All-in-One Developer Toolkit

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

Explore Tools

Our Tools

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

Text & Writing Tools

Word Counter
Text Case Converter
Character Counter
Reverse Text Generator
Article Rewriter
Find & Replace Text
Sentence Counter
Paragraph Counter
Email Extractor
URL Extractor
Phone Number Extractor
Text Summarizer (Basic)
Word Frequency Analyzer
Lorem Ipsum Generator
Random Paragraph Generator
Spintax Generator
Add Prefix & Suffix
Text Highlighter

Text Cleanup Tools

Remove Extra Spaces
Text Diff Checker
Remove Line Breaks
Duplicate Line Remover
Shuffle Text
Sort Lines Alphabetically
Remove Duplicate Words

YouTube & Video 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

SEO & Meta Tools

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

Domain & Network Tools

Robot Txt Generator
.htaccess Redirect Generator
IP Location Finder
DNS Record Generator
Server Header Checker
Port Scanner
Whois Info Formatter
Ping Command Generator
.htaccess Security Generator
CORS Policy Generator
Service Worker Generator
Sitemap Splitter

Code & Development Tools

JSON Formatter & Validator
CSS & JS Minifier
Base64 Encoder / Decoder
HTML to Markdown Converter
Markdown to HTML Converter
HTML Formatter
URL Encoder / Decoder
HTML to JSX Converter
JSON Beautifier
HTML/CSS/JS Minifier
Regex Tester & Debugger
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
Regex Builder
HTML Escape / Unescape
HTML Entity Encoder & Decoder
Javascript Obfuscator (Basic)
JS Beautifier
Console Log Generator
CSS Prefixer
HTML5 Template Generator
CSS Text Animation Generator
CSS Flexbox Visualizer
CSS Grid Layout Maker
CSS Blur Generator
CSS Backdrop Filter Generator
CSS Animation Preset

Security & Encryption Tools

Strong Password Generator
JWT Decoder & Verifier
Hash Generator
Text Encrypt / Decrypt
ROT13 Encoder / Decoder
Morse Code Converter
Caesar Cipher Encryptor

Image Tools (Edit & Convert)

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

Data & File Conversion Tools

Number to Words Converter
JSON to CSV Converter
JSON to XML Converter
XML to JSON Converter
Color Code Converter
Text to Binary Converter
Binary to Text Converter
Text to ASCII Converter
ASCII to Text Converter
JSON Merger
Decimal to Binary Converter
Decimal to Hex Converter
Binary to Decimal Converter
Text to Binary Converter
Binary to Text Converter

Math & Finance Calculators Tools

Base Converter
BMI Calculator
Loan EMI Calculator
Discount Calculator
GST Calculator
Percentage Finder
Calorie Calculator
Tip Calculator

Unit & Measurement Converters Tools

Temperature Converter
Length Converter
Weight Converter
Time Unit Converter
Speed Converter
Data Storage Converter

Time & Date Tools

Age Calculator
Stopwatch
Countdown Timer Generator

Social Media Tools

QR Code Generator
UTM Link Builder

PDF Tools

Text to PDF Converter

Others / Miscellaneous Tools

URL Shortener
Link Preview Generator
UUID Generator
Random Number Generator
Coin Toss Simulator
Dice Roller
Notes & Todo App (Local Storage)
Grid Paper Generator
View All Tools

Latest from Our Blog

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

How Small CSS Cleanups Improve Long-Term Project Stability
How Small CSS Cleanups Improve Long-Term Project Stability

Anyone who has worked on a long-running frontend codebase knows that the stylesheet often becomes a...

Read More
Practical Ways Developers Reduce Front-End Friction Every Day
Practical Ways Developers Reduce Front-End Friction Every Da...

Some days as a front-end developer feel like a long chain of tiny decisions—none dramatic on their o...

Read More
Preparing Visual Assets Efficiently for Blogs, Portfolios, and Documentation
Preparing Visual Assets Efficiently for Blogs, Portfolios, a...

Anyone who works with visual content eventually discovers that preparing images takes more time than...

Read More
The Subtle but Essential Role of File Size Awareness in Front-End Debugging
The Subtle but Essential Role of File Size Awareness in Fron...

