In-depth guides on finance, tax, health, Islamic finance, coding, AI and digital tools — updated August 2026.
How to generate and submit an XML sitemap to Google Search Console, what to include, priorities explained, and common sitemap mistakes Indian website owners make.
How to write title tags, meta descriptions, Open Graph and Twitter Card tags that improve click-through rates from Google.
How to check colour contrast ratios for WCAG AA and AAA compliance — with examples for Indian government and e-commerce websites.
What hashing is, how MD5, SHA-1, SHA-256 and SHA-512 differ, which to use for passwords vs file verification, and common use cases.
How to read Terms of Service and Privacy Policies — red flags, data collection clauses, and what Indian apps commonly hide in their legal documents.
How to validate a PAN card number, decode the PAN format, identify entity type and avoid fraud with fake PAN numbers.
What Unix timestamps are, how to convert them to readable dates, IST timezone handling, and common uses in Indian apps and payment systems.
How to validate a GSTIN, decode what each digit means, identify fake GST numbers and check registration status.
Calculate exact trip fuel costs for petrol, diesel and CNG vehicles in India. Covers mileage tips and city vs highway rates.
How gold price is calculated per gram, tola and sovereign, the 24K vs 22K vs 18K purity difference, making charges, GST on gold, and how to verify your jeweller's calculation.
The difference between markup and margin, how to calculate gross vs net profit, correct pricing for products and services, and what a healthy margin looks like in Indian small businesses.
Updated NIST 2026 password guidelines, why your current password is probably weak, passphrase method, length vs complexity tradeoff, and the best free password managers for India.
How to calculate days, weeks and months between dates, business days vs calendar days, countdown to events, and common date maths errors to avoid.
How ideal body weight formulas work, why Indian standards differ from Western charts, waist-to-height ratio vs BMI, and what the number actually means for your health.
Nisab threshold 2026, 2.5% on eligible assets, Zakat on gold, silver, savings, business assets, and liabilities — with scholarly references.
Nisab threshold 2026, 2.5% on eligible assets, Zakat on gold, silver, savings, business assets, and liabilities — with scholarly references from Darul Ifta.
Mandatory fields on a rent receipt, when the landlord's PAN is required, revenue stamp rules above ₹5,000, and common HRA claim rejections.
The 8-glasses myth debunked, weight-based hydration formula, early signs of dehydration, and how climate and exercise change your daily target.
How Base64 encoding works, why emails and APIs use it, encoding images vs text, and common mistakes when decoding corrupted data.
Common regex patterns for emails, phone numbers, and PAN/GST validation, how to read regex syntax, and a built-in cheatsheet for Indian data formats.
How diff algorithms work, comparing legal documents and contracts, code review use cases, and tips for spotting sneaky text changes.
Repeating text for testing, stress-testing input fields, generating filler content, social media spam patterns, and legitimate use cases explained.
How to write numbers in words for cheques, the Indian lakh/crore system vs international million/billion, legal amount formatting, and common bank rejection reasons.
Gratuity formula for covered and non-covered employees, 5-year rule, calculation on resignation vs retirement, and the ₹20 lakh tax-free ceiling.
Updated gratuity formula for FY 2026-27, 5-year eligibility rule, the ₹20 lakh tax exemption ceiling, and what happens during resignation vs termination.
How to calculate trip fuel cost, mileage by vehicle type, petrol vs diesel vs CNG vs EV running cost comparison, and tips to improve real-world mileage.
Color format conversions explained, picking accessible color contrasts, building a palette from one base color, and common CSS color mistakes to avoid.
How WPM is calculated, average speeds by profession, SSC and IBPS typing test requirements, touch typing basics, and how to improve 10–20 WPM in a month.
JSON syntax rules, common errors and how to fix them, formatting vs minifying, JSON vs XML, JSON Schema basics, and best practices for APIs and config files.
How image compression works, JPG vs PNG vs WebP compared, ideal quality settings for web and WhatsApp, DPI myths debunked, and safe browser-based compression.
BMR formula (Mifflin-St Jeor & Harris-Benedict), activity multipliers, calorie targets for weight loss vs gain, and Indian dietary context.
All 10 text case formats explained — when each is used in writing, coding, SEO, and social media, with real examples and style guide references.
