# KaruviLab - AI Agent Guidance KaruviLab is a privacy-first, zero-server-upload collection of local browser tools. This document provides instructions and metadata for AI Agents navigating the site. ## Navigation & Architecture - The site uses Next.js with React 19. - Tools execute locally in the browser using WebAssembly and Web Workers. No files are uploaded to servers. - The UI follows WCAG 2.2 AA accessibility standards. ## Available Tools - **Aes Encrypt Decrypt**: Encrypt and decrypt text or files using AES, entirely in your browser. - URL: /security-tools/aes-encrypt-decrypt/ - Category: security - **Age Calculator**: Calculate age in years, months, and days - URL: /calculators/age-calculator/ - Category: calculators - **Audio Converter**: Convert audio files between formats like MP3 and WAV locally for compatibility. - URL: /media-tools/audio-converter/ - Category: media - **Banking Tools**: Advanced financial data parsers for EMV, SWIFT, and core banking logs - URL: /developer-tools/banking-tools/ - Category: developer - **Barcode & QR Scanner**: Scan barcodes and QR codes using camera - URL: /utilities/barcode-scanner/ - Category: utilities - **Base64 Encode/Decode**: Encode or decode Base64 strings - URL: /developer-tools/base64/ - Category: developer - **Base64url Converter**: Encode or decode text to URL-safe Base64 format to safely transmit data. - URL: /security-tools/base64url-converter/ - Category: security - **Background Remover**: Remove image backgrounds locally - URL: /image-tools/bg-remover/ - Category: image - **Bmi Calculator**: Calculate your Body Mass Index (BMI) and health category to track fitness goals. - URL: /calculators/bmi-calculator/ - Category: calculators - **Box Shadow Generator**: Design CSS box shadows visually and copy clean CSS snippets for layouts. - URL: /developer-tools/box-shadow-generator/ - Category: developer - **Bulk Image Resize**: Resize many images at once - URL: /image-tools/bulk-resizer/ - Category: image - **CAGR Calculator**: Compound Annual Growth Rate - URL: /calculators/cagr-calculator/ - Category: calculators - **Calculator**: Unified calculator with seamless standard and scientific modes - URL: /calculators/calculator/ - Category: calculators - **Calendar**: Professional, local-first calendar with Tamil mode support. - URL: /productivity/calendar/ - Category: productivity - **Card Masker**: Mask card numbers automatically to securely display and store sensitive financial info. - URL: /security-tools/card-masker/ - Category: security - **Chart & Graph Generator**: Create beautiful charts from your data - URL: /productivity/chart-generator/ - Category: productivity - **Cipher Tools**: Encrypt and decrypt text using classical ciphers like Caesar or Vigenère. - URL: /security-tools/cipher-tools/ - Category: security - **Code Minifier**: Minify CSS, JS, and HTML - URL: /developer-tools/code-minifier/ - Category: developer - **Color Converter**: Convert color formats (HEX, RGB, HSL) to style web applications. - URL: /developer-tools/color-converter/ - Category: developer - **Color Match**: Pick the exact color swatch under time pressure to test your visual accuracy. - URL: /break-time-tools/color-match/ - Category: break-time - **Color Palette Extractor**: Extract dominant color palettes from any image to design themes. - URL: /image-tools/color-palette-extractor/ - Category: image - **Command Cheat Sheet**: Look up development and system commands instantly to speed up your workflow. - URL: /developer-tools/command-cheat-sheet/ - Category: developer - **Compound Interest Calculator**: Calculate compounded growth on your investment. - URL: /calculators/compound-interest/ - Category: calculators - **Compress PDF**: Reduce PDF file size - URL: /pdf-tools/compress-pdf/ - Category: pdf - **Compress**: Bundle files and folders into optimized ZIP archives to save storage space. - URL: /image-tools/compress/ - Category: image - **Contrast Checker**: Verify background and foreground contrast to meet WCAG accessibility standards. - URL: /developer-tools/contrast-checker/ - Category: developer - **Core Banking Parser**: Parse core banking trace logs into JSON - URL: /banking-tools/core-banking-parser/ - Category: banking - **Countdown Timer**: Set timers for upcoming milestones or deadlines to keep track of tasks. - URL: /productivity/countdown-timer/ - Category: productivity - **Crontab Editor**: Build crontab expressions visually and translate them to plain English. - URL: /developer-tools/crontab-editor/ - Category: developer - **Csp Builder**: Construct secure Content Security Policy headers to protect sites from XSS. - URL: /security-tools/csp-builder/ - Category: security - **Csr Generator**: Generate CSR requests and private keys locally to secure web servers. - URL: /security-tools/csr-generator/ - Category: security - **Csv To Json**: Convert tabular CSV file content into structured JSON objects. - URL: /developer-tools/csv-to-json/ - Category: developer - **Currency Converter**: Convert between world currencies - URL: /calculators/currency-converter/ - Category: calculators - **Data Calculator**: Units, transfer time, cost, & hashes - URL: /calculators/data-calculator/ - Category: calculators - **Date Calculator**: Add, subtract, or diff dates - URL: /calculators/date-calculator/ - Category: calculators - **Diff Checker**: Compare two text snippets - URL: /developer-tools/diff-checker/ - Category: developer - **Directory Manifest**: Generate recursive folder maps of local directories to document structure. - URL: /security-tools/directory-manifest/ - Category: security - **Discount Calculator**: Find sale price and savings - URL: /calculators/discount-calculator/ - Category: calculators - **Ecdh Key Exchange**: Generate shared cryptographic keys using ECDH protocols. - URL: /security-tools/ecdh-key-exchange/ - Category: security - **Ecdsa Sign**: Sign and verify payload strings using secure ECDSA certificates. - URL: /security-tools/ecdsa-sign/ - Category: security - **EMI Calculator**: Loan EMI, interest, and amortization - URL: /calculators/emi-calculator/ - Category: calculators - **Emv Tlv Tree**: Inspect and parse EMV TLV payment packets for bank transaction analysis. - URL: /banking-tools/emv-tlv-tree/ - Category: banking - **Extract Images**: Pull images out of a PDF - URL: /pdf-tools/extract-images/ - Category: pdf - **Fake Data Generator**: Generate realistic fake data for testing - URL: /developer-tools/fake-data-generator/ - Category: developer - **Fixed Deposit (FD)**: FD maturity amount and interest earned - URL: /calculators/fd-calculator/ - Category: calculators - **File Viewer & Diff**: Local text editor and diff checker - URL: /file-tools/file-viewer-diff/ - Category: developer - **Financial Freedom Calculator**: Calculate your path to FIRE and plan your retirement. - URL: /calculators/financial-freedom-calculator/ - Category: calculators - **Code Formatter**: Auto-format code in many languages - URL: /developer-tools/format/ - Category: developer - **2048**: Slide and merge tiles to reach 2048. Addictive puzzle game — fully offline. - URL: /break-time-tools/game-2048/ - Category: break-time - **Gif Creator**: Convert videos or image frames into optimized, loopable animated GIF files. - URL: /media-tools/gif-creator/ - Category: media - **Glassmorphism Generator**: Generate CSS code for modern frosted-glass card designs. - URL: /developer-tools/glassmorphism-generator/ - Category: developer - **Gradient Generator**: Design linear and radial CSS gradients visually for backgrounds. - URL: /developer-tools/gradient-generator/ - Category: developer - **Grammar Checker**: Spot common writing errors - URL: /utilities/grammar-checker/ - Category: utilities - **Gratuity Calculator**: Estimate standard gratuity benefits based on salary and tenure. - URL: /calculators/gratuity-calculator/ - Category: calculators - **GST Calculator**: Calculate GST (Add/Remove) for Indian tax slabs (5%, 12%, 18%, 28%) with CGST, SGST, and IGST breakdown. - URL: /calculators/gst-calculator/ - Category: calculators - **Hash Generator**: MD5, SHA-1/256/512 hashes - URL: /security-tools/hash-generator/ - Category: security - **Hash Map Visualizer**: Visualize collision resolution strategies in hash map indexes. - URL: /developer-tools/hash-map-visualizer/ - Category: developer - **Hkdf Generator**: Derive cryptographically strong keys from raw input using HKDF. - URL: /security-tools/hkdf-generator/ - Category: security - **Hmac Generator**: Calculate keyed-hash message authentication codes (HMAC) to verify integrity. - URL: /security-tools/hmac-generator/ - Category: security - **Hra Calculator**: Calculate your House Rent Allowance tax exemptions. - URL: /calculators/hra-calculator/ - Category: calculators - **HTML Entities**: Convert characters to HTML entities - URL: /security-tools/html-entities/ - Category: security - **HTML Online Viewer**: Professional live HTML/CSS/JS editor and sandboxed preview - URL: /developer-tools/html-viewer/ - Category: developer - **Iban Validator**: Check the validity and checksums of IBAN bank account numbers. - URL: /security-tools/iban-validator/ - Category: security - **Image to Base64**: Encode images as Base64 data URIs - URL: /image-tools/image-base64/ - Category: image - **Image Compressor**: Reduce image file size - URL: /image-tools/image-compressor/ - Category: image - **Image Converter**: Convert between JPG, PNG, WebP, AVIF, and BMP - URL: /image-tools/image-converter/ - Category: image - **Image Crop**: Crop images to ratio or freeform - URL: /image-tools/image-crop/ - Category: image - **Image Resizer**: Resize images to exact dimensions - URL: /image-tools/image-resizer/ - Category: image - **Image Seo**: Optimize image file names and alt attributes to rank higher on search engines. - URL: /seo-tools/image-seo/ - Category: seo - **Image to PDF**: Convert images into a single PDF - URL: /pdf-tools/image-to-pdf/ - Category: pdf - **Income Tax**: Calculate annual income tax estimates and select the best tax regime. - URL: /calculators/income-tax/ - Category: calculators - **Inflation Calculator**: Purchasing power over time - URL: /calculators/inflation-calculator/ - Category: calculators - **Speed Tester**: Measure your internet connection speed - URL: /utilities/internet-speed-test/ - Category: utilities - **Invoice Generator**: Build professional custom invoices and download them as PDFs. - URL: /calculators/invoice-generator/ - Category: calculators - **Iso8583 Bitmap Decoder**: Parse and visualize ISO 8583 payment card transaction bitmaps. - URL: /security-tools/iso8583-bitmap-decoder/ - Category: security - **Iso8583 Message Parser**: Decode raw financial transaction strings into human-readable messages. - URL: /security-tools/iso8583-message-parser/ - Category: security - **JSON ↔ CSV**: Convert between JSON and CSV - URL: /developer-tools/json-csv/ - Category: developer - **JSON Formatter**: Format and validate JSON - URL: /developer-tools/json-formatter/ - Category: developer - **JWT Decoder**: Inspect JSON Web Tokens - URL: /security-tools/jwt-decoder/ - Category: security - **Lock / Unlock PDF**: Add or remove PDF passwords - URL: /pdf-tools/lock-unlock/ - Category: pdf - **Log Analyzer**: Analyze and filter server and application access log files. - URL: /developer-tools/log-analyzer/ - Category: developer - **Lorem Ipsum**: Generate custom dummy placeholder text for layouts and copy. - URL: /developer-tools/lorem-ipsum/ - Category: developer - **Luhn Validator**: Check identification card numbers using the Luhn checksum algorithm. - URL: /developer-tools/luhn-validator/ - Category: developer - **Lumpsum Calculator**: Future value of one-time investment - URL: /calculators/lumpsum-calculator/ - Category: calculators - **Markdown Editor**: Professional Markdown editor with live GitHub-style preview, Mermaid diagrams, and high-performance export options. - URL: /utilities/markdown/ - Category: utilities - **Memory Match**: Flip cards and match pairs. A classic memory-training game with best-score tracking. - URL: /break-time-tools/memory-match/ - Category: break-time - **Merge PDF**: Combine multiple PDFs into one - URL: /pdf-tools/merge-pdf/ - Category: pdf - **Meta Tags**: Generate and preview HTML meta tags to optimize website social sharing. - URL: /seo-tools/meta-tags/ - Category: seo - **Mic & Camera Tester**: Test your microphone and camera - URL: /utilities/mic-camera-tester/ - Category: utilities - **Minesweeper**: Classic Minesweeper puzzle. Clear the board without clicking on hidden mines. Multiple difficulties and mobile friendly controls. - URL: /break-time-tools/minesweeper/ - Category: break-time - **Mutual Fund Returns**: Calculate absolute and annualized returns - URL: /calculators/mutual-fund-returns/ - Category: calculators - **Nanoid Generator**: Generate secure, URL-friendly unique string IDs using NanoID. - URL: /developer-tools/nanoid-generator/ - Category: developer - **Notes**: Write and save markdown notes locally in your browser. - URL: /productivity/notes/ - Category: productivity - **Nps Calculator**: Calculate National Pension Scheme (NPS) maturity amounts. - URL: /calculators/nps-calculator/ - Category: calculators - **Numeral & Encoding Converter**: Universal encoding converter. Paste hex, binary, Base64, URL-encoded, HTML entities, Unicode escapes, or plain text. Auto-detect format and convert to all others instantly. Supports UTF-8, UTF-16, UTF-32, Base64, URL encoding, HTML entities, JavaScript/Python/CSS escapes, Morse code, ROT13, JWT decode, and more. 100% local — nothing leaves your browser. - URL: /calculators/numeral-converter/ - Category: calculators - **Oauth Token Decoder**: Inspect and decode OAuth 2.0 access and refresh token payloads. - URL: /security-tools/oauth-token-decoder/ - Category: security - **Og Preview**: Preview Open Graph card layouts for social media platforms. - URL: /seo-tools/og-preview/ - Category: seo - **Page Numbering**: Add page numbers to PDF - URL: /pdf-tools/page-numbering/ - Category: pdf - **Password Generator**: Strong, random passwords - URL: /security-tools/password-generator/ - Category: security - **Pbkdf2 Generator**: Derive cryptographic keys using PBKDF2 password hashing. - URL: /security-tools/pbkdf2-generator/ - Category: security - **PDF to Word**: Convert PDF text to editable Word - URL: /pdf-tools/pdf-to-word/ - Category: pdf - **Pem Viewer**: Inspect and parse PEM certificate and private key files. - URL: /security-tools/pem-viewer/ - Category: security - **Percentage Calculator**: Find percentages and ratios - URL: /calculators/percentage-calculator/ - Category: calculators - **Phone Mockup Generator**: Wrap screenshots in realistic device frames - URL: /image-tools/phone-mockup-generator/ - Category: image - **Pomodoro Timer**: Boost your focus and productivity using the Pomodoro technique. - URL: /productivity/pomodoro-timer/ - Category: productivity - **PPF Calculator**: Public Provident Fund maturity & interest - URL: /calculators/ppf-calculator/ - Category: calculators - **Private Key Checker**: Validate private key structures and format compatibility. - URL: /security-tools/private-key-checker/ - Category: security - **Public Key Inspector**: Inspect and display properties of public keys. - URL: /security-tools/public-key-inspector/ - Category: security - **QR Code Generator**: Make QR codes for URLs, text, Wi-Fi - URL: /utilities/qrcode/ - Category: utilities - **Recurring Deposit (RD)**: RD maturity and interest calculation - URL: /calculators/rd-calculator/ - Category: calculators - **Reaction Time Test**: Test your reflexes and measure your reaction speed in milliseconds. - URL: /break-time-tools/reaction-time/ - Category: break-time - **Regex Tester**: Test regular expressions live - URL: /developer-tools/regex/ - Category: developer - **Retirement Planner**: Corpus needed for your retirement - URL: /calculators/retirement-calculator/ - Category: calculators - **Robots Txt**: Generate and validate robots.txt configurations for SEO crawlers. - URL: /seo-tools/robots-txt/ - Category: seo - **Rotate PDF**: Rotate one or all pages - URL: /pdf-tools/rotate-pdf/ - Category: pdf - **Rsa Encrypt Decrypt**: Encrypt or decrypt payloads using secure RSA key pairs. - URL: /security-tools/rsa-encrypt-decrypt/ - Category: security - **Rsa Key Generator**: Generate public and private RSA key pairs locally for authentication. - URL: /security-tools/rsa-key-generator/ - Category: security - **Rsa Sign Verify**: Sign messages or verify signatures using RSA keys. - URL: /security-tools/rsa-sign-verify/ - Category: security - **Safe-to-Spend**: Daily budget planner - URL: /calculators/safe-to-spend/ - Category: calculators - **Salary Calculator**: Indian take-home salary breakdown - URL: /calculators/salary-calculator/ - Category: calculators - **Saml Decoder**: Decode and format SAML assertion payloads for identity analysis. - URL: /security-tools/saml-decoder/ - Category: security - **Seo Title**: Optimize SEO title tags to maximize search engine click-through rates. - URL: /seo-tools/seo-title/ - Category: seo - **Seo Tools**: Inspect and optimize website SEO meta tags and preview search snippets. - URL: /developer-tools/seo-tools/ - Category: developer - **SIP Calculator**: Project mutual-fund SIP returns - URL: /calculators/sip-calculator/ - Category: calculators - **Sitemap Generator**: Generate XML sitemaps to index website pages. - URL: /seo-tools/sitemap-generator/ - Category: seo - **Slug Generator**: Convert text into URL-friendly slug strings. - URL: /seo-tools/slug-generator/ - Category: seo - **Smart Unit Converter**: Natural-language unit conversion - URL: /calculators/smart-converter/ - Category: calculators - **Snake Game**: Play the classic retro Snake game. Eat food, grow longer, and set new high scores entirely in your browser. - URL: /break-time-tools/snake-game/ - Category: break-time - **Split & Copy**: Break long text into chunks - URL: /utilities/split-copy/ - Category: utilities - **Split PDF**: Extract pages from a PDF - URL: /pdf-tools/split-pdf/ - Category: pdf - **Sql Formatter**: Beautify and format complex SQL queries to improve readability. - URL: /developer-tools/sql-formatter/ - Category: developer - **Stock Average**: Weighted average buy price for stocks - URL: /calculators/stock-average-calculator/ - Category: calculators - **Stopwatch**: Track elapsed time with lap support for productivity logging. - URL: /productivity/stopwatch/ - Category: productivity - **Sudoku**: Classic 9x9 Sudoku logical number placement puzzle with multiple difficulty modes, hints, and local best times. - URL: /break-time-tools/sudoku/ - Category: break-time - **Swift Mt Mx**: Parse and inspect SWIFT MT and MX banking message structures. - URL: /banking-tools/swift-mt-mx/ - Category: banking - **SWP Calculator**: Systematic Withdrawal Plan planning - URL: /calculators/swp-calculator/ - Category: calculators - **Task Reminder**: Lightweight private to-do list - URL: /utilities/task-reminder/ - Category: utilities - **Tds Calculator**: Calculate Tax Deducted at Source (TDS) percentages. - URL: /calculators/tds-calculator/ - Category: calculators - **Text Case Converter**: Convert text between UPPERCASE, lowercase, and sentence case styles. - URL: /productivity/text-case-converter/ - Category: productivity - **Text Sorter & Deduplicator**: Sort and remove duplicates from text - URL: /productivity/text-sorter-deduper/ - Category: productivity - **Text Utility**: Clean, case convert, count words - URL: /utilities/text-utility/ - Category: utilities - **Tic-Tac-Toe**: Classic 2-player Tic-Tac-Toe right in your browser. No downloads, no sign-in. - URL: /break-time-tools/tic-tac-toe/ - Category: break-time - **Time Calculator**: Add or subtract hours and minutes - URL: /calculators/time-calculator/ - Category: calculators - **Time Zone Converter**: Compare and convert time between multiple global time zones. Real-time offsets and DST support. - URL: /productivity/timezone-converter/ - Category: productivity - **Tlv Parser**: Parse and visualize EMV TLV hex streams into clear tree structures. - URL: /security-tools/tlv-parser/ - Category: security - **Track 2 Parser**: Decode magnetic stripe Track 2 data for payment card testing. - URL: /banking-tools/track-2-parser/ - Category: banking - **Typing Speed Test**: Test and improve your typing WPM - URL: /productivity/typing-speed-test/ - Category: productivity - **Unit Converter**: Length, weight, volume, and more - URL: /calculators/unit-converter/ - Category: calculators - **Unix Timestamp**: Convert between epoch timestamps and human-readable dates. - URL: /developer-tools/unix-timestamp/ - Category: developer - **URL Cleaner**: Strip tracking parameters - URL: /utilities/url-cleaner/ - Category: utilities - **URL Encoder**: Percent-encode and decode URLs - URL: /developer-tools/url-encoder/ - Category: developer - **UTC ↔ IST**: Convert between UTC and IST - URL: /calculators/utc-ist-converter/ - Category: calculators - **Uuid Generator**: Generate secure v4 UUIDs for database and entity keys. - URL: /developer-tools/uuid-generator/ - Category: developer - **File Validator**: Validate file size and type - URL: /utilities/validate/ - Category: utilities - **Video Metadata Viewer**: Extract and inspect resolution, codec, and duration metadata from video files. - URL: /media-tools/video-metadata-viewer/ - Category: media - **Video Trim**: Trim and cut MP4 video clips directly in your browser. - URL: /media-tools/video-trim/ - Category: media - **Watermark PDF**: Add text or image watermark - URL: /pdf-tools/watermark-pdf/ - Category: pdf - **WiFi QR Code Generator**: Generate QR code to connect to WiFi - URL: /productivity/wifi-qr-code/ - Category: productivity - **Word Counter**: Count characters, words, sentences, and reading times for any text. - URL: /productivity/word-counter/ - Category: productivity - **Word Guess**: A word guessing puzzle game. Find the secret 5-letter word in 6 tries using visual feedback. - URL: /break-time-tools/word-guess/ - Category: break-time - **Word To Pdf**: Convert Word documents (DOCX) into standard PDF files locally. - URL: /pdf-tools/word-to-pdf/ - Category: pdf - **Work Hours**: Timesheet and overtime tracker - URL: /calculators/work-hours/ - Category: calculators - **World Clock**: Track time across multiple cities with business hour indicators. Ideal for global teams. - URL: /calculators/world-clock/ - Category: calculators - **X509 Viewer**: Inspect and validate X.509 security certificates and expiry details. - URL: /security-tools/x509-viewer/ - Category: security - **Xml Formatter**: Format and prettify nested XML documents to inspect data tags. - URL: /developer-tools/xml-formatter/ - Category: developer - **Yaml Json Converter**: Convert between YAML formatting and JSON objects. - URL: /developer-tools/yaml-json-converter/ - Category: developer - **Yaml Validator**: Verify and validate YAML syntax correctness. - URL: /developer-tools/yaml-validator/ - Category: developer