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In-depth tutorials, official recruitment portal specifications, income tax simulations, and technical documentation—verified against official government sources.

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📖 Complete Reference Library (25 Articles)

Browse through all our step-by-step technical guides, regulatory analyses, and workflow tutorials.

Exam Guidelines⏱️ 7 min

SBI PO & Junior Associate (Clerk) Document Upload Guidelines: Photo, Signature, Thumb & Declaration

Official State Bank of India (SBI) PO and Clerk document upload specifications. Photo size (20-50KB), signature (10-20KB), thumb impression (20-50KB), and handwritten declaration rules.

Updated 2026-10-24Explore →
Exam Guidelines⏱️ 7 min

RRB NTPC, Group D & ALP Photo and Signature Upload Rules: 20-50KB Size & Plain Background Guide

Railway Recruitment Board (RRB) photo (20-50KB) and signature (10-40KB) specifications for NTPC, Group D, ALP, and Technician exams. Dimensions and rejection rules.

Updated 2026-10-24Explore →
Exam Guidelines⏱️ 8 min

NEET UG Passport Photo, Postcard Photo (4x6) and Signature Specifications: 80% Face Coverage Guide

NTA NEET UG passport photo (10-200KB), postcard photo 4x6 inches (10-200KB), signature (4-30KB), and fingers/thumb impression upload rules with 80% face coverage.

Updated 2026-10-24Explore →
Exam Guidelines⏱️ 7 min

JEE Main Photo & Signature Upload Requirements: 10-200KB File Size, Aspect Ratio & Dimensions Guide

Official NTA JEE Main photo (10-200KB) and signature (4-30KB) upload guidelines. Aspect ratio, dimensions, category certificate rules, and compression steps.

Updated 2026-10-24Explore →
Exam Guidelines⏱️ 7 min

CUET UG Photo, Signature & Category Certificate Upload Guidelines: Exact KB & Dimensions

Common University Entrance Test (CUET UG) photograph (10-200KB), signature (4-30KB), and caste certificate upload specifications and dimensions.

Updated 2026-10-24Explore →
Exam Guidelines⏱️ 8 min

State PSC (UPPSC, BPSC, MPSC, MPPSC) Photo & Signature Upload Guidelines: Specifications & Dimension Tables

State Public Service Commission photo and signature upload rules. UPPSC merged photo-signature box (under 50KB), BPSC specifications, MPSC dimensions, and MPPSC guidelines.

Updated 2026-10-24Explore →
Exam Guidelines⏱️ 7 min

How to Reduce Photo Size to 20KB to 50KB for Online Application Forms Without Losing Quality

Step-by-step tutorial to compress photos to 20KB, 35KB, or 50KB for government exam forms (SSC, UPSC, IBPS) without blurry or pixelated faces.

Updated 2026-10-24Explore →
Exam Guidelines⏱️ 8 min

11 Common Reasons Exam Application Photos & Signatures Get Rejected & How to Prevent Them

Discover the top 11 reasons why government exam applications (UPSC, SSC, IBPS, Railways) get rejected due to photo and signature errors, and how to avoid them.

Updated 2026-10-24Explore →
Finance⏱️ 9 min

Old vs New Tax Regime: Detailed Comparison with ₹8L, ₹12L, ₹15L & ₹20L Salary Examples (Budget 2024 Slabs)

Compare Indian Old vs New Tax Regime (Section 115BAC revised) for FY 2024-25 & 2025-26. Salary-wise worked examples for ₹8L, ₹12L, ₹15L, and ₹20L CTC with ₹75k standard deduction.

Updated 2026-10-25Explore →
Finance⏱️ 8 min

HRA Exemption Calculation Guide: Section 10(13A) Rules, 3-Clause Formula & Metro vs Non-Metro Breakdown

How to calculate HRA exemption under Section 10(13A). 3-clause formula, 50% metro vs 40% non-metro, rent receipts, landlord PAN rules, and worked examples.

Updated 2026-10-25Explore →
Finance⏱️ 8 min

Section 80C & 80D Deductions: Complete Eligibility List, Investment Limits & Maximum Tax Savings

Complete guide to Section 80C (₹1.5 Lakh limit) and Section 80D (health insurance up to ₹1 Lakh). Eligible instruments: EPF, PPF, ELSS, NPS, and medical checkups.

