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• Free Online Basic Calculator A basic calculator for performing arithmetic operations. Add, subtract, multiply, and divide numbers with ease. No signup required.
• Free Online Percentage Calculator Easy-to-use online percentage calculator. Calculate percentages between numbers, find percentage of a value, and solve percentage problems instantly.
• Free Online Age Calculator Calculate age between two dates, find exact age, and determine time differences. Simple and accurate age calculations for any purpose.
• Free Online Tip Calculator Calculate restaurant tips based on bill amount, tip percentage, and number of people. Includes country-specific tipping customs and currency symbols.
• Free Online JSON Formatter & Beautifier Format and beautify JSON data instantly. Clean up messy JSON, validate syntax, and make your JSON readable with proper indentation. Free and privacy-friendly.
• Free Online JSON Minifier & Compressor Minify and compress JSON instantly. Remove whitespace and reduce file size for production. Perfect for optimizing JSON files and improving performance.
• Free Online JSON to CSV Converter Convert JSON data to CSV format instantly. Transform JSON arrays into CSV files with customizable delimiters. Perfect for importing data into Excel or Google Sheets.
• Free Online CSV to JSON Converter Convert CSV files to JSON format instantly. Transform spreadsheet data into JSON arrays with customizable options. Perfect for APIs, databases, and web applications.
• Free Online JSON to YAML Converter Convert JSON to YAML format instantly. Transform JSON data into human-readable YAML with proper indentation. Perfect for configuration files, Kubernetes manifests, and CI/CD pipelines.
• Free Online YAML to JSON Converter Convert YAML to JSON format instantly. Parse YAML files and transform them into JSON. Perfect for APIs, data processing, and working with configuration files.
• Free Online JSON to TOML Converter Convert JSON to TOML format instantly. Transform JSON data into TOML configuration format. Perfect for Rust projects, configuration files, and modern build tools.
• Free Online TOML to JSON Converter Convert TOML to JSON format instantly. Parse TOML configuration files and transform them into JSON. Perfect for data interchange and working with configuration files.
• Free Online SQL to JSON Converter Convert SQL INSERT statements to JSON format instantly. Extract data from SQL queries and transform them into JSON arrays. Perfect for data migration, testing, and API development.
• Free Online JSON to SQL Converter Convert JSON to SQL INSERT statements instantly. Transform JSON arrays into SQL INSERT queries with customizable table names. Perfect for database seeding, migrations, and data import.
• Free Online Base64 Encoder & Decoder Encode and decode Base64 data instantly. Convert text to Base64 or decode Base64 strings back to plain text. Perfect for data encoding, API work, and web development.
• Free Online UUID Generator Generate UUIDs (Universally Unique Identifiers) instantly. Create single or bulk UUIDs for databases, APIs, and applications. Supports UUID v4 with cryptographic randomness.
• Free Online URL Encoder & Decoder Encode and decode URLs instantly. Convert special characters for safe URL transmission or decode URL-encoded strings. Perfect for web development, APIs, and query strings.
• Free Online Regex Tester & Debugger Test and debug regular expressions instantly. Real-time pattern matching, capture groups, and match highlighting. Perfect for validating regex patterns and learning regex.
• Free Online Markdown to HTML Converter Convert Markdown to HTML instantly. Preview rendered output and copy clean HTML code. Supports headings, lists, links, code blocks, tables, and more.
• Free Online JWT Decoder & Validator Decode and inspect JSON Web Tokens (JWT) instantly. View header, payload, and signature parts with formatted JSON. Perfect for debugging authentication tokens and API responses.
• Free Online HTML Escape & Unescape Tool Escape and unescape HTML characters instantly. Convert special characters to HTML entities or decode them back. Perfect for displaying HTML code safely in web pages.
• Free Online XML Formatter & Beautifier Format and beautify XML instantly. Clean up messy XML, validate syntax, and make your XML readable with proper indentation.
• Free Online XML Minifier & Compressor Minify and compress XML instantly. Remove whitespace and reduce file size for production. Perfect for optimizing XML files and improving performance.
• Free Online HTML Formatter & Beautifier Format and beautify HTML instantly. Clean up messy HTML and make your code readable with proper indentation.
• Free Online HTML Minifier & Compressor Minify and compress HTML instantly. Remove whitespace, comments, and unnecessary code to reduce file size. Perfect for optimizing web pages and improving load times.
• Free Online CSS Formatter & Beautifier Format and beautify CSS instantly. Clean up messy CSS and make your stylesheets readable with proper indentation.
• Free Online CSS Minifier & Compressor Minify and compress CSS instantly. Remove whitespace, comments, and optimize code to reduce file size. Perfect for optimizing stylesheets and improving load times.
• Free Online JavaScript Formatter & Beautifier Format and beautify JavaScript instantly. Clean up messy JavaScript and make your code readable with proper indentation.
• Free Online JavaScript Minifier & Compressor Minify and compress JavaScript instantly. Remove whitespace, comments, and unnecessary code to reduce file size. Perfect for optimizing JS files and improving page performance.
• Free Online URL Parser & Query String Analyzer Parse and analyze URLs instantly. Extract protocol, host, path, query parameters, and more. Perfect for debugging URLs, understanding URL structure, and analyzing query strings.
• Free Online Cron Expression Generator & Builder Generate cron expressions easily with a visual interface. Create cron schedules for tasks, see human-readable descriptions, and preview next run times. Perfect for scheduling jobs and automation.
• Free Online Timestamp Converter - UNIX to Date Convert UNIX timestamps to readable dates and vice versa. Support for seconds and milliseconds, multiple date formats, and timezone conversion. Perfect for debugging timestamps and date calculations.
• Image Format Converter Convert images to different formats (PNG, JPEG, WebP, AVIF)
• PDF Converter Convert PDF files to images (PNG, JPEG, WebP, AVIF)
• Image Compressor Compress images to reduce file size while maintaining quality (PNG, JPEG, WebP, AVIF)
• Free Online JSON Diff Tool - Compare JSON Compare two JSON objects and see the differences instantly. Highlights added, removed, and modified properties with a visual side-by-side comparison. Perfect for debugging API responses, comparing configurations, and validating data changes.
• Sitemap A sitemap for simpletools.app, listing all the pages on the website.
• Terms of Use Terms and conditions governing the use of simpletools.app.
• Privacy Policy Detailed information about how simpletools.app collects, uses, and protects your personal data and privacy rights.
• Contact Get in touch with the simpletools.app team. Use our contact form for questions, feedback, or support regarding our free online tools.