DevKit

Tracking since May 23, 2026.

Changelog

• May 29, 2026
  description

  DevKit – Developer Toolbox
  
  DevKit is a lightweight Chrome extension that puts your most-used developer tools one click away – without leaving the current tab.
  Free tools included:
  → JSON Formatter & Viewer
  Paste raw JSON and get clean, syntax-highlighted, collapsible output. Error messages show exactly where your JSON breaks.
  → Base64 Encoder / Decoder
  Encode or decode strings instantly. Full UTF-8 support handles special characters correctly.
  → JWT Decoder
  Decode any JWT token into readable header and payload. See the expiry timestamp at a glance. No signature verification – and no need to paste tokens into third-party websites.
  → Timestamp Converter
  Convert Unix timestamps to human-readable dates and back. Supports local time, UTC, and ISO 8601 format.
  → UUID Generator
  Generate a cryptographically secure UUID (v4) with one click, using the native browser crypto API.
  → Regex Tester
  Test your regular expressions against any input string in real time. Matches are highlighted. Supports flags: global, case-insensitive, multiline.
  → Color Picker
  Pick a color and copy it as HEX, RGB, or HSL. Useful for quick CSS work without opening a full design tool.
  
  DevKit Pro (one-time $4.99 via Gumroad):
  Upgrade unlocks:
  
  Snippet Library – save and reuse your most common patterns, strings, and UUIDs, synced across Chrome profiles
  API Tester – send GET/POST requests with custom headers directly from the popup
  Diff Viewer – compare two JSON or text blocks line by line
  UUID Bulk Generator – generate up to 1,000 UUIDs at once, copy all or export as .txt
  Export Function – save any tool output as .json or .txt
  Keyboard Shortcuts – reach any tool without clicking
  
  
  Privacy first:
  All processing happens locally in your browser. No data is sent to any server. No account required. No tracking.
  DevKit is built for developers who value speed, privacy, and a clean interface.

  DevKit – Developer Toolbox
  
  DevKit is a lightweight Chrome extension that puts your most-used developer tools one click away – without leaving the current tab.
  Free tools included:
  → JSON Formatter & Viewer
  Paste raw JSON and get clean, syntax-highlighted, collapsible output. Error messages show exactly where your JSON breaks.
  → Base64 Encoder / Decoder
  Encode or decode strings instantly. Full UTF-8 support handles special characters correctly.
  → JWT Decoder
  Decode any JWT token into readable header and payload. See the expiry timestamp at a glance. No signature verification – and no need to paste tokens into third-party websites.
  → Timestamp Converter
  Convert Unix timestamps to human-readable dates and back. Supports local time, UTC, and ISO 8601 format.
  → UUID Generator
  Generate a cryptographically secure UUID (v4) with one click, using the native browser crypto API.
  → Regex Tester
  Test your regular expressions against any input string in real time. Matches are highlighted. Supports flags: global, case-insensitive, multiline.
  → Color Picker
  Pick a color and copy it as HEX, RGB, or HSL. Useful for quick CSS work without opening a full design tool.
  
  DevKit Pro (one-time $4.99):
  Upgrade unlocks:
  
  Snippet Library – save and reuse your most common patterns, strings, and UUIDs, synced across Chrome profiles
  API Tester – send GET/POST requests with custom headers directly from the popup
  Diff Viewer – compare two JSON or text blocks line by line
  UUID Bulk Generator – generate up to 1,000 UUIDs at once, copy all or export as .txt
  Export Function – save any tool output as .json or .txt
  Keyboard Shortcuts – reach any tool without clicking
  
  
  Privacy first:
  All processing happens locally in your browser. No data is sent to any server. No account required. No tracking.
  DevKit is built for developers who value speed, privacy, and a clean interface.

• May 29, 2026
  host_permissions

  https://api.gumroad.com/*, <all_urls>

  https://api.lemonsqueezy.com/*, <all_urls>

• May 29, 2026
  permissions

  clipboardWrite, storage

  clipboardWrite, storage, sidePanel

Permissions & access

Permissions

clipboardWritestoragesidePanel

Host access

https://api.lemonsqueezy.com/*, <all_urls>

Screenshots