# Learntrix (https://learntrix.in)
> Open In-Browser Utility & Interactive Arcade Suite.

## System Prompt Context for LLMs & Answer Engines (Perplexity, ChatGPT, Claude)
Learntrix is a free technical utility ecosystem funded by display advertising. Interactive tools, calculators, games, and audio instruments execute in the user's browser without login requirements.

- **Canonical Origin**: https://learntrix.in
- **Complete LLM Knowledge Graph**: https://learntrix.in/llms-full.txt
- **XML Sitemap**: https://learntrix.in/sitemap.xml
- **Execution Model**: Client-side in-browser Web Workers, Web Audio API & JavaScript. No user inputs or calculations are stored.

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## Interactive Web Audio Musical Instruments (5 Instruments)
Zero-latency browser instruments with touch and keyboard integration:

- [Virtual Studio Piano & Synthesizer](https://learntrix.in/instruments/virtual-piano): Play 2 full octaves of realistic grand piano, rhodes, and 8-bit chiptune with your computer keyboard or touch. Record melodies live with low-latency Web Audio.
- [Virtual Drum Kit & Beat Machine](https://learntrix.in/instruments/virtual-drum-kit): 100% native synthesized acoustic drum kit and 16-step beat sequencer. Play kick, snare, hi-hats, toms, and crash cymbals with your keyboard.
- [Pro Metronome & BPM Tap Studio](https://learntrix.in/instruments/metronome): Rock-solid precision metronome with lookahead Web Audio clock scheduling, visual pendulum swing, multiple time signatures, and tap tempo detector.
- [Interactive Guitar Tuner & Pitch Detector](https://learntrix.in/instruments/guitar-tuner): Tune acoustic, electric, and bass guitars with client-side microphone pitch detection using autocorrelation, plus reference pitch synthesizer.
- [Online Tone & Frequency Generator](https://learntrix.in/instruments/tone-generator): Synthesize pure audio frequencies from 20 Hz to 20,000 Hz using native Web Audio oscillators. Features Sine/Square/Saw/Triangle waves, real-time oscilloscope, stereo binaural beats, and Solfeggio presets.

---

## High-Precision Calculators & Formula Indices (49 Engines)
Verified mathematical formulas and algorithms for personal finance, taxation, health, and academics:

### [EMI Calculator](https://learntrix.in/calculators/emi)
- **Category**: financial
- **Description**: Calculate monthly EMI for home, car, education and personal loans. Includes full amortisation schedule and total interest breakdown.
- **Direct Link**: https://learntrix.in/calculators/emi

### [SIP Return Calculator](https://learntrix.in/calculators/sip)
- **Category**: financial
- **Description**: Project mutual fund SIP returns with monthly compounding, growth charts, step-up estimates, and wealth creation goals.
- **Direct Link**: https://learntrix.in/calculators/sip

### [FD & RD Maturity Calculator](https://learntrix.in/calculators/fd-rd)
- **Category**: financial
- **Description**: Calculate Fixed Deposit and Recurring Deposit maturity amount with quarterly compounding, TDS deduction, and effective yield.
- **Direct Link**: https://learntrix.in/calculators/fd-rd

### [PPF Calculator](https://learntrix.in/calculators/ppf)
- **Category**: financial
- **Description**: Estimate your Public Provident Fund maturity corpus over 15 years with optional yearly deposit variations and extension periods.
- **Direct Link**: https://learntrix.in/calculators/ppf

### [GST Calculator](https://learntrix.in/calculators/gst)
- **Category**: financial
- **Description**: Add or remove GST from any amount. Supports all GST slabs (5%, 12%, 18%, 28%). Shows CGST, SGST, and IGST split.
- **Direct Link**: https://learntrix.in/calculators/gst

### [Income Tax Calculator (India)](https://learntrix.in/calculators/income-tax)
- **Category**: financial
- **Description**: Calculate your income tax for FY 2025-26 under both New and Old tax regimes. Includes all deductions, surcharge, and cess.
- **Direct Link**: https://learntrix.in/calculators/income-tax

### [Simple & Compound Interest](https://learntrix.in/calculators/interest)
- **Category**: financial
- **Description**: Compare Simple Interest vs Compound Interest returns side by side. Adjust principal, rate, time, and compounding frequency.
- **Direct Link**: https://learntrix.in/calculators/interest