Every front-end developer has faced that peculiar moment when the UI behaves oddly, yet nothing in t...

Read More
Handling Lightweight Web Projects Without Complex Build Tools
Handling Lightweight Web Projects Without Complex Build Tool...

There’s a particular kind of relief when you open a project folder and see only a few files staring...

Read More
When Manual Minification Makes More Sense Than Automated Pipelines
When Manual Minification Makes More Sense Than Automated Pip...

There’s a comforting rhythm to modern development pipelines—install a package, set up a config, and...

Read More
View All Blogs

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.

View Questions
Android Development

Get practice questions for Android Development and improve your interview skills.

View Questions
API Development

Get practice questions for API Development and improve your interview skills.

View Questions
Artificial Intelligence

Get practice questions for Artificial Intelligence and improve your interview skills.

View Questions
AWS (Amazon Web Services)

Get practice questions for AWS (Amazon Web Services) and improve your interview skills.

View Questions
Azure

Get practice questions for Azure and improve your interview skills.

View Questions
Bootstrap

Get practice questions for Bootstrap and improve your interview skills.

View Questions
C#

Get practice questions for C# and improve your interview skills.

View Questions
C++

Get practice questions for C++ and improve your interview skills.

View Questions
CI/CD

Get practice questions for CI/CD and improve your interview skills.

View Questions
Cloud (id 16)

Get practice questions for Cloud (id 16) and improve your interview skills.

View Questions
Cloud Computing

Get practice questions for Cloud Computing and improve your interview skills.

View Questions
CSS

Get practice questions for CSS and improve your interview skills.

View Questions
Cybersecurity

Get practice questions for Cybersecurity and improve your interview skills.

View Questions
Data Science

Get practice questions for Data Science and improve your interview skills.

View Questions
Data Structures & Algorithms

Get practice questions for Data Structures & Algorithms and improve your interview skills.

View Questions
DevOps

Get practice questions for DevOps and improve your interview skills.

View Questions
Django

Get practice questions for Django and improve your interview skills.

View Questions
Docker

Get practice questions for Docker and improve your interview skills.

View Questions
Express.js

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

View Questions
Flask

Get practice questions for Flask and improve your interview skills.

View Questions
Flutter

Get practice questions for Flutter and improve your interview skills.

View Questions
Git & Version Control

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

View Questions
GitHub Actions

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

View Questions
Google Cloud Platform

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

View Questions
GraphQL

Get practice questions for GraphQL and improve your interview skills.

View Questions
HTML

Get practice questions for HTML and improve your interview skills.

View Questions
iOS Development

Get practice questions for iOS Development and improve your interview skills.

View Questions
Java

Get practice questions for Java and improve your interview skills.

View Questions
JavaScript

Get practice questions for JavaScript and improve your interview skills.

View Questions
Kubernetes

Get practice questions for Kubernetes and improve your interview skills.

View Questions
Laravel

Get practice questions for Laravel and improve your interview skills.

View Questions
Machine Learning

Get practice questions for Machine Learning and improve your interview skills.

View Questions
MongoDB

Get practice questions for MongoDB and improve your interview skills.

View Questions
MySQL

Get practice questions for MySQL and improve your interview skills.

View Questions
Next.js

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

View Questions
Node.js

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

View Questions
PHP

Get practice questions for PHP and improve your interview skills.

View Questions
PostgreSQL

Get practice questions for PostgreSQL and improve your interview skills.

View Questions
Python

Get practice questions for Python and improve your interview skills.

View Questions
QA Automation

Get practice questions for QA Automation and improve your interview skills.

View Questions
React Native

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

View Questions
React.js

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

View Questions
Redis

Get practice questions for Redis and improve your interview skills.

View Questions
RESTful API

Get practice questions for RESTful API and improve your interview skills.

View Questions
SEO & Web Optimization

Get practice questions for SEO & Web Optimization and improve your interview skills.

View Questions
Software Testing

Get practice questions for Software Testing and improve your interview skills.

View Questions
System Design

Get practice questions for System Design and improve your interview skills.

View Questions
Vue.js

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

View Questions
Web Security

Get practice questions for Web Security and improve your interview skills.

View Questions
WordPress

Get practice questions for WordPress and improve your interview skills.

View Questions
Explore All

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.