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Guides & explainers

Practical articles on finance calculators, converters, security and online tools — with free MerQPrime utilities linked in every guide.

Business

How to Create a UPI QR Code Online — Free Step-by-Step Guide

Learn how to create your UPI QR code online for Google Pay, PhonePe and Paytm. Free UPI QR generator with download, print and business setup tips.

24 June 2026
Business

Static vs Dynamic UPI QR Codes — Which Should You Use?

Compare static and dynamic UPI QR codes for Indian businesses. Learn when to use a dynamic UPI QR code generator vs static shop standees.

24 June 2026
Business

UPI ID to QR Code Converter — Complete Guide for India

Convert UPI ID to QR code for instant scan-and-pay. Free UPI ID to QR converter for PhonePe, GPay, Paytm with step-by-step setup and security tips.

24 June 2026
SEO

Best Free Word Counter Tool — Count Words, Characters and SEO Lengths

Compare free word counters for writers and SEO, learn what to measure for meta descriptions and articles, and count text privately in your browser.

20 June 2026
Finance

FD Calculator Guide — Fixed Deposit Maturity in India

Learn how fixed deposit interest is calculated in India with quarterly compounding and use our free FD calculator for maturity amount and yield.

20 June 2026
Finance

GST Calculation Guide for India — Add, Remove & Split Tax

Learn how to add or remove GST in India across 5%, 12%, 18% and 28% slabs, with CGST, SGST and IGST explained.

20 June 2026
Finance

How to Create a GST Invoice in India

Step-by-step guide to GST tax invoices with CGST, SGST and IGST — plus a free GST invoice generator for Indian businesses.

20 June 2026
Developer

How JWT Tokens Work — Structure, Signing and Debugging

Understand JSON Web Token header, payload and signature, common claims, validation pitfalls and decode JWTs safely with MerQPrime's free JWT decoder.

20 June 2026
Guides

How to Calculate Age from Date of Birth

Calculate exact age in years, months and days for forms, eligibility checks and milestones — plus a free age calculator.

20 June 2026
Finance

How to Calculate EMI — Home, Car & Personal Loans

Learn how EMI is calculated in India, what affects your monthly payment, and use our free EMI calculator to plan home, car and personal loans.

20 June 2026
Guides

Image Compression Guide — Reduce File Size Without Losing Quality

Learn how image compression works, when to use JPEG vs PNG, and compress images free in your browser with MerQPrime.

20 June 2026
SEO

Meta Tags for SEO — Titles, Descriptions and Robots Directives

Learn which meta tags matter for SEO, how to write titles and descriptions that earn clicks and generate meta tags with MerQPrime's free tool.

20 June 2026
SEO

Open Graph Tags Explained — Social Previews That Convert

Master Open Graph meta tags for Facebook, LinkedIn and messaging apps — image sizes, required properties and generate OG markup with MerQPrime.

20 June 2026
Security

Password Security Guide — Create Strong Passwords

Best practices for strong passwords, why length beats complexity alone, and how to generate secure passwords with MerQPrime.

20 June 2026
Guides

Percentage Calculation Guide — Formulas & Examples

Master percentage math: find X% of Y, calculate increase, decrease and difference between values with formulas and examples.

20 June 2026
Finance

PPF Calculator Guide — Public Provident Fund Returns

Learn how PPF interest compounds annually, the 15-year lock-in and use our free PPF calculator to project tax-free maturity in India.

20 June 2026
Guides

QR Code Guide — Create & Use QR Codes Online

What QR codes are, how they work, best practices for links and payments, and how to generate QR codes free with MerQPrime.

20 June 2026
Finance

RD Calculator Guide — Recurring Deposit Maturity in India

Understand how recurring deposit maturity is calculated for monthly instalments and estimate returns with our free RD calculator for India.

20 June 2026
Developer

Regex Guide for Beginners — Patterns, Flags and Testing

Learn regular expression basics — literals, character classes, quantifiers and anchors — and test patterns live with MerQPrime's free regex tester.

20 June 2026
Developer

SQL Formatting Best Practices — Readable Queries for Teams

Learn SQL formatting conventions, keyword casing, indentation rules and format queries instantly with MerQPrime's free online SQL formatter.

20 June 2026
Guides

Unit Conversion Explained — Length, Weight, Temperature & More

Learn how unit conversion works across length, weight, temperature, area, volume and speed — with a free online unit converter.

20 June 2026
Business

UPI QR Code Guide — Accept Payments in India

How UPI QR codes work, what paam (UPI payment string) fields mean, and how to generate a UPI QR code for your business.

20 June 2026
Developer

URL Encoding Explained — Percent-Encoding, Query Strings and Pitfalls

Learn why URL encoding exists, how percent-encoding works for query strings and paths, and encode or decode URLs with MerQPrime's free tools.

20 June 2026
SEO

What Is Schema Markup? JSON-LD, Rich Results and SEO

Learn what schema markup is, how JSON-LD helps search engines understand your pages and generate valid structured data with MerQPrime's free tool.

20 June 2026
Developer

What Is SHA256 Hashing? Uses, Security and How to Generate Hashes

Learn how SHA256 works, where it is used in security and development, and generate SHA256 hashes instantly with MerQPrime's free online tool.

20 June 2026
Finance

What Is SIP Investment? A Beginner's Guide for India

Understand Systematic Investment Plans (SIP), how returns compound over time, and estimate future value with our free SIP calculator.

20 June 2026
Developer

XML vs JSON — When to Use Each Format in Modern Apps

Compare XML and JSON for APIs, config and data exchange — syntax, tooling, performance and format documents with MerQPrime's free online tools.

20 June 2026
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