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Developer's Toolkit
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A community-driven collection of powerful web development tools crafted by the open-source community. Built for developers, by developers. 🚀

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DevToolkit is proudly participating in Hacktoberfest 2025! We welcome contributions from developers of all skill levels.

38 Active Tools
25+ Contributors
147 GitHub Stars
heysaiyad/dev-toolkit Public
A collection of essential developer tools for Hacktoberfest 2025
1.2k
235
JavaScript

Available Tools

Community-built utilities to boost your development workflow

15 tools found 68 tools found 17 tools found

GitHub Profile Card

Generate a stylish, shareable GitHub profile card with avatar, bio, and stats.

API GitHub

Text Sentiment Analyzer

Analyze the emotional tone of any text. Get instant sentiment classification as Positive, Negative, or Neutral with detailed word-level analysis.

Text Analysis AI-Powered

Simple API Fetch Tester

Send API requests and view responses directly from your browser.

Category Feature

SVG_Visualizer Editor

Brief description of functionality.

Category Feature

Form Builder

Create custom forms with an intuitive drag-and-drop interface. Build forms visually and get clean HTML code instantly.

Form Builder HTML

HMAC Hash Generator

Create a Hash-based Message Authentication Code using SHA-256. Enter your message and secret key to generate the HMAC securely in your browser.

HMAC Hash SHA-256

AST Explorer

Explore the Abstract Syntax Tree (AST) of your JavaScript code.

AST JavaScript Code

SVG Shape Generator

Generate SVG code for basic shapes like circles, rectangles, and ellipses. Customize attributes like color, size, and position.

SVG Shape Generator

Image Color Palette Extractor

Upload any image and instantly extract dominant colors with HEX, RGB, and HSL values. Perfect for designers and developers.

Design Colors

Discount Calculator

Quickly find your final price and savings after applying discounts.

Utility Finance

Word Counter

Advanced text analysis tool with real-time word, character, and paragraph counting. Perfect for writers, bloggers, and content creators who need precise text metrics.

Text Analysis Featured

Word Frequency Analyzer

Analyze pasted text to find the most frequent words. Includes stopword filtering and CSV export.

Text Analysis

Text to ASCII Converter

Displays ASCII decimal values for each character.

Text Converter ASCII

Line Sorter & Unique

Sort text lines alphabetically and remove duplicates. Perfect for cleaning up lists, organizing data, and removing redundant lines from text files.

Text Sort Filter

Advanced Text Analyzer

Comprehensive text analysis with detailed statistics including word count, sentence count, paragraph count, reading time, and average metrics for in-depth content evaluation.

Text Analytics Statistics

Lorem Ipsum Generator

Generate customizable placeholder text by words or paragraphs for your design and development projects. Perfect for mockups and prototyping.

Text Generator

Markdown Previewer

Write and preview Markdown in real-time with split-view editor. Export to HTML, MD, or plain text.

Markdown Preview Editor

Commit Message Formatter

Create well-structured commit messages following the Conventional Commits specification. Includes type selection, scope, and emoji support.

Git Commits Developer

Git Branch Visualizer

Interactive visualization of Git branch history with support for merges and complex flows. Perfect for understanding repository structure.

Git Visualization Developer

JSON Formatter

Format, validate, and beautify JSON data with an interactive tree view and error detection.

JSON Format

Unit Converter

Extract links and images from any website using our powerful web scraper. Input a URL and get organized results with detailed statistics and export options.

Units Conversion Utility

Aspect Ratio Calculator

Calculate dimensions based on aspect ratios. Perfect for responsive design, video dimensions, and screen specifications.

Calculator Design Utility

Timer & Stopwatch

Countdown timer and stopwatch with lap tracking, audio alerts, and keyboard shortcuts.

Timer Stopwatch Productivity

Pomodoro Timer

25-minute work sessions and 5-minute breaks with Start, Pause, Reset controls and an audible alert to boost your focus.

Productivity Timer

Hotkeys Tester

Detect and display complex keyboard shortcuts (e.g., Ctrl+Shift+K). Useful for testing which shortcuts are available in the browser or OS.

Keyboard Hotkeys

Timezone Converter

Convert dates and times between different timezones with ease. See UTC offsets, daylight savings adjustments, and compare times instantly.

