DevToolkit icon

DevToolkit

by Hitesh Agrawal Ā· Tools
Manifest V3 Free
View in Chrome Web Store Data as of 21 Oct 2026

Essential toolkit for developers. String transformations, number converters, calculator, and math operations - all in one place.

Users
14
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#177K
#148K among extensions
Version
2.0.0
updated 4 Nov 2025

Users

monthly, 12 months
0714Nov 2025May 2026Oct 2026
Latest, 21 Oct 2026: 14 usersMove the mouse over the chart for any month

Ratings count

monthly, 12 months
001Nov 2025May 2026Oct 2026
Latest, 21 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About DevToolkit

Transform your browser into a powerful development workspace with DevToolkit - a beautiful, fast, and privacy-focused toolkit that combines essential string transformations and number utilities. Everything you need for daily development work, right at your fingertips. ✨ KEY FEATURES šŸ”¤ STRING UTILITIES - 16 Powerful Transformations Case Transformations: • UPPERCASE - Convert all text to uppercase letters • lowercase - Convert all text to lowercase letters • Capitalize - Make the first letter of text uppercase • Title Case - Capitalize the first letter of each word • camelCase - Convert text to camelCase format for JavaScript variables • snake_case - Convert text to snake_case format for Python/database naming • kebab-case - Convert text to kebab-case format for URLs and CSS classes Text Manipulation: • Reverse - Reverse the order of characters in your text • Trim - Remove leading and trailing whitespace • Remove Spaces - Strip all spaces from text • Remove Duplicates - Remove duplicate lines from multi-line text Encoding & Formatting: • URL Encode - Encode text for safe URL usage • URL Decode - Decode URL-encoded text back to readable format • Base64 Encode - Encode text to Base64 format • Base64 Decode - Decode Base64 encoded text • Slugify - Convert text to URL-friendly slugs (hello-world-format) šŸ”¢ NUMBER UTILITIES - Complete Mathematical Toolkit 🧮 Full-Featured Calculator: • Basic Operations: Addition, Subtraction, Multiplication, Division • Decimal Support: Work with floating-point numbers • Percentage Calculations: Quick percentage operations • Memory Functions: Clear and backspace for easy corrections • Live Expression Display: See your calculation as you build it (e.g., "2 + 3") • Keyboard Support: Type directly on your keyboard - no mouse needed! Calculator Keyboard Shortcuts: • 0-9: Number input • +, -, *, /: Mathematical operations • Enter or =: Calculate result • Backspace: Delete last digit • Escape or C: Clear calculator • .: Decimal point • %: Percentage šŸ”„ Number Base Converters: Convert numbers between different number systems instantly: • Binary (Base 2) - Perfect for bit operations and computer science • Octal (Base 8) - Unix permissions and legacy systems • Decimal (Base 10) - Standard number system • Hexadecimal (Base 16) - Color codes, memory addresses, and more Smart Input Detection: • Automatic detection of input format (0b for binary, 0o for octal, 0x for hex) • One-click copy buttons for each conversion • Real-time conversion as you type šŸ“ Math Operations: • Square Root (√) - Calculate √x with precision • Square (x²) - Calculate x squared • Percentage Calculator - Find x% of y • Sum Calculator - Add comma-separated numbers (e.g., 1,2,3,4,5) • Instant results with copy functionality šŸ“Š REAL-TIME TEXT ANALYSIS Get instant insights about your text: • Character Count - Total characters including spaces • Word Count - Number of words in your text • Line Count - Number of lines • Unique Characters - Count of distinct characters • Number Count - How many digits are in the text • Space Count - Total spaces • Uppercase Letters - Count of capital letters • Lowercase Letters - Count of small letters • Special Characters - Punctuation and symbols Perfect for: • Meeting character limits (Twitter, SMS, meta descriptions) • Writing requirements (essays, articles, blog posts) • Code review and documentation • Data validation and quality checks šŸ“ˆ USAGE STATISTICS Track your productivity: • Daily Operations Counter - Resets at midnight • Total Operations Counter - Lifetime statistics • Beautiful animated number displays • No data sent anywhere - all stored locally on your device šŸŽØ BEAUTIFUL DESIGN • Modern gradient theme (Indigo → Violet → Fuchsia) • Smooth animations and transitions • Clean, intuitive tabbed interface • Responsive design that adapts to your workflow • Professional UI inspired by modern design principles šŸš€ USE CASES For Developers: • Convert variable naming conventions (camelCase ↔ snake_case ↔ kebab-case) • Encode/decode URLs and Base64 for API testing • Calculate percentages for CSS layouts and responsive design • Convert between number bases for low-level programming • Quick math operations without leaving your browser • Generate URL-friendly slugs for routes and endpoints For Content Creators: • Format text for different platforms • Count words and characters for content requirements • Create SEO-friendly URLs with slugify • Remove duplicate lines from lists • Text analysis for optimization For Students: • Math calculations and base conversions • Text transformations for assignments • Character counting for essay requirements • Quick reference for encoding formats For Everyone: • Basic calculator always at hand • Text formatting and cleanup • Copy/paste utilities • Number conversions for daily tasks šŸ”’ PRIVACY & SECURITY - YOUR DATA STAYS YOURS 100% Private & Secure: āœ… All processing happens locally in your browser āœ… Zero data collection - we don't track anything āœ… No external API calls or network requests āœ… No analytics, no tracking, no third-party services āœ… Open source - verify the code yourself āœ… Minimal permissions - only clipboardWrite and storage What We DON'T Do: āŒ No data collection āŒ No browsing history tracking āŒ No external server communication āŒ No user profiling āŒ No data selling āŒ No advertisements Local Storage: The only data stored is your usage statistics (operation counts), which: • Lives only on your device • Never transmitted anywhere • Can be cleared by uninstalling the extension • Used only to show you your productivity stats ⚔ PERFORMANCE • Lightning Fast: All operations execute instantly • Lightweight: Under 100KB total size • No Dependencies: Pure vanilla JavaScript • Offline Ready: Works without internet connection • Low Memory: Minimal resource usage • Battery Friendly: Efficient code that doesn't drain power šŸŽÆ WHY CHOOSE DEVTOOLKIT? All-in-One Solution: Instead of opening multiple websites or apps for d…

Growth

WindowUsersChangeRatingsRating
7 days+4+40.0%00.00
30 days+1+7.7%00.00
6 months+10+250.0%00.00

Version history

1 versions recorded
2.0.04 Nov 2025

Details

Category
Tools
First seen
4 Nov 2025
Size
104 KB
Languages
en
Pricing
Free
Privacy policy
github.com
Support
github.com
Extension ID
epmimfhkjockcbmjlgpmomcehfecfjlh

Permissions and risk

Low riskimpact 1, likelihood 2
Permissions
clipboardWritestorage

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