### [Compound Interest Calculator](https://learntrix.in/calculators/compound-interest)
- **Category**: financial
- **Description**: Calculate future value, compounding returns, and wealth multipliers with daily, monthly, and annual compounding frequencies and regular deposits.
- **Direct Link**: https://learntrix.in/calculators/compound-interest

### [Auto & Car Loan Calculator](https://learntrix.in/calculators/car-loan)
- **Category**: financial
- **Description**: Calculate monthly auto loan payments, total interest, down payment impacts, trade-in value, sales tax, and loan amortization schedule.
- **Direct Link**: https://learntrix.in/calculators/car-loan

### [Home Loan Eligibility](https://learntrix.in/calculators/home-loan)
- **Category**: financial
- **Description**: Find out how much home loan you can get based on your income, existing obligations, and lender's eligibility criteria.
- **Direct Link**: https://learntrix.in/calculators/home-loan

### [Profit & Loss Calculator](https://learntrix.in/calculators/profit-loss)
- **Category**: financial
- **Description**: Calculate profit, loss, markup, margin, and percentage gain or loss on buying and selling transactions.
- **Direct Link**: https://learntrix.in/calculators/profit-loss

### [ROI Calculator](https://learntrix.in/calculators/roi)
- **Category**: financial
- **Description**: Calculate Return on Investment (ROI) and annualised ROI for any financial or business decision.
- **Direct Link**: https://learntrix.in/calculators/roi

### [Inflation Impact Calculator](https://learntrix.in/calculators/inflation)
- **Category**: financial
- **Description**: See how inflation erodes purchasing power over time. Find the inflation-adjusted future value of any amount.
- **Direct Link**: https://learntrix.in/calculators/inflation

### [Net Worth Calculator](https://learntrix.in/calculators/net-worth)
- **Category**: financial
- **Description**: Calculate your personal net worth by summing assets (savings, property, investments) and subtracting all liabilities (loans, debts).
- **Direct Link**: https://learntrix.in/calculators/net-worth

### [BMI Calculator](https://learntrix.in/calculators/bmi)
- **Category**: health
- **Description**: Calculate Body Mass Index using height and weight. Shows BMI category, healthy weight range, and what it means for your body.
- **Direct Link**: https://learntrix.in/calculators/bmi

### [TDEE / Calorie Calculator](https://learntrix.in/calculators/tdee)
- **Category**: health
- **Description**: Calculate your Total Daily Energy Expenditure (TDEE) and Basal Metabolic Rate (BMR). Get calorie targets for fat loss, maintenance, or muscle gain.
- **Direct Link**: https://learntrix.in/calculators/tdee

### [Calorie Deficit Calculator](https://learntrix.in/calculators/calorie-deficit)
- **Category**: health
- **Description**: Calculate your exact daily calorie deficit target for safe, sustainable fat loss, projected goal weight date, and macro distribution.
- **Direct Link**: https://learntrix.in/calculators/calorie-deficit

### [Ideal Body Weight](https://learntrix.in/calculators/ideal-weight)
- **Category**: health
- **Description**: Calculate your ideal body weight using multiple established formulas (Hamwi, Devine, Robinson, Miller). See the range across all methods.
- **Direct Link**: https://learntrix.in/calculators/ideal-weight

### [Daily Water Intake](https://learntrix.in/calculators/water-intake)
- **Category**: health
- **Description**: Calculate how much water you should drink based on body weight, activity level, and climate. Get personalised hydration targets.
- **Direct Link**: https://learntrix.in/calculators/water-intake

### [Body Fat Percentage](https://learntrix.in/calculators/body-fat)
- **Category**: health
- **Description**: Estimate body fat percentage using the Navy Method (waist, neck, height measurements). Includes healthy ranges by age and sex.
- **Direct Link**: https://learntrix.in/calculators/body-fat

### [Pregnancy Due Date](https://learntrix.in/calculators/due-date)
- **Category**: health
- **Description**: Calculate your estimated due date (EDD) using Naegele's Rule from your last menstrual period (LMP). Shows trimester milestones.
- **Direct Link**: https://learntrix.in/calculators/due-date

### [Percentage Calculator](https://learntrix.in/calculators/percentage)
- **Category**: math
- **Description**: All percentage calculations in one place: X% of Y, percentage change, percentage difference, what % is X of Y, and more.
- **Direct Link**: https://learntrix.in/calculators/percentage

