Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of DevSpace - Developer Toolkit

DevSpace - Developer Toolkit by Farhan

The all-in-one developer toolkit. Code snippets, advanced color picker, grid overlay system, and responsive device testing in one popup.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
DevSpace is a feature-packed extension designed exclusively for web developers and designers. It combines four essential tools into one sleek, dark-themed popup — eliminating the need to install multiple separate extensions.

🔥 FEATURES
• Code Snippet Manager: Save, search, favorite, and copy snippets instantly (JavaScript, Python, HTML, CSS, SQL, etc).
• Advanced Color Picker: Uses the native EyeDropper API to pick any pixel color from your screen. Auto-saves up to 20 colors in history and includes 8 preset palettes.
• Grid Overlay System: Inject customized layout grids (columns or lines) onto any webpage with configured margins, gutters, max-width, colors, and opacity.
• Responsive Device Checker: Test any website against 18+ real device presets (iPhone 14 Pro Max, iPads, MacBooks, 4K monitors) with portrait/landscape toggles.

100% Free, Open Source, and built dynamically with React & Tailwind CSS.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support site
  • Support Email
Version
1.1.1
Size
36.77 KB
Last updated
2 days ago (Mar 30, 2026)
Related Categories
  • Web Development
License
MIT License
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.