A comprehensive and user-friendly web-based utility suite designed for developers, testers, and data analysts. This all-in-one conversion toolkit provides essential data transformation and formatting capabilities in a clean, organized interface.
Access the app here: Multi Converter Tool
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- Epoch Time Converter - Bidirectional epoch/timestamp conversion with timezone support
- Text Format Converter - Hex, Binary, Base64, URL encoding/decoding
- Color Converter - Hex, RGB, HSL color conversions with live preview
- JSON/XML Converter - Format validation, conversion, and beautification
- Finance Lab - Bank & investment calculator suite (Interest, EMI, SIP, PPF, and more)
- Code Formatter - Multi-language code beautification and minification
- JWT Decoder - JSON Web Token inspection and validation
- SQL Formatter - Query beautification and optimization
- Regex Escape - Special character escaping for regular expressions
- API Key Generator - Secure random key generation
- CSV/TSV Processor - Data parsing, manipulation, and export
- Duplicate Remover - Smart duplicate detection and removal
- Content Comparer - Side-by-side diff with highlighting
- Text Statistics - Character, word, and line counting
- Markdown Converter - Natural language to Markdown to HTML
- Geo Sight - Address geocoding and GeoJSON conversion
- Test Case Builder - Format converter for test documentation
- PassCraft - Secure password generation with customizable rules
- Image Processor - Image compression and format conversion
- Block Converter - XML to block format transformation
- Light Mode - Clean, professional interface
- Dark Mode - Eye-friendly dark theme with blue accents
- Responsive Design - Optimized for desktop, tablet, and mobile
- Mobile Layout - On phones the epoch row and tool tabs stay pinned, with tap-to-copy epoch and a 🌍 timezone toggle; the desktop layout is unchanged
- Installable App - Add it to your home screen to open it full-screen like an app, with offline support
- Tabbed Interface - Organized tool categories
- Real-time Clock - Live epoch time display with multiple timezones
- Quick Actions - Copy, clear, and export functions
- Keyboard Shortcuts - Efficient workflow support
- Regex Tools: Escape/unescape regex characters
- Duplicate Detection: Find and analyze duplicate entries in datasets
- Color Converter: HEX ↔ RGB ↔ HSL with visual preview
- Image Processor: Compression, resizing, format conversion
- Color Picker: Interactive color selection with copy functionality
- Base64 Operations: Encode/decode with error handling
- Binary Converter: Binary ↔ Decimal ↔ Hex ↔ Text conversion
- JWT Decoder: Parse and validate JWT tokens
- Password Generator: Secure password creation with customizable options
- API Key Generator: Cryptographically secure API key generation
- Interest & Deposits: Compound Interest, Simple Interest, Fixed Deposit (FD), Recurring Deposit (RD)
- Loan / EMI: EMI calculator with year-by-year amortization schedule
- SIP & Investments: SIP and Lumpsum calculators with growth breakdown
- Govt Schemes & Utility: PPF, NSC, KVP, Sukanya Samriddhi Yojana (SSY), CAGR, Rule of 72
- Markdown Converter: Natural Language → Markdown → HTML pipeline
- JSON Tools: Validate, format, and convert JSON data
- CSV/TSV Processor: Advanced spreadsheet data manipulation
- XML Converter: Convert XML to Block XML format with error detection
- Query String Tools: Convert web queries ↔ JSON
- URL Encoder/Decoder: Handle URL encoding/decoding
- Geocoding Tool: Location search with coordinate lookup
- GeoJSON Converter: Transform coordinates to GeoJSON format
- Test Case Builder: Convert descriptive formats to structured test cases
- Content Comparer: Side-by-side text comparison with difference highlighting
- Code Formatter: Auto-format and beautify code (SQL, JSON, XML, JavaScript, etc.)
- ID Generator: Generate sequential database IDs with custom increments
- Location Geocoding: Address → coordinates conversion
- Map Integration: OpenStreetMap visualization links
- GeoJSON Export: Create downloadable geographic data files
- Coordinate Format Support: Multiple coordinate input formats
- Query Formatter: Text processing, epoch conversion, data counting
- Conversion Suite: Encoding, color tools, password generation, image processing, Finance Lab
- Block Conversion: XML processing and validation
- JSON Conversion: JSON utilities and web query tools
- Content Comparer: Text difference analysis
- Code Refiner: Code formatting and beautification
- Case Master: Test case building and Excel export
- Geo Sight: Geographic tools and coordinate conversion
- Pure Client-Side - No server dependencies, runs entirely in browser
- Vanilla JavaScript - No external frameworks required
- CSS3 Styling - Modern styling with CSS variables for theming
- Local Storage - Persistent user preferences
- Modern Browsers - Chrome, Firefox, Safari, Edge (latest versions)
- Progressive Enhancement - Graceful degradation for older browsers
- Mobile Support - Touch-friendly phone layout with larger tap targets
- Installable (PWA) - Can be installed on Android, iPhone, and desktop Chrome/Edge
- Lightweight - Fast loading and minimal resource usage
- Offline Capable - Works without an internet connection after the first visit (Geo Sight lookups still need internet)
- Memory Efficient - Optimized for large data processing
- API Development - Convert timestamps, format JSON, generate test data
- Data Analysis - Process CSV files, remove duplicates, compare datasets
- Frontend Development - Convert colors, format code, compress images
- Testing - Generate test cases, compare outputs, validate data
- Documentation - Convert Markdown, format text, generate passwords
- Open the tool in your web browser
- Select the desired converter from the navigation menu
- Input your data in the provided fields
- Use the conversion buttons to process your data
- Copy or download results as needed
- Local Conversions - All conversion/formatting tools process your input entirely in the browser; that data is never sent to any server
- No Account Storage - Data isn't saved server-side unless a tool explicitly says so (e.g. Geo Sight's geocoding lookups)
- Session-Only - Locally processed data is cleared when the browser is closed, aside from saved preferences (theme, etc.) in local storage
- Geo Sight - Address lookups are sent to the public OpenStreetMap Nominatim API
- Fonts/Icons & Clippy - Font Awesome and Clippy.js are loaded from third-party CDNs (cdnjs, jsDelivr)
- Analytics - The site uses Google Analytics, which sets cookies and collects usage data per Google's policies (AdSense is present in the code but not currently active/serving ads)
- Client-Side Processing - Conversion data never leaves your device
- Secure Algorithms - Industry-standard encoding/hashing methods
- Toggle between light and dark modes using the theme button
- Preferences are saved locally for consistent experience
- Adjustable parameters for most conversion tools
- Format options for exports and outputs
- Timezone settings for time-related conversions
- App Guide - Comprehensive tool documentation
- What's New - Latest features and improvements
- Tooltips - Contextual help for all functions
- Tool-specific instructions available within each converter
- Sample data and examples provided for complex tools
- Error messages with clear explanations and solutions
Simply visit Multi Converter Tool - no installation required!
- Android - Open the site in Chrome → ⋮ menu → Install app
- iPhone/iPad - Open the site in Safari → Share → Add to Home Screen
- Desktop - In Chrome or Edge, click the install icon in the address bar
git clone https://github.com/nit-tha/ConvertorApp.git
cd ConvertorApp
python -m http.server 8000
# Open http://localhost:8000 in your browser- API Testing - JWT decoding, Base64 encoding, JSON validation
- Data Conversion - Format transformation for different systems
- Code Formatting - Beautify and organize code across multiple languages
- Time Calculations - Epoch conversions for timestamp handling
- Test Case Management - Convert descriptive test cases to structured formats
- Data Comparison - Side-by-side content analysis
- Test Data Generation - Create test datasets with date ranges and IDs
- Format Validation - Ensure data integrity across different formats
- CSV Processing - Clean, analyze, and transform spreadsheet data
- Duplicate Analysis - Identify and remove duplicate entries
- Geographic Data - Convert addresses to coordinates for mapping
- Format Conversion - Transform data between JSON, CSV, XML formats
- Mobile Layout & Installable App (NEW, v2.1.95) - Phone-friendly layout with a pinned epoch row and tool tabs, and the tool can now be installed to the home screen and used offline. New app icon and link-preview artwork.
- Finance Lab (NEW) - Replaced the Case converter button with a bank & investment calculator suite: Interest & Deposits, Loan/EMI, SIP & Investments, and Govt Schemes & Utility, each with summary stats and a year-by-year breakdown table.
- Web Lab (NEW) - Added a mini HTML/CSS/JS playground with separate inputs, live preview, and a larger viewport.
- Excel Flow - Added bulk row/column transformations with delimiter auto-detect, dedupe, wrapping presets, and Excel-friendly output.
- Processor (Video) - Added Video mode under Processor with client-side compression, trim support, format conversion, size comparison, and processing loader.
- Semantic versioning for clear update tracking
- Feature additions documented in What's New section
- Backward compatibility maintained across versions
- Comprehensive testing across all supported browsers
- Regular validation of conversion algorithms
- User feedback integration for continuous improvement
- Frontend - HTML5, CSS3, Vanilla JavaScript
- Icons - Font Awesome
- Hosting - GitHub Pages
- APIs - OpenStreetMap Nominatim (for geocoding)
- Libraries - JSZip, Mammoth.js (for document processing)
Free to use, not free to reuse. This tool is free to use in your browser, but the source code here is for reference only, not for copying into other projects. See LICENSE for the full terms. © 2026 Nitin Thakur. All rights reserved.
- Clippy.js - MIT licensed assistant library by pi0
- Clippy Character - © Microsoft Corporation (nostalgic retro feature)
- Font Awesome - Free icons by Fonticons, Inc. (icons CC BY 4.0, fonts SIL OFL 1.1, code MIT)
- Geocoding - Geo Sight lookups use the OpenStreetMap Nominatim API; map data © OpenStreetMap contributors, available under the ODbL
Note: This tool is designed to be maintenance-free for end users. All updates are seamless and automatic when accessing the latest version, including the installed app. No installation, configuration, or manual updates required.
For the most current features and detailed usage instructions, please refer to the in-app App Guide.