode Unescape
Unix Time Open Unix Time / Insert Current Time —
MD5 Open MD5 MD5 Hash
UUID Open UUID / Insert UUID —
Variable Name Open Variable Name camelCase / snake_case / kebab-case / PascalCase / CONSTANT_CASE
SHA Open SHA Hash SHA-256 Hash
JWT Open JWT Decoder —
Color Open Color Converter —
Regex Open Regex Tester —
HTML Encode Open HTML Encode/Decode HTML Encode / HTML Decode
Text Counter Open Text Counter —
  • Open xxx: Opens WebView and fills the input pane with selected text
  • In-place replace: Takes selected text → transforms → replaces selection; shows error on failure
  • Insert Current Time / Insert UUID: Replaces selection if any, otherwise inserts at cursor
  • Disabled state: Commands requiring selection appear grayed out with "(requires selection)" suffix when no text is selected
  • Toggle: Checkbox in Hello World WebView (top-left), enabled by default, persisted via VS Code configuration

Features

  • Activity Bar entry: Dedicated CodeKit icon for one-click access to the tool panel
  • WebView panels: Tools open as tabs in the editor area with animations and interactions
  • Panel reuse: Clicking a tool reuses an open panel; right-click "Open New Window" forces a new instance
  • i18n: English / Simplified Chinese, switchable in Hello World, all open panels update in real time
  • Editor context menu: In-place text transformation on selected text, toggleable from Hello World
  • Lightweight: Native HTML/CSS/JS, only inlines Prism.js (~8KB) for JSON syntax highlighting

Usage

  1. Click the CodeKit icon in the Activity Bar
  2. Click a tool in the Tools list to open it as a WebView tab
  3. Use the tool's input/output panes — all transformations update in real time
  4. Click the same tool again to jump to the existing panel; right-click → "Open New Window" to force a new instance

Editor Context Menu

  1. Select text in the editor
  2. Right-click → CodeKit → choose a category (Json / Base64 / URL / Unicode / Unix Time / MD5 / UUID / Variable Name / SHA / JWT / Color / Regex / HTML Encode / Text Counter)
  3. Pick an action:
    • Open xxx — Opens the tool's WebView and fills the input pane with selected text
    • Encode/Decode/Format — Replaces the selected text with the transformed result in place
    • Insert Current Time / Insert UUID — Replaces selection if any, otherwise inserts at cursor

Language Switching

  • Open Hello World, click English or 简体中文 in the top-right corner
  • All open WebView panels update their text in real time without reloading

Context Menu Toggle

  • Open Hello World, use the Context Menu checkbox in the top-left corner
  • Uncheck to hide the CodeKit entry from the editor right-click menu
  • Setting persists across sessions via VS Code configuration

Install

Install from the VS Code Marketplace.

Or search "CodeKit" in the VS Code Extensions panel (Ctrl+Shift+X).

Versions

  • 0.0.1: Activity Bar icon + Tree View tool list + Hello World animation
  • 0.0.2: JSON Parser (real-time parsing, editable tree, expand/collapse/sample buttons, word wrap)
  • 0.0.3: JSON editor overhaul (overlapping dual-window toggle, shared toolbar, line numbers, error indicator)
  • 0.0.4: JSON syntax highlighting (Prism.js text pane + tree type coloring)
  • 0.0.5: i18n support (English / Simplified Chinese, switch in Hello World)
  • 0.0.6: 7 converter tools + Converter framework + panel reuse + real-time language switching
  • 0.0.7: Editor context menu (9 categories, 24 commands, in-place text replacement) + HelloWorld toggle
  • 0.0.8: Extension icon
  • 0.0.9: SHA Hash / JWT Decoder / Color Converter / Regex Tester tools + context menu entries
  • 0.0.10: HTML Encode/Decode + Text Counter tools + context menu entries

License

MIT

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