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Guides & Tutorials

In-depth how-to articles for every EazyTools tool — with real examples, code snippets, and tips.24 articles

PDF Tools5 min read

How to Remove a Password from a PDF — Step-by-Step Guide

Learn how to unlock a password-protected PDF file online for free. We cover different types of PDF passwords, when it is legal to remove them, and how to do it in seconds.

Tool:PDF Password Remover
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PDF Tools5 min read

How to Merge and Split PDF Files Online — Free Guide

Learn how to combine multiple PDF files into one, or split a PDF into separate pages. Covers use cases, step-by-step instructions, and tips for organising documents efficiently.

Tool:PDF Merge & Split
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Developer Tools7 min read

What is Base64 Encoding? Complete Guide with Examples

A practical guide to Base64 encoding — what it is, how it works, when to use it, and real-world examples in JavaScript, Python, and APIs. Includes a free online encoder tool.

Tool:Base64 Encoder / Decoder
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Developer Tools6 min read

JSON Formatting Guide — How to Read, Write, and Validate JSON

A complete guide to JSON — syntax rules, common errors, how to format and validate JSON online, and real-world examples for APIs, config files, and JavaScript development.

Tool:JSON Formatter & Validator
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Developer Tools8 min read

Understanding Cron Expressions — Complete Guide with Examples

Cron expressions explained from scratch. Learn the 5-field syntax, special characters, and real examples for scheduling daily, weekly, and monthly jobs in Linux, AWS, and GitHub Actions.

Tool:Cron Expression Builder
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Developer Tools4 min read

How to Compare Two Text Files or Code Snippets Online

Learn how to use a diff checker to spot differences between two versions of text, code, or configuration files. Covers line diff vs word diff, and practical use cases for developers.

Tool:Diff Checker
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Developer Tools6 min read

YAML vs JSON — Differences, Use Cases, and How to Convert

A practical comparison of YAML and JSON — syntax differences, when to use each, common pitfalls, and how to convert between them online for free.

Tool:YAML ↔ JSON Converter
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Developer Tools8 min read

Regular Expressions (Regex) Guide for Beginners — With Examples

Learn regular expressions from scratch. Covers basic syntax, character classes, quantifiers, groups, and real-world patterns for email validation, URL matching, and log parsing.

Tool:Regex Tester
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Developer Tools5 min read

How to Convert an Image to Base64 — Complete Guide

Learn how to convert images to Base64 strings for use in HTML, CSS, and APIs. Covers when to use Base64 images, size trade-offs, and how to embed them in code.

Tool:Image to Base64 Converter
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Developer Tools7 min read

HTTP Headers Explained — Security, Caching, and How to Check Them

A complete guide to HTTP response headers — what they do, which security headers every site needs, how to set cache headers, and how to inspect headers for any URL.

Tool:HTTP Header Checker
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Developer Tools6 min read

Cryptographic Hash Functions Explained — MD5, SHA-256, and More

Learn what cryptographic hash functions are, the difference between MD5, SHA-1, SHA-256, and SHA-512, when to use each, and how to generate hashes online for free.

Tool:Hash Generator
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Network & Security6 min read

Port Scanning Guide — Understanding Open Ports and Network Security

Learn what network ports are, which ports are commonly used by services, how port scanning works, and how to check open ports on your own servers for security auditing.

Tool:Port Scanner
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Network & Security5 min read

Whois Lookup Guide — How to Find Domain Owner and Registration Info

Learn how Whois works, what information you can find about any domain name or IP address, how WHOIS privacy protection works, and when to use Whois lookups.

Tool:Whois Lookup
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Network & Security5 min read

How to Find Your Public IP Address — And What It Reveals

Learn what your public IP address is, how it differs from your private IP, what geolocation data it exposes, and how to look up any IP address instantly.

Tool:Public IP & Geo Lookup
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Network & Security5 min read

How to Create Strong Passwords — Guide to Password Security

Learn what makes a password strong, why password managers matter, how random password generators work, and best practices for securing your accounts in 2026.

Tool:Password Generator
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Files & Media6 min read

How to Resize and Compress Images for the Web — Free Guide

Learn the best image sizes for websites, social media, and email. Covers JPG vs PNG vs WebP, compression tips, and how to reduce image file size without losing quality.

Tool:Image Resizer & Compressor
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Files & Media5 min read

How to Convert Excel to CSV (and CSV to Excel) — Free Guide

Learn the difference between Excel and CSV formats, when to use each, how to convert between them, and common issues like encoding and delimiter problems.

Tool:Excel ↔ CSV Converter
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Utilities5 min read

How to Generate QR Codes for Your Business — Free Guide

Everything about QR codes — what they are, how they work, best practices for print and digital use, and how to create QR codes for URLs, Wi-Fi, and contact cards for free.

Tool:QR Code Generator
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Utilities10 min read

Vedic Kundli Explained — How to Read Your Birth Chart

A complete beginner's guide to Vedic astrology and Kundli reading. Learn what the 12 houses mean, how to interpret planetary positions, understand Vimshottari Dasha, and generate your free online Kundli.

Tool:Kundli Generator
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Utilities5 min read

Unit Conversion Guide — Length, Weight, Temperature and More

A practical guide to unit conversion — metric vs imperial, common conversion formulas, Indian land area units, and how to convert temperature, speed, and digital storage units.

Tool:Unit Converter
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Network & Security6 min read

SSL Certificates Explained — What They Are and How to Check Them

Learn what SSL/TLS certificates are, why they matter for SEO and security, how to read certificate details, and how to check if your site SSL is valid and up to date.

Tool:SSL Certificate Checker
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Network & Security7 min read

Subnet Calculator Guide — Understanding CIDR and IP Subnetting

Learn IP subnetting from scratch — what CIDR notation means, how to calculate network ranges, subnet masks, and broadcast addresses with practical examples for network engineers.

Tool:Subnet Calculator
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Finance6 min read

How to Use a Compound Interest Calculator — With Real Examples

Learn how compound interest works, why it is the key to long-term wealth building, and how to calculate investment growth with real examples including SIP and lump sum scenarios.

Tool:Investment Planner
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Finance6 min read

EMI Calculator Guide — How to Calculate Loan EMI and Plan Repayment

Understand how EMI is calculated, what affects your monthly instalment, how to reduce total interest paid, and how to plan home loan, car loan, and personal loan repayments.

Tool:Loan Repayment Planner
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