Timezone Date Converter

Date Difference Calculator

Quickly calculate the number of days, weeks, or months between two dates. Perfect for project planning, deadlines, and scheduling.

Date Time Calculator

Color Picker

Generate color palettes, convert between formats, and find perfect color combinations.

Color Design

Random Color Generator

Generates a random HEX or RGB color on button click. Shows the color code and a preview box.

Utility Color

Random Number generator

Generates a random number within a user-defined min/max range

Utility Awesome

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 strings. Support for text and file conversion.

Base64 Encode Decode

Image to Base64 Converter

Convert images to Base64 encoded strings. Perfect for embedding images directly in HTML, CSS, or JSON files.

Image Base64 Converter

Image Compressor

Upload a JPG/PNG, adjust quality and optionally resize, then compress in-browser and download.

Image Compression Utility

WebP Image Converter

Convert images to WebP format for better web performance. Upload JPG, PNG, GIF, and other formats to get optimized WebP files.

WebP Image Converter

Image Metadata (EXIF) Remover

Strip all EXIF metadata from your images to protect privacy. Upload an image and download a clean version without any embedded metadata.

Image Privacy EXIF

URL Encoder/Decoder

Encode or decode URLs to ensure proper formatting. Convert special characters and spaces for safe URL transmission.

URL Encode Decode

URL Query Parameter Editor

Parse, modify, and rebuild URLs with their query parameters. Add, edit, or remove parameters and generate new URLs with ease.

URL Parameters Query Edit

Password Generator

Generate secure passwords with customizable length and character sets.

Security Password

Unix Timestamp Converter

A simple tool to convert human-readable dates into Unix timestamps and convert Unix timestamps back into readable date/time.

Time Date Unix

QR Code Generator

Create QR codes for URLs, text, WiFi, and more with customizable styling.

QR Code Generator

Cron Expression Translator

Translate a 5-field cron expression into a human-readable description (e.g., */5 * * * * → "Every 5 minutes").

Cron Scheduler Utility

Geolocation & Maps

Find your current location using the browser's Geolocation API and display it on an interactive map with CartoDB tiles.

Location Maps Leaflet

Hex to RGB Converter

Convert the hexadecimal to RGB color code in a single click.

Hex to RGB Converter

UUID Generator

Generate Universally Unique Identifiers (UUIDs) instantly for database keys, session IDs, and unique identifiers.

UUID Generator Security

Percentage Calculator

Easily calculate percentages with this intuitive calculator. Find out what is X% of Y in seconds.

Calculator Math Utility

Color Palette Generator

Generate harmonious color palettes based on a base color and a chosen harmony rule (monochromatic, analogous, complementary, etc.).

Color Palette Utility

Number Squarer/Cuber

Calculate the square and cube of any number instantly. Perfect for mathematical calculations and learning.

Calculator Math Utility

CSS Clamp() Generator

Generate responsive font sizes using the CSS clamp() function with min, max, and fluid values.

CSS Typography

Relative Date Formatter

Input a past or future date/time to see it in a human-readable relative format, like '5 minutes ago' or 'in 3 months'.

Date Time Utility

Kanban Board

Organize your tasks with a simple drag-and-drop Kanban board. Create, edit, and move tasks between columns with data persistence.

Productivity Task Management Utility

Censor / Word Masker

Replace listed words in text with asterisks, custom characters, or fixed labels.

Text Utility Filter

Web Speech API

Experience speech recognition and synthesis. Convert speech to text and text to speech using your browser's built-in capabilities.

Speech AI Utility

Code Diff Viewer

Compare code snippets side-by-side with GitHub-style diff highlighting. Upload files or paste code to see detailed differences.

Code Diff Comparison

String Reverser

Reverse any text instantly for coding exercises, data transformation, input testing, obfuscation, and playful text effects.

String Reverse

Text Trimmer

Remove leading/trailing whitespace and normalize spaces in your text. Perfect for data cleaning and text preprocessing.

Text Trim Clean

Code Beautifier

Paste messy HTML code and instantly get beautifully formatted code.

Code Beautify

Text Repeater

Repeat any text a specified number of times.

Text Utility

Even Odd Checker

A simple tool to check whether a number is even or odd. Perfect for quick mathematical verifications.

Math Utility

Palindrome Checker

Check if a word or phrase reads the same forwards and backwards.

Text Utility

Character Counter

Instantly count the number of characters in any text input.

