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 01 • 4 min read min

Latest Tutorials

Fresh tutorials published regularly — all free for Pakistani students

MLOps Tutorial ML Pipelines Versioning & Monitoring

Apply MLOps practices — ML pipelines with MLflow, model versioning, CI/CD for ML, and production monitoring.

Reinforcement Learning Q Learning & OpenAI Gym Guide

Learn reinforcement learning — Markov decision processes, Q-learning, policy gradient, and OpenAI Gym environments.

Zaheer Ahmad • Mar 31 • 14 min read min

Time Series Analysis with Python Forecasting & ARIMA

Analyze and forecast time series data — ARIMA, Prophet, trend decomposition, and building prediction models.

Zaheer Ahmad • Mar 31 • 14 min read min

Computer Vision with OpenCV Detection & Classification 2026

Build computer vision apps with OpenCV — image processing, face detection, object tracking, and classification.

Zaheer Ahmad • Mar 31 • 6 min read min

AI Ethics & Responsible AI Development Guide 2026

Understand AI ethics — bias, fairness, transparency, privacy, safety, and responsible development practices.

Vector Databases Tutorial Pinecone Chroma & Weaviate 2026

Store and query embeddings with vector databases — similarity search, indexing, and integration with LLM pipelines.

LangChain Tutorial Building LLM Applications in Python 2026

Build LLM-powered apps with LangChain — chains, agents, memory, tools, RAG, and document question answering.

Hugging Face Tutorial Pre trained Models & Transformers 2026

Use Hugging Face transformers — loading models, tokenizers, pipelines for NLP, text generation, and fine-tuning.

Node js Interview Questions Top 40 Q&A for 2026

Ace Node.js interviews — event loop, streams, clustering, Express, and common backend coding questions.

Behavioral Interview Questions for Developers STAR Guide

Prepare for behavioral interviews with the STAR method — teamwork, conflict, leadership, and failure scenarios.

DSA Interview Questions Arrays, Trees & Graphs Problems

Solve the most common DSA interview problems — arrays, strings, trees, graphs, and dynamic programming with solutions.

Zaheer Ahmad • Mar 31 • 4 min read min

React Interview Questions Top 40 Q&A for 2026

Nail React interviews — hooks, virtual DOM, state management, performance, and common React coding challenges.

SQL Interview Questions Top 40 Q&A with Solutions 2026

Ace SQL interviews with top 40 questions — joins, subqueries, window functions, indexes, and optimization problems.

Zaheer Ahmad • Mar 31 • 4 min read min

Java Interview Questions Top 50 Q&A for 2026

Prepare for Java interviews — OOP, collections, concurrency, Spring, and top Java coding questions answered.

JavaScript Interview Questions Top 50 Q&A for 2026

Master JavaScript interviews — closures, prototypes, event loop, promises, and top coding questions with solutions.

Zaheer Ahmad • Mar 31 • 4 min read min

Python Interview Questions Top 50 Q&A for 2026

Ace Python interviews with top 50 questions — covering data types, OOP, generators, decorators, and problem-solving.

Zaheer Ahmad • Mar 30 • 4 min read min

Linux Security Hardening SSH Firewall & Permissions

Harden a Linux server — SSH key auth, UFW firewall, fail2ban, file permissions, user management, and audit logs.

Input Validation & Sanitization Secure Coding Guide

Validate and sanitize user input — server-side validation, whitelist vs blacklist, SQL injection, XSS prevention.

Zaheer Ahmad • Mar 30 • 4 min read min

Content Security Policy (CSP) XSS Prevention Guide

Implement Content Security Policy headers — directives, nonces, report-only mode, and blocking XSS attacks.

CORS Explained Cross Origin Requests Headers & Fixes

Understand CORS completely — same-origin policy, preflight requests, headers, and fixing CORS errors in your API.

Zaheer Ahmad • Mar 30 • 6 min read min

HTTPS & SSL/TLS How Web Encryption Works Explained

Understand HTTPS and TLS — certificates, handshake, encryption, Let's Encrypt, and setting up HTTPS on Nginx.

ELK Stack Tutorial Elasticsearch Logstash & Kibana

Set up the ELK stack for log management — Elasticsearch indexing, Logstash pipelines, Kibana dashboards.

Prometheus & Grafana Tutorial Monitoring & Alerting Setup

Monitor applications with Prometheus and Grafana — metrics collection, PromQL queries, dashboards, and alert rules.

Ansible Tutorial Infrastructure Automation & Configuration

Automate server configuration with Ansible — inventory, playbooks, roles, modules, and deploying to multiple servers.