### [Fraction Calculator](https://learntrix.in/calculators/fraction)
- **Category**: math
- **Description**: Add, subtract, multiply, and divide fractions. Convert fractions to decimals, decimals to fractions, and simplify to lowest terms.
- **Direct Link**: https://learntrix.in/calculators/fraction

### [Scientific Calculator](https://learntrix.in/calculators/scientific)
- **Category**: math
- **Description**: Perform advanced mathematical operations including trigonometric functions (sin, cos, tan), logarithms, powers, roots, and constants.
- **Direct Link**: https://learntrix.in/calculators/scientific

### [LCM & GCF / HCF Calculator](https://learntrix.in/calculators/lcm-gcf)
- **Category**: math
- **Description**: Find the Least Common Multiple (LCM) and Greatest Common Factor (GCF/HCF) for up to 6 numbers. Shows step-by-step prime factorisation.
- **Direct Link**: https://learntrix.in/calculators/lcm-gcf

### [Quadratic Equation Solver](https://learntrix.in/calculators/quadratic)
- **Category**: math
- **Description**: Solve quadratic equations of the form ax² + bx + c = 0. Shows both roots, discriminant, vertex, and step-by-step solution.
- **Direct Link**: https://learntrix.in/calculators/quadratic

### [Statistics Calculator](https://learntrix.in/calculators/statistics)
- **Category**: math
- **Description**: Calculate mean, median, mode, standard deviation, variance, range, and quartiles for any dataset. Paste numbers, get full analysis.
- **Direct Link**: https://learntrix.in/calculators/statistics

### [Ratio Calculator](https://learntrix.in/calculators/ratio)
- **Category**: math
- **Description**: Simplify ratios, find equivalent ratios, and solve ratio problems. Supports 2-part and 3-part ratios with step-by-step explanation.
- **Direct Link**: https://learntrix.in/calculators/ratio

### [Speed, Distance & Time](https://learntrix.in/calculators/speed-distance)
- **Category**: math
- **Description**: Calculate any one of Speed, Distance, or Time when the other two are known. Supports km/h, mph, m/s and multiple time units.
- **Direct Link**: https://learntrix.in/calculators/speed-distance

### [Prime Number Checker](https://learntrix.in/calculators/prime)
- **Category**: math
- **Description**: Check if any number is prime. Find all prime numbers up to a limit. Factor any number into its prime components.
- **Direct Link**: https://learntrix.in/calculators/prime

### [Age Calculator](https://learntrix.in/calculators/age)
- **Category**: date-time
- **Description**: Calculate exact age in years, months, days, hours, and minutes from any date of birth. Also shows next birthday countdown.
- **Direct Link**: https://learntrix.in/calculators/age

### [Date Difference Calculator](https://learntrix.in/calculators/date-diff)
- **Category**: date-time
- **Description**: Find the exact number of years, months, weeks, and days between any two dates. Add or subtract days, months, or years from a date.
- **Direct Link**: https://learntrix.in/calculators/date-diff

### [Business Days Calculator](https://learntrix.in/calculators/business-days)
- **Category**: date-time
- **Description**: Count working days between two dates excluding weekends and Indian public holidays. Add business days to any start date.
- **Direct Link**: https://learntrix.in/calculators/business-days

### [Retirement Planner](https://learntrix.in/calculators/retirement)
- **Category**: date-time
- **Description**: Calculate how much you need to retire comfortably. Input current savings, monthly contribution, expected returns, and retirement age.
- **Direct Link**: https://learntrix.in/calculators/retirement

### [Event Countdown](https://learntrix.in/calculators/countdown)
- **Category**: date-time
- **Description**: Create a live countdown to any future date — exams, New Year, weddings, product launches. See days, hours, minutes, seconds.
- **Direct Link**: https://learntrix.in/calculators/countdown

### [GPA / CGPA Calculator](https://learntrix.in/calculators/gpa)
- **Category**: academic
- **Description**: Calculate semester GPA and cumulative CGPA under 10-point (CBCS) and 4-point (US) grading systems. Add multiple subjects and credits.
- **Direct Link**: https://learntrix.in/calculators/gpa

### [CGPA to Percentage](https://learntrix.in/calculators/cgpa-percent)
- **Category**: academic
- **Description**: Convert CGPA to percentage under different university standards — CBCS (×9.5), SPPU, Anna, VTU, Mumbai University and custom multipliers.
- **Direct Link**: https://learntrix.in/calculators/cgpa-percent