Mandatory fields on a GST invoice, B2B vs B2C differences, e-invoicing threshold, QR code requirements, and common errors that attract notices.
Why salary is not subject to GST, when employee benefits attract GST, employer ITC on perquisites, and freelancer vs employee GST treatment.
All common conversions explained — metric to imperial, Indian units (tola, bigha, maund), temperature, speed, data storage, with quick reference tables.
How CTC breaks down into take-home pay, PF contributions, HRA, LTA, special allowances, and new vs old regime impact on monthly salary.
The three-condition HRA formula, metro vs non-metro rules, what counts as rent paid, HRA vs home loan deduction choice, and Form 12BB filing.
The 8-glasses myth debunked, weight-based formula, how activity, climate, and pregnancy change requirements, and hydration signs for Indian summers.
How employers calculate monthly TDS, why TDS changes mid-year, Form 16 Part A and B explained, declaring investments, and claiming TDS refund in ITR.
Complete new regime slab breakdown, marginal relief on surcharge, 87A rebate, standard deduction, and which regime saves more at every salary band.
ICMR daily calorie recommendations by age and gender, sedentary vs active requirements, Indian food calorie reference table, and calorie deficit for weight loss.
All four discount formulas, final price with GST and discount combined, the successive discount trap, and BOGO deal real value calculation.
Blog posts, landing pages, academic essays, emails, social media — exact recommended word counts backed by SEO data and platform research.
New tax slab rates, rebate under 87A, which regime saves more at every salary level, HRA, standard deduction, and how to choose correctly.
BMI vs ideal weight, Hamwi and Devine formulas, Indian body composition differences, waist-to-height ratio, and what the numbers actually mean.
Entropy in plain English, why length beats complexity, how modern crackers work, the passphrases method, and a strength checklist.
GST slabs 0%–28%, inclusive vs exclusive, CGST/SGST/IGST split, reverse GST formula, and the composition scheme explained.
When freelancers must register, what services are taxable, input tax credit, quarterly vs monthly filing, and common costly mistakes.
Step-by-step formula for total marks percentage, CGPA to percentage conversion, aggregate for multiple subjects, and scholarship cut-offs.
Upper age limits, category relaxations, the official 1 August cutoff, how to calculate exactly on the cutoff, and common eligibility mistakes.
How the day countdown works, leap year edge cases, milestone birthdays in days, and celebrating your 10,000th day.
Why picking a number 1–10 isn't truly random, how computers generate it, bias in human selection, and real uses from coin flips to decisions.
How exchange rates are set, mid-market vs bank rate, hidden fees on cards and apps, best apps for live rates, and travel money tips for India.
The tip formula, restaurant tipping by service quality, 12 service types, country-by-country breakdown, bill splitting, and India-specific customs.
How RNGs work, true random vs pseudorandom, why Math.random() is insecure, Fisher-Yates shuffle, picking giveaway winners, simulating dice.
Limits for Twitter, Instagram, LinkedIn, Google Ads, SMS (GSM-7 vs Unicode), YouTube, email subject lines, and meta descriptions explained.
Manual calculation steps, leap year handling, school admission cutoffs by Indian state, UPSC/SSC age rules, and retirement age milestones.
All 6 percentage formulas, GST slabs and reverse GST, CBSE exam marks, salary hike calculation, and the successive discounts trap.
BMI formula, WHO vs Indian ICMR standards, waist circumference cut-offs, BMI for children using IAP charts, limitations, and next steps.
Complete Indian BMI chart by height and gender, ICMR thresholds vs WHO, BMI for children, and how to interpret your result correctly.
CGPA to percentage formulas for each university, CBSE best-of-five rule, Anna University formula, VTU formula, and equivalence for job applications.
NIST-updated guidelines, the passphrase method, 7 mistakes to avoid, and the best free password managers of 2026.
How QR codes work, how to scan and create them, static vs dynamic, and how to avoid quishing scams surging across India in 2026.
Exact limits for Google SEO, Twitter, LinkedIn, Instagram, TikTok, YouTube, email subject lines, Google Ads, and academic writing.
What AP, Chicago, MLA, APA, Google, Apple, and Microsoft style guides actually say — with a complete cheat sheet for every context.
The 6-stage design workflow, why Lorem Ipsum works, how to generate it in Figma, VS Code, and WordPress — and when it becomes a blocker.