Text Utility

Number Base Converter

A simple tool to convert numbers between Decimal, Binary, Octal, and Hexadecimal.

Binary Decimal Octal Hexadecimal

Favicon Preview Tool

Upload an image and preview how it looks as a favicon in a mock browser tab.

Favicon Preview Design

Number Base Converter

A simple tool to convert numbers between Decimal, Binary, Octal, and Hexadecimal.

Binary Decimal Octal Hexadecimal

EMI Calculator

Calculate monthly EMI, total payment and total interest by entering principal, annual rate and tenure.

Finance EMI Calculator

YAML ↔ JSON Converter

Easily convert YAML to JSON and JSON to YAML. Perfect for developers working with APIs or config files.

JSON YAML Utility

XML to JSON

A tool to convert your XML data into JSON into format. With feature to copy and download the JSON file.

Converter Utility

JSON → CSV Converter

Convert an array of JSON objects into CSV format automatically using the keys from the first object.

JSON CSV Utility

Video to GIF Converter

Convert video clips to high-quality GIFs. Upload a video, select the segment, and generate a GIF.

Video

File Zipper

Convert your files into a zip and download it.

Pdf Zip Utility

File Encryptor

Encrypt and decrypt files locally using AES-GCM with a password. Nothing is uploaded.

Security AES-GCM PBKDF2

Color Contrast Checker

A tool to check contrast between two colors and certify if they meet the WCAG AA and AAA standards

Converter Utility Checker

CSV Viewer & Editor

Paste CSV to view it as a formatted, editable table. Edit cells inline and export the updated CSV.

CSV Table Utility

CSS Specificity Calculator

Enter a CSS selector to calculate its specificity score in the format [IDs, Classes/Attributes, Elements].

CSS Specificity Utility

CSS Animation Showcase

Preview pre-made CSS animations like bounce, fade, slide, and copy the code instantly.

CSS Animation

Prime Finder

Find all prime numbers up to a large number without freezing your browser using Web Workers. Shows progress and allows download.

Prime Math Utility

CSS Grid Generator

Create interactive CSS Grid layouts by defining rows, columns, gaps, and item positions, with ready-to-use CSS output.

CSS Grid Utility

JSON Schema Validator

Validate a JSON object against a JSON schema and get detailed error messages or confirm validity.

JSON Schema Utility

Credit Card Validator

Validate credit card numbers using the Luhn algorithm. Check if a card number is valid without storing any data - completely secure and private.

Validation Security Algorithm

Internet Spped Check

A simple and fast internet speed testing tool built with HTML, CSS, and JavaScript to measure your connection's download, upload, and ping."

Tool Internet Speed Web

Word Scrambler

Scramble the letters of each word while keeping the first and last letters fixed.

Text Scramble

Text Extractor

Extract meaningful text from various document formats, including PDFs, Word files and images using OCR technology.

Text Extraction Utility

Image Performance Audit

Analyze any webpage's images for performance issues, missing alt tags, and optimization opportunities. Get detailed insights and recommendations.

Performance SEO Images

String Length Counter

A simple tool to count the number of characters in any text input.

Text Utility

Percentage Calculator

A simple percentage calculator to find percentage of a number.

Math Utility

Meme Generator

Generate memes with customizable text and images.

Image Utility

Text Diff Checker

Compare snippets side-by-side with diff highlighting.

Math Utility

Gantt Chart Generator

Create professional Gantt charts for project planning and scheduling. Add tasks, set durations, dependencies and export as image.

Project Planning Charts

CSS Gradient Generator

Create beautiful CSS gradients with an intuitive interface. Choose colors, direction, and get the CSS code instantly.

CSS Gradient Utility

Equation Solver

Solve linear ($ax + b = 0$) and quadratic ($ax^2 + bx + c = 0$) equations and analyze the nature of their roots.

Math Utility Solver

Add Your Tool

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Join Hacktoberfest 2025

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Meet the Creator

Md Saiyad Ali

Passionate full-stack developer and open-source enthusiast. Creating tools that make developers' lives easier, one commit at a time. Always excited to collaborate and build amazing things together! 🚀

Full Stack Developer
Open Source Advocate
Innovation Driven
const developer = "Saiyad Ali"
let passion = "Open Source"
function buildAwesome() {
return "Amazing Tools"
}