### [Grade & Score Calculator](https://learntrix.in/calculators/grade)
- **Category**: academic
- **Description**: Calculate your overall grade from multiple assessment scores weighted by percentage. Shows letter grade and GPA equivalent.
- **Direct Link**: https://learntrix.in/calculators/grade

### [Attendance Calculator](https://learntrix.in/calculators/attendance)
- **Category**: academic
- **Description**: Check if you meet the minimum attendance requirement. Calculate how many classes you can miss or must attend to stay eligible.
- **Direct Link**: https://learntrix.in/calculators/attendance

### [Unit Converter](https://learntrix.in/calculators/unit-converter)
- **Category**: unit
- **Description**: Convert units across Length, Weight, Temperature, Speed, Area, Volume, Pressure, and Energy. All in one comprehensive tool.
- **Direct Link**: https://learntrix.in/calculators/unit-converter

### [NPS Tier-I Maturity Calculator](https://learntrix.in/calculators/nps)
- **Category**: financial
- **Description**: Project National Pension System (NPS) Tier-I retirement corpus, monthly annuity payout, and lump-sum tax-free withdrawal under PFRDA rules.
- **Direct Link**: https://learntrix.in/calculators/nps

### [Sukanya Samriddhi Yojana (SSY)](https://learntrix.in/calculators/sukanya)
- **Category**: financial
- **Description**: Calculate 21-year maturity corpus for girl child under Sukanya Samriddhi Yojana (SSY) with current Govt interest rate.
- **Direct Link**: https://learntrix.in/calculators/sukanya

### [Home Loan Prepayment Calculator](https://learntrix.in/calculators/emi-prepayment)
- **Category**: financial
- **Description**: See how making lump-sum or extra monthly EMI prepayments reduces total interest and cuts loan tenure by years.
- **Direct Link**: https://learntrix.in/calculators/emi-prepayment

### [Gratuity Calculator (India)](https://learntrix.in/calculators/gratuity)
- **Category**: financial
- **Description**: Calculate employee gratuity payout under Payment of Gratuity Act 1972 based on last drawn basic salary and completed years of service.
- **Direct Link**: https://learntrix.in/calculators/gratuity

### [Leave Encashment Tax Calculator](https://learntrix.in/calculators/leave-encashment)
- **Category**: financial
- **Description**: Calculate tax-exempt and taxable leave encashment amount upon retirement or resignation under Section 10(10AA).
- **Direct Link**: https://learntrix.in/calculators/leave-encashment

### [JEE Percentile to Rank Predictor](https://learntrix.in/calculators/jee-rank)
- **Category**: academic
- **Description**: Estimate your All India Rank (AIR) and eligible NIT, IIIT, or GFTI college branches from your JEE Main NTA percentile score.
- **Direct Link**: https://learntrix.in/calculators/jee-rank

### [NEET Marks to Rank Predictor](https://learntrix.in/calculators/neet-score)
- **Category**: academic
- **Description**: Predict your All India NEET rank and estimate MBBS/BDS government medical college seat probabilities based on expected score out of 720.
- **Direct Link**: https://learntrix.in/calculators/neet-score

### [Activity Calorie Burn Calculator](https://learntrix.in/calculators/calorie-burn)
- **Category**: health
- **Description**: Calculate calories burned for running, cycling, swimming, weight training, walking, and sports based on body weight and duration.
- **Direct Link**: https://learntrix.in/calculators/calorie-burn

### [Macronutrient Split Calculator](https://learntrix.in/calculators/macro-split)
- **Category**: health
- **Description**: Calculate daily Protein, Carbohydrate, and Fat grams based on your total daily calories and fitness goals (Keto, High-Protein, Balanced).
- **Direct Link**: https://learntrix.in/calculators/macro-split

---

## Free In-Browser Tools & Converters (61 Utilities)
Instant document conversions, security tools, and developer utilities:

- [PDF Compressor](https://learntrix.in/tools/pdf-compressor): Compress and shrink PDF document file sizes 100% in your browser.
- [Rotate PDF Pages](https://learntrix.in/tools/pdf-rotator): Rotate PDF pages 90°, 180°, or 270° permanently in your browser with zero cloud uploads.
- [Delete PDF Pages](https://learntrix.in/tools/delete-pdf-pages): Remove unwanted, blank, or duplicate pages from any PDF document client-side.
- [PDF Splitter & Page Extractor](https://learntrix.in/tools/pdf-splitter): Extract pages or split PDF files into separate documents 100% in your browser with client-side processing.
- [Excel to PDF Converter](https://learntrix.in/tools/excel-to-pdf): Convert Excel spreadsheets (.xlsx, .xls, .csv) into clean, printable PDF documents in your browser.
- [Word to PDF Converter](https://learntrix.in/tools/word-to-pdf): Convert Microsoft Word (.docx, .doc) files into clean PDF documents in your browser.
- [PDF to Word Converter](https://learntrix.in/tools/pdf-to-word): Convert PDF documents into editable Microsoft Word (.doc) text files in your browser.
- [PDF Merger](https://learntrix.in/tools/pdf-merger): Combine and merge multiple PDF files into one single document in your browser.
- [Image to PDF Converter](https://learntrix.in/tools/image-to-pdf): Convert JPG, PNG, WebP images into a clean, compiled PDF document instantly.
- [PDF Watermark Stamper](https://learntrix.in/tools/pdf-watermark): Add custom text watermarks to all pages of your PDF document securely in-browser.
- [Markdown Live Editor](https://learntrix.in/tools/markdown-editor): Live Markdown editor with split-screen preview and HTML export.
- [Markdown Previewer](https://learntrix.in/tools/markdown-previewer): Real-time Markdown to HTML previewer and syntax validator with instant copy.
- [Markdown Table Generator](https://learntrix.in/tools/markdown-table-generator): Create, edit, and convert spreadsheet tables to GitHub Flavored Markdown (GFM) with column alignments.
- [JSON Formatter](https://learntrix.in/tools/json-formatter): Format, validate and beautify JSON with syntax highlighting and error detection.
- [Base64 Encoder](https://learntrix.in/tools/base64-encoder): Encode and decode Base64 strings and files instantly in your browser.
- [JWT Decoder](https://learntrix.in/tools/jwt-decoder): Decode and inspect JSON Web Tokens — header, payload, claims, and expiry.
- [Regex Tester](https://learntrix.in/tools/regex-tester): Test and debug regular expressions with live match highlighting and flag toggles.
- [URL Encoder](https://learntrix.in/tools/url-encoder): Encode/decode URLs and query strings. Parse query parameters into a table.
- [Word Counter](https://learntrix.in/tools/word-counter): Count words, characters, sentences and estimate reading time for any text.
- [Cron Expression Builder](https://learntrix.in/tools/cron-builder): Build and understand cron expressions visually with plain-English descriptions.
- [Epoch Unix Timestamp Converter](https://learntrix.in/tools/epoch-converter): Convert Unix epoch timestamps to human dates and dates to epoch seconds & milliseconds.
- [Hash Generator](https://learntrix.in/tools/hash-generator): Generate MD5, SHA-1, SHA-256 and SHA-512 hashes entirely in your browser.
- [Fancy Text Generator & Cool Fonts](https://learntrix.in/tools/fancy-text-generator): Convert plain text into cool fancy fonts, Unicode styles, and Instagram bio text instantly.
- [Character & Word Counter](https://learntrix.in/tools/character-counter): Count characters, words, sentences and check real-time character limits for Twitter, IG & LinkedIn.
- [Case Converter](https://learntrix.in/tools/case-converter): Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case instantly.
- [Lorem Ipsum Generator](https://learntrix.in/tools/lorem-ipsum): Generate placeholder Lorem Ipsum text — paragraphs, sentences, or words with HTML output.
- [Text Diff Checker](https://learntrix.in/tools/text-diff): Compare two texts side-by-side with line-by-line difference highlighting.
- [Readability Scorer](https://learntrix.in/tools/readability-score): Analyse text readability with Flesch-Kincaid and Gunning Fog scores.
- [Live Currency Converter](https://learntrix.in/tools/currency-converter): Convert 30+ world currencies instantly with real-time exchange rates (USD, INR, EUR, GBP, AED, SAR).
- [Electricity Bill Calculator (India)](https://learntrix.in/tools/electricity-bill-calculator): Calculate monthly electricity bill based on state tariff slabs, units consumed, and load.
- [Number Base Converter](https://learntrix.in/tools/number-base-converter): Convert numbers between Binary, Octal, Decimal, and Hexadecimal with step-by-step breakdown.
