All-in-One Developer Toolkit

Free online tools, coding blogs, and interview prep — everything in one place.

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Our Tools

Browse tools by category — click a tile to open the tool.

Text Tools

JSON Formatter & Validator
Text to PDF Converter
Word Counter
Text Case Converter
Character Counter
Remove Extra Spaces
Reverse Text Generator
Text Diff Checker
Remove Line Breaks
Article Rewriter
Text Encrypt / Decrypt
Text to Binary Converter
Binary to Text Converter
Text to ASCII Converter
ASCII to Text Converter
Find & Replace Text
Duplicate Line Remover
Sentence Counter
Paragraph Counter
Keyword Density Checker
Readability Checker
Email Extractor
URL Extractor
Phone Number Extractor
Text Summarizer (Basic)
Word Frequency Analyzer
Lorem Ipsum Generator
Random Paragraph Generator
Spintax Generator
Add Prefix & Suffix
Shuffle Text
Sort Lines Alphabetically
Remove Duplicate Words
ROT13 Encoder / Decoder
Morse Code Converter
Caesar Cipher Encryptor
Text Highlighter

YouTube Tools

YouTube Thumbnail Downloader
YouTube Timestamp Link Generator
YouTube Tag Extractor
YouTube Hashtag Extractor
YouTube Channel ID Finder
YouTube Video ID Extractor
YouTube Embed Code Generator
YouTube Playlist Downloader (Info Only)
YouTube Title Extractor
YouTube Content Analyzer (Basic)
YouTube Transcript Downloader
YouTube Live Stream Checker
Alt Text Generator for Images

Seo Tools

Meta Tag Generator
Open Graph Generator
Twitter Card Generator
XML Sitemap Generator
Schema Markup Generator
Meta Preview
Canonical Tag Generator
UTM Link Builder
Readability Score Checker
Keyword Density Analyzer
Title Case Generator for SEO
Robots Checker
SEO Friendly URL Generator
Meta Title Length Checker
Compare Meta Tags
Page Speed Tips Generator (Basic UI)

Domain & IP Tools

IP Location Finder
DNS Record Generator
Server Header Checker
Port Scanner
Whois Info Formatter
Ping Command Generator

Website Management Tools

Robot Txt Generator
.htaccess Redirect Generator
.htaccess Security Generator
CORS Policy Generator
Service Worker Generator
Sitemap Splitter

Web Development Tools

CSS & JS Minifier
Base64 Encoder / Decoder
Strong Password Generator
HTML to Markdown Converter
Markdown to HTML Converter
JSON to CSV Converter
JSON to XML Converter
XML to JSON Converter
HTML Formatter
URL Encoder / Decoder
HTML to JSX Converter
JSON Beautifier
HTML/CSS/JS Minifier
Regex Tester & Debugger
JWT Decoder & Verifier
Regex Builder
HTML Escape / Unescape
HTML Entity Encoder & Decoder
Javascript Obfuscator (Basic)
JS Beautifier
Console Log Generator
JSON Merger
CSS Prefixer
HTML5 Template Generator

Image Editing Tools

Image Compressor (JPG/PNG)
Image to Text (OCR Converter)
Image Resizer (Canvas API)
Image to Base64 Converter
Image Color Picker
Blur Image
Convert Image to WebP

Online Calculators Tools

Age Calculator
BMI Calculator
Loan EMI Calculator
Discount Calculator
GST Calculator
Percentage Finder
Calorie Calculator
Tip Calculator

Unit Converter Tools

Number to Words Converter
Color Code Converter
Temperature Converter
Length Converter
Weight Converter
Time Unit Converter
Speed Converter
Data Storage Converter

Binary Converter Tools

Base Converter
Decimal to Binary Converter
Decimal to Hex Converter
Binary to Decimal Converter
Text to Binary Converter
Binary to Text Converter

Miscellaneous Tools

URL Shortener
Link Preview Generator
UUID Generator
Hash Generator
Random Number Generator
Coin Toss Simulator
Dice Roller
Stopwatch
Countdown Timer Generator
Notes & Todo App (Local Storage)
Grid Paper Generator

CSS Tools

QR Code Generator
CSS Gradient Generator
CSS Box Shadow Generator
CSS Border Radius Generator
CSS Text Shadow Generator
CSS Transform Generator
CSS Animation Generator
CSS Transition Generator
CSS Filter Generator
CSS Clip Path Generator
CSS Glassmorphism Generator
CSS Neumorphism Generator
CSS Text Animation Generator
CSS Flexbox Visualizer
CSS Grid Layout Maker
CSS Blur Generator
CSS Backdrop Filter Generator
CSS Animation Preset
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Latest from Our Blog

Read tutorials, coding tips, and tech guides to level up your skills

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Interview Questions & Answers

Practice coding and technical questions for Fresher, Intermediate, and Experienced levels

.NET Framework

Get practice questions for .NET Framework and improve your interview skills.

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Android Development

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API Development

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Artificial Intelligence

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AWS (Amazon Web Services)

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Azure

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Bootstrap

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C#

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C++

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CI/CD

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Cloud (id 16)

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Cloud Computing

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CSS

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Cybersecurity

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Data Science

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Data Structures & Algorithms

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DevOps

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Django

Get practice questions for Django and improve your interview skills.

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Docker

Get practice questions for Docker and improve your interview skills.

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Express.js

Get practice questions for Express.js and improve your interview skills.

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Flask

Get practice questions for Flask and improve your interview skills.

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Flutter

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Git & Version Control

Get practice questions for Git & Version Control and improve your interview skills.

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GitHub Actions

Get practice questions for GitHub Actions and improve your interview skills.

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Google Cloud Platform

Get practice questions for Google Cloud Platform and improve your interview skills.

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GraphQL

Get practice questions for GraphQL and improve your interview skills.

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HTML

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iOS Development

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Java

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JavaScript

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Kubernetes

Get practice questions for Kubernetes and improve your interview skills.

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Laravel

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Machine Learning

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MongoDB

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MySQL

Get practice questions for MySQL and improve your interview skills.

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Next.js

Get practice questions for Next.js and improve your interview skills.

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Node.js

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PHP

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PostgreSQL

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Python

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QA Automation

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React Native

Get practice questions for React Native and improve your interview skills.

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React.js

Get practice questions for React.js and improve your interview skills.

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Redis

Get practice questions for Redis and improve your interview skills.

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RESTful API

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SEO & Web Optimization

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Software Testing

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System Design

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Vue.js

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Web Security

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WordPress

Get practice questions for WordPress and improve your interview skills.

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Boost Your Productivity with KnowAdvance

KnowAdvance offers a complete suite of online tools, coding tutorials, blogs, and interview preparation material. Our platform helps developers, students, and professionals enhance their skills, save time, and succeed in technical interviews.

From JSON formatting, QR code generation, text to PDF conversion, image optimization, CSS/JS minification, to Base64 encoding — we provide all the essential developer utilities for free. Explore our blog to stay updated with tech trends, and practice interview questions to land your dream job in IT.