Simple &amp; Easy Programming Learning

2 🔧 🔥 HOT

JSON Formatter

Format, validate & explore JSON — 100% private

654K users

3 🔍

Regex Tester

Live match highlighting, groups & replace mode

412K users

4 🔐

Base64 Encoder

Encode & decode Base64 — supports file upload

345K users

5 📱 ⭐ ESSENTIAL

QR Generator

Generate QR codes for URL, WiFi, email, SMS & more

287K users

6 🎨 ⭐ ESSENTIAL

Color Picker

HEX, RGB, HSL, CMYK conversions & shade palettes

265K users

7 🌐

HTML Formatter

Beautify & validate HTML5 with syntax highlighting

198K users

8 🖌️

CSS Formatter

Beautify, minify & validate CSS instantly

187K users

9 ⚡

JS Formatter

Beautify JavaScript — K&R, Allman, Stroustrup styles

175K users

10 📝 ⭐ ESSENTIAL

Markdown Editor

Write Markdown with live preview & toolbar

143K users

11 📧 ✨ NEW

Email Verifier

Validate email format, MX records & detect disposable

128K users

12 🌍

DNS Lookup

Query A, MX, NS, TXT, CNAME & all DNS record types

110K users

13 🔎

WHOIS Lookup

Domain registration, expiry & ownership information

98K users

14 🛡️ ✨ NEW

Port Scanner

Scan open TCP ports on any host or server

87K users

15 🗄️

SQL Formatter

Format & beautify SQL — MySQL, PostgreSQL & T-SQL

76K users

Zaheer Ahmad • Apr 12 • 6 min read min

Latest Tutorials

Fresh tutorials published regularly — all free for Pakistani students

Backstage Tutorial Developer Portal by Spotify 2026

Build an internal developer portal with Backstage — software catalog, templates, plugins, and TechDocs.

Visual Regression Testing Percy & Chromatic Tutorial

Catch UI bugs automatically — screenshot comparison with Percy, Chromatic, and Playwright visual testing.

Contract Testing with Pact Microservices Testing Guide

Prevent integration failures — consumer-driven contracts with Pact, provider verification, and CI integration.

k6 Load Testing Tutorial Performance Testing for APIs

Stress-test APIs with k6 — virtual users, scenarios, thresholds, checks, and Grafana integration.

Vitest Tutorial Fast Unit Testing for Vite Projects 2026

Test Vite projects with Vitest — zero-config, ESM support, snapshot testing, mocking, and code coverage.

Cypress Component Testing Unit Test React Vue Components

Test framework components in isolation with Cypress — mount, intercept, assertions, and visual testing.

Playwright Tutorial End to End Testing with Auto Wait 2026

Test web apps with Playwright — auto-wait, selectors, assertions, fixtures, trace viewer, and CI integration.

Zaheer Ahmad • Apr 12 • 4 min read min

SQL JSON Functions Query JSON Data in PostgreSQL & MySQL

Work with JSON in SQL databases — jsonb operators, JSON_EXTRACT, indexing JSON, and when to use JSON columns.

SQL Pivot Tables & Crosstab Queries Tutorial

Transform rows into columns with SQL — CASE WHEN pivot, PostgreSQL crosstab(), MySQL pivot techniques.

SQL Stored Procedures & Functions MySQL & PostgreSQL

Encapsulate business logic in the database — stored procedures, user-defined functions, triggers, and cursors.

SQL Query Optimization EXPLAIN Indexes & Execution Plans

Speed up slow queries — EXPLAIN ANALYZE, index strategies, covering indexes, query rewrites, and statistics.

SQL Common Table Expressions CTEs Recursive & Non Recursive

Simplify complex queries with CTEs — WITH clause, recursive CTEs for hierarchies, and materialized CTEs.

SQL Window Functions ROW NUMBER RANK LEAD & LAG

Master SQL window functions — ROW_NUMBER, RANK, DENSE_RANK, LEAD, LAG, SUM OVER, and running aggregates.

HTML Drag and Drop API Interactive UIs Tutorial

Build drag-and-drop interfaces — draggable, dropzone events, sortable lists, and file drop zones.

Zaheer Ahmad • Apr 11 • 6 min read min

HTML Canvas API Drawing Animation & Mini Games

Draw on the web with Canvas API — 2D context, shapes, images, animation loops, and building a mini-game.

HTML Dialog Element & Popover API Modern Modals 2026

Replace modal libraries with native HTML — <dialog>, showModal(), Popover API, and accessibility patterns.

HTML Forms Advanced Validation FormData & File Uploads

Build production forms — constraint validation, FormData API, file uploads, progress bars, and custom validity.

Zaheer Ahmad • Apr 11 • 6 min read min

HTML Semantic Elements Complete Guide for SEO & Accessibility

Write meaningful HTML — article, section, nav, aside, header, footer, main, figure — and why search engines reward it.

CSS Nesting has() & Modern Selectors Guide 2026

Write cleaner CSS with native nesting, :has() parent selector, :is(), :where(), and new color functions.

styled components & Emotion CSS in JS for React

Style React apps with CSS-in-JS — styled-components, Emotion, dynamic props, theming, and SSR support.

CSS Scroll Driven Animations New Browser API Guide

Create scroll-linked effects with native CSS — animation-timeline, view(), scroll(), and intersection triggers.

CSS Subgrid & Advanced Grid Techniques 2026

Go deeper with CSS Grid — subgrid, named grid areas, auto-fit/auto-fill, masonry layout, and complex layouts.

CSS Custom Properties Variables Dynamic Theming Guide

Use CSS custom properties for theming — :root variables, JavaScript integration, dark mode, and scoped theming.

CSS Animations & Transitions Complete Guide with Examples

Master CSS animations — @keyframes, transition timing functions, animation events, performance, and GPU acceleration.

CSS Container Queries Responsive Components Guide 2026

Build truly responsive components with CSS Container Queries — @container, container-type, size queries, and style queries.