Updated 2026-10-25Explore →
Finance⏱️ 8 min

How Mutual Fund SIP Works: Rupee Cost Averaging, Compounding & Step-Up SIP Wealth Creation Strategy

Learn how Systematic Investment Plans (SIP) work in mutual funds. Rupee cost averaging, compounding returns, step-up SIP multiplier effect, and 15x15x15 rule.

Updated 2026-10-25Explore →
Finance⏱️ 7 min

Flat vs Reducing Balance Interest Rate for Home Loans: How Banks Calculate EMI with Worked Examples

Understand the critical difference between flat interest rates and reducing balance rates for home and personal loans. Mathematical formulas and true APR exposed.

Updated 2026-10-25Explore →
Finance⏱️ 9 min

FD vs RD vs PPF vs Mutual Fund SIP: Detailed Return, Risk, Tax & Liquidity Comparison for Indian Investors

Compare Fixed Deposit (FD), Recurring Deposit (RD), Public Provident Fund (PPF), and Mutual Fund SIP. Interest rates, lock-in periods, and tax implications analyzed.

Updated 2026-10-25Explore →
Finance⏱️ 7 min

GST Invoice Rules for Small Businesses, Freelancers & Composition Scheme in India: Mandatory Fields & Timelines

Complete guide to GST invoice rules under Section 31 of CGST Act. Mandatory fields, invoice serial numbers, HSN/SAC codes, reverse charge, and composition bills of supply.

Updated 2026-10-25Explore →
Finance⏱️ 8 min

CTC vs Gross vs In-Hand Salary Breakdown in India: EPF, Gratuity, PT & TDS Explained

Understand the difference between CTC, Gross Pay, and Net In-Hand Salary in India. Detailed components: Basic, HRA, Special Allowance, PF, Gratuity, PT, and TDS.

Updated 2026-10-25Explore →
Finance⏱️ 7 min

Gratuity Calculation Rules in India: Formula, 5-Year Eligibility & ₹20 Lakh Tax Exemption Limit under Payment of Gratuity Act 1972

How to calculate gratuity in India under the Payment of Gratuity Act 1972. Formula (15*Basic*Tenure/26), 5-year eligibility rule, and ₹20 Lakh tax exemption limit.

Updated 2026-10-25Explore →
Railways⏱️ 8 min

How to Read IRCTC PNR Status: Complete Guide to CNF, RAC, WL, GNWL, RLWL, PQWL & Confirmation Chances

Complete guide to Indian Railways PNR status codes: CNF, RAC, WL, GNWL, RLWL, PQWL, TQWL, and RSWL. How waitlist confirmation priority works.

Updated 2026-10-25Explore →
Railways⏱️ 7 min

IRCTC Chart Preparation Timings: First Chart, Second Chart & Current Booking Ticket Rules Explained

When is IRCTC train chart prepared? First chart timings (4 hours prior), second chart (30 mins), RAC berth allotment, and current booking counter discounts.

Updated 2026-10-25Explore →
Railways⏱️ 7 min

Indian Domestic Airline Baggage Allowance Rules: IndiGo, Air India & SpiceJet Cabin & Check-in Weight Limits

Complete guide to cabin baggage (7kg) and check-in baggage (15kg/25kg) rules for Indian domestic flights. IndiGo, Air India, SpiceJet, and Akasa Air excess baggage charges.

Updated 2026-10-25Explore →
File Tools⏱️ 7 min

How to Merge, Split, Compress & Sign PDF Files 100% Privately in Your Browser Without Uploading to Cloud Servers

Discover how browser-native WebAssembly & Web Workers process confidential PDF documents locally on your device without transmitting data to remote servers.

Updated 2026-10-25Explore →
File Tools⏱️ 7 min

JPG vs PNG vs WebP: Which Image Format Should You Use and When? Performance, Quality & Transparency Compared

Compare JPG, PNG, and WebP image formats. Lossy vs lossless compression, alpha transparency, Core Web Vitals performance, and best use cases for web and print.

Updated 2026-10-25Explore →