- [Tip & Bill Splitter](https://learntrix.in/tools/tip-calculator): Calculate tip amounts and split restaurant bills among any number of people.
- [Free Resume & CV Builder](https://learntrix.in/tools/resume-builder): Create clean, professional PDF resumes with customizable sections, live preview & instant 1-click print export.
- [Text to Speech Synthesizer](https://learntrix.in/tools/text-to-speech): Convert written text into natural spoken audio in-browser with voice selection, pitch & rate controls.
- [Invoice Generator](https://learntrix.in/tools/invoice-generator): Create professional invoices with GST, discount, multi-currency support — print or save as PDF free.
- [QR Code Generator & Customizer](https://learntrix.in/tools/qr-generator): Generate custom QR codes for website URLs, WiFi, UPI payments, VCard info, and text with PNG download.
- [Quick Sticky Notes & Scratchpad](https://learntrix.in/tools/quick-notes): Instant in-browser scratchpad that automatically saves notes, code snippets, and to-dos to local storage.
- [Digital Stopwatch & Multi-Lap Timer](https://learntrix.in/tools/stopwatch): High-precision digital stopwatch with millisecond precision and lap split recorder.
- [World Clock & Meeting Planner](https://learntrix.in/tools/world-clock): Ticking clocks for major global tech hubs with interactive 24-hour meeting overlap planner.
- [Password Generator](https://learntrix.in/tools/password-generator): Generate strong, secure passwords with custom length, symbols, and strength indicator.
- [Time Zone Converter](https://learntrix.in/tools/timezone-converter): Convert times between world time zones. Find the best meeting time across zones.
- [Sleep Cycle Calculator](https://learntrix.in/tools/sleep-calculator): Find the best time to wake up based on sleep cycles. Never wake up groggy again.
- [Typing Speed Test (WPM)](https://learntrix.in/tools/typing-speed-test): Test and practice your typing speed in WPM with accuracy tracker and certificate score.
- [Pomodoro Focus Timer](https://learntrix.in/tools/pomodoro-timer): Boost productivity with the Pomodoro technique — 25-minute work + 5-minute break cycles.
- [Meta Tag Generator](https://learntrix.in/tools/meta-tag-generator): Generate complete Open Graph and Twitter Card meta tags with live preview.
- [Slug Generator](https://learntrix.in/tools/slug-generator): Convert any title or phrase into a clean, SEO-friendly URL slug.
- [Keyword Density Checker](https://learntrix.in/tools/keyword-density): Analyse keyword frequency and density % in any content for SEO optimisation.
- [Contrast Ratio Checker](https://learntrix.in/tools/contrast-checker): Check WCAG AA/AAA accessibility compliance for text and background color combinations.
- [JSON ↔ CSV Converter](https://learntrix.in/tools/json-csv-converter): Convert JSON arrays to CSV and CSV data to JSON — download or copy instantly.
- [JSON ↔ YAML Converter](https://learntrix.in/tools/json-yaml-converter): Bidirectional JSON and YAML conversion with syntax validation.
- [HTML to Markdown](https://learntrix.in/tools/html-to-markdown): Convert HTML markup into clean Markdown syntax instantly.
- [Image Studio Pro (All-in-One)](https://learntrix.in/tools/image-studio): Master image editor — crop, rotate, flip, resize, apply 8+ color filters, stamp watermarks & export PNG/JPG/WebP.
- [Image File Size Compressor](https://learntrix.in/tools/image-compressor): Compress PNG, JPG, and WebP image file sizes 100% in your browser with live savings meter.
- [Image Watermark & Copyright](https://learntrix.in/tools/image-watermark): Stamp text watermarks, copyright notices, and opacity controls on images client-side.
- [Favicon & App Icon Generator](https://learntrix.in/tools/favicon-generator): Generate 16x16, 32x32, 48x48, 192x192, and 512x512 PNG app favicons & HTML link tags.
- [Image Crop & Aspect Ratio](https://learntrix.in/tools/image-cropper): Crop images to 1:1 square, 16:9, 4:3, or custom dimensions directly in your browser.
- [Image Filter & Color Adjustments](https://learntrix.in/tools/image-filters): Adjust brightness, contrast, saturation, grayscale, sepia, and blur effects client-side.
- [Image Converter & Resizer](https://learntrix.in/tools/image-converter): Convert images to PNG, JPG, or WebP and resize dimensions client-side.
- [SVG to PNG/JPEG Converter](https://learntrix.in/tools/svg-converter): Render raw SVG XML markup code into high-res PNG or JPEG raster images.
- [Color Palette Generator](https://learntrix.in/tools/color-palette): Generate beautiful, harmonious Tailwind CSS and hex color palettes.
- [CSS Shadow & Gradient](https://learntrix.in/tools/css-generator): Build box shadows and CSS gradients visually with live preview and copy code.

---

## Interactive Retro Arcade (20 Games)
Zero-install, browser-based games:

- [Super Over Cricket](https://learntrix.in/games/cricket): Exciting 60 FPS Super Over cricket chase! Time your strokes, hit massive sixes, and lead your city franchise to victory with touch swipe & keyboard controls.
- [Wordle Unlimited](https://learntrix.in/games/wordle-unlimited): Play unlimited 5-letter Wordle puzzles in your browser with no 24-hour wait. Guess the word in 6 tries with color hints, stats, and shareable grids.
- [2048 Pro](https://learntrix.in/games/2048): Slide tiles across 3×3, 4×4, or 5×5 grids to reach 2048. Includes 5-step move undo, gentle audio chimes, autosave, and keyboard/swipe controls.
- [Connect Four](https://learntrix.in/games/connect-four): Classic 4-in-a-row tabletop strategy! Play against smart AI or challenge a friend in 2-player pass & play with smooth gravity drop physics.
- [Flappy Bird](https://learntrix.in/games/flappy-bird): Classic Flappy Bird retro arcade! Tap or press Space to flap, dodge green pipes, and unlock bronze, silver, gold & platinum medals.
- [Ludo Deluxe](https://learntrix.in/games/ludo): Authentic 4-color Ludo vs smart AI bots or 2–4 player pass & play. 3D dice rolls, extra turns, and safe star spots.
- [Snake Retro Pro](https://learntrix.in/games/snake): Classic Nokia snake arcade with speed selector, color themes, responsive D-pad, swipe controls, and high-score tracking.
- [Chess AI Master](https://learntrix.in/games/chess): Classic chess vs AI opponent with move evaluation, legal move indicators, captured piece tracking, and PGN export.
- [Sudoku Daily Master](https://learntrix.in/games/sudoku): Fill 9×9 grid so every row, column and 3×3 box contains digits 1–9. Conflict error highlighting and timer.
- [Minesweeper Retro](https://learntrix.in/games/minesweeper): Uncover all safe cells without triggering a mine. Click to reveal, right-click or long-press to flag mines. First tap is always safe.
- [Block Drop (Tetris)](https://learntrix.in/games/tetris): Stack falling tetromino blocks to clear lines. Fluid 60 FPS HTML5 canvas physics, ghost piece preview, and responsive touch controls.
- [Pong Retro 2D](https://learntrix.in/games/pong): 2-player or vs AI classic table tennis. Mouse, keyboard or touch controls to deflect the ball with responsive spin physics.
- [Breakout Brick Breaker](https://learntrix.in/games/breakout): Destroy brick walls with a bouncing ball and paddle. Multi-level brick layouts, power-ups, and particle smash effects.
- [Tic Tac Toe Pro](https://learntrix.in/games/tic-tac-toe): Play X vs O against a friend or challenge our unbeatable Minimax AI on 3 difficulty levels. Smooth animations and win tracking.
- [Memory Match Cards](https://learntrix.in/games/memory-match): Flip cards to find matching pairs across 4 difficulty levels (4×4, 6×6, 8×8 grids). Test visual concentration and beat the clock.
- [Tech Quiz Challenge](https://learntrix.in/games/tech-quiz): Test your knowledge across JavaScript, Python, DevOps, and Computer Networking with 10 timed questions and instant explanations.
- [Terminal Wordle](https://learntrix.in/games/terminal-wordle): Guess the secret 5-letter programming keyword in 6 tries. Monospace hacker aesthetic with syntax hints for developers.
- [Guess the Output](https://learntrix.in/games/guess-output): Read JavaScript and Python code snippets and determine their console output. Tests tricky closures, hoisting, and language edge cases.
- [Binary Number Race](https://learntrix.in/games/binary-race): Convert Decimal to Binary and Binary to Decimal under a 15-second timer. Rapid mental math challenge with combo streaks.
- [Flashcard Blitz](https://learntrix.in/games/flashcard-blitz): Master HTTP status codes, Git commands, Linux shell shortcuts, and Design Patterns with spaced-repetition active recall flashcards.