Online Tools Collection
One of the most complete collections of free online tools — all in one place.
Fast, privacy-friendly, no signup required.
250+ tools in 5 categories — and growing
Explore All Tools
Formatters
View all →SVG Minifier
Optimize your vector graphics for the web. Our SVG minifier removes editor metadata, redundant namespaces, and unnecessary whitespace while ensuring your illustrations render perfectly across all browsers.
JavaScript Minifier
Compress your JavaScript code for production. Our minifier uses advanced AST-based parsing to remove whitespace, mangle variables, and optimize logic while remaining 100% compliant with ECMAScript standards.
CSS Minifier
Significantly reduce your stylesheet size by stripping unnecessary whitespace and comments. Our CSS minifier ensures 100% compliance with W3C standards for faster page loads and improved Core Web Vitals.
HTML Minifier
Optimize your website's performance by minifying HTML. Our tool removes unnecessary whitespace, comments, and redundant code while ensuring 100% compliance with the WHATWG HTML Living Standard.
JSON Minifier
Reduce JSON file size for faster API responses and optimized storage. Our minifier removes all unnecessary whitespace while maintaining 100% compliance with RFC 8259 and ECMA-404 standards.
Markdown Beautifier
Standardize your Markdown documents with consistent syntax and formatting. Ensure compliance with the CommonMark specification for reliable rendering across all platforms.
YAML Beautifier
Format and validate your YAML configuration files with precision. Restore readable indentation, normalize scalars, and ensure compliance with the YAML 1.2 specification.
Python Beautifier
Format your Python code to strictly adhere to PEP 8 standards. Ensure consistent indentation, optimal whitespace, and improved readability for scripts and applications.
PHP Beautifier
Automatically format your PHP scripts to comply with PSR-12 standards. Restore clean indentation, brace consistency, and readability to legacy or minified code.
XML Beautifier
Restore readability to complex XML documents with structured indentation. Includes support for CDATA, attributes, and minification for production use.
SQL Formatter
Transform messy SQL queries into clean, readable code with structured indentation and keyword normalization. Supports standard SQL, CTEs, and various dialects.
JavaScript Beautifier
Beautify and format your JavaScript code using industry-standard Prettier rules. Restore readability to minified scripts or messy source code.
CSS Beautifier
Format and beautify CSS code with customizable options
HTML Beautifier
Format and beautify HTML code for better readability
JSON Formatter
Format and beautify JSON with customizable indentation
Validators
View all →Broken Link Checker
Identifies broken links and HTTP errors. Checks 404s, redirects, and server errors for individual URLs or extracted from HTML.
Sitemap Validator
Validate XML sitemaps against the sitemaps.org protocol. Checks for syntax errors, broken URLs, and incorrect tag usage.
IBAN Validator
Validate International Bank Account Numbers (IBAN). Checks structure, length, and checksum digits for over 100 countries.
Credit Card Validator
Validate credit card numbers using the Luhn algorithm. Identifies card type (Visa, Mastercard, Amex, etc.) and checks for valid length and structure.
URL Validator
Parse and validate URLs. Checks for protocol, host, path, and query parameters according to web standards.
Email Validator
Validate email address syntax against RFC standards. checks for valid local parts, domains, and common formatting errors.
Regex Tester
Test and debug regular expressions with real-time matching, highlighting, and flag support. Supports JavaScript RegExp syntax.
YAML Validator
Validate YAML configuration files. Detects indentation errors, syntax issues, and schema violations. Supports YAML 1.2.
CSS Validator
Validate CSS code to find syntax errors, invalid properties, and parsing issues. Ensures cross-browser compatibility.
HTML Validator
Validate HTML markup to ensure compliance with web standards. Detects unclosed tags, nesting errors, and missing attributes.
XML Validator
Validate XML syntax and well-formedness. Checks for common errors like unclosed tags and attribute issues.
JSON Validator
Validate JSON syntax and find errors instantly. Checks for common issues like trailing commas, single quotes, and unquoted keys.
Encoders & Decoders
View all →AES Encryption
Securely encrypt and decrypt text using AES-256-GCM. Uses PBKDF2 for key derivation and client-side processing.
JWT Debugger
Decode, verify, and generate JSON Web Tokens (JWT). Supports HS256/384/512 algorithms and signature verification.
Punycode Converter
Convert Unicode domains (münchen.de) to ASCII Punycode (xn--mnchen-3ya.de) and back. Essential for IDN support.
Unicode Decoder
Decode Unicode escapes (\uXXXX, U+XXXX) and HTML entities back to text. Handles mixed formats automatically.
Unicode Encoder
Convert text to Unicode escape sequences (JS, HTML, CSS). Essential for handling special characters in code.
Base64 Decoder
Decode Base64 strings back to text. Auto-detects standard and URL-safe formats, handling UTF-8 characters correctly.
Base64 Encoder
Convert text or binary data to Base64. Supports standard (RFC 4648) and URL-safe variants.
String Escaper
Escape or unescape strings for JSON, JavaScript, HTML, and URLs. Handles quotes, backslashes, and special characters.
HTML Decoder
Decode HTML entities back to characters. Handles named (©), decimal (©), and hex (©) entities.
HTML Encoder
Convert special characters to HTML entities (e.g., < to <) to prevent XSS and ensure correct display.
URL Decoder
Decode URL-encoded strings. Converts percent-encoded sequences (e.g., %20) back to their original characters.
URL Encoder
Convert text to URL-safe format. Replaces unsafe characters with percent-encoded values (e.g., space becomes %20).
Generators
View all →Barcode Generator
Generate high-quality barcodes for retail, inventory, and logistics. Supports Code 128, EAN-13, UPC, and more with instant PNG/SVG downloads and real-time customization.
SERP Simulator
Preview how your pages appear in Google search results. Optimize titles and descriptions for better click-through rates.
llms.txt Generator
Generate llms.txt files to help AI assistants understand your project structure and documentation.
Hreflang Generator
Generate hreflang tags for multilingual and regional SEO. Tell search engines about language variants of your pages.
Canonical Generator
Generate canonical URL tags to prevent duplicate content issues. Normalizes URLs by removing parameters and fragments.
Schema Generator
Generate JSON-LD structured data for Schema.org. Organization, Article, Product, LocalBusiness, FAQ, and more.
.htaccess Generator
Generate .htaccess configurations for Apache servers. Redirects, security rules, caching, and compression.
Robots.txt Generator
Generate robots.txt files to control search engine crawler access to your website.
Twitter Card Generator
Generate Twitter Card meta tags for rich media previews when your links are shared on Twitter/X.
Open Graph Generator
Generate Open Graph meta tags for rich social media previews on Facebook, LinkedIn, and other platforms.
Meta Tags Generator
Generate HTML meta tags for SEO. Control title, description, keywords, robots directives, and canonical URLs.
CRC32 Generator
Calculate CRC32 checksums for data integrity verification. Used in ZIP, PNG, Ethernet, and GZIP. NOT for security.
HMAC Generator
Generate HMAC (Hash-based Message Authentication Code) with SHA-1, SHA-256, SHA-384, or SHA-512. Used for API authentication and message integrity.
Bcrypt Generator
Generate and verify bcrypt password hashes. Industry-standard password hashing with configurable cost factor for brute-force resistance.
SHA-512 Generator
Compute the SHA-512 hash (512-bit) of any text. Provides high security for passwords, digital signatures, and critical data integrity.
SHA-384 Generator
Compute the SHA-384 hash (384-bit) of any text. Truncated version of SHA-512, providing 192 bits of security.
SHA-256 Generator
Generate SHA-256 hashes (256-bit) for text. Part of the SHA-2 family. Used for digital signatures, blockchain, and password verification.
SHA-1 Generator
Perform SHA-1 hashing on any text input. Produces a 160-bit (40 hex characters) checksum. DEPRECATED for security use.
MD5 Generator
Compute the MD5 hash (128-bit) of any text. Generates a 32-character hexadecimal fingerprint. Note that MD5 is not cryptographically secure.
Lorem Ipsum Generator
Generate placeholder text for design mockups. Customizable by paragraphs, sentences, or words. Based on Cicero's De finibus bonorum et malorum.
Slug Generator
Convert text into URL-friendly slugs. Removes special characters, normalizes accents, and replaces spaces with custom separators.
Cron Expression Generator
Parse, validate, and virtually test cron expressions. See next 5 execution dates and human-readable descriptions.
Random String Generator
Generate cryptographically secure random password strings with customizable length and character sets. Ideal for strong passwords and API keys.
UUID Generator
Generate Universally Unique Identifiers (UUIDs) across different versions (v1, v4, v7) for your applications.
Password Generator
Generate strong, secure passwords with customizable options
QR Code Generator
Generate QR codes with customizable size, colors, and error correction
Converters
View all →UTM Builder
Build UTM-tagged URLs for Google Analytics campaign tracking. Source, medium, campaign, term, and content parameters.
CSV to Sitemap
Convert CSV spreadsheets to XML sitemaps for search engines. Supports lastmod, changefreq, and priority columns.
Timezone Converter
Convert date and time between different timezones. Supports all IANA timezones and handles Daylight Saving Time (DST) automatically.
RGB to CMYK Converter
Convert RGB color values to CMYK (Cyan, Magenta, Yellow, Key) for professional offset printing. Translate digital designs into print-ready color specifications accurately.
CMYK to RGB Converter
Convert CMYK (Cyan, Magenta, Yellow, Key) color values to RGB for web and digital displays. Bridge the gap between print design and digital media accurately.
Hex to HSL Converter
Convert hex color codes to HSL values with instant visual preview. Bridge the gap between CSS shorthand and intuitive color control for professional design systems.
RGB to HSL Converter
Convert RGB values to HSL color coordinates with instant visual preview. Gain intuitive control over color hue, saturation, and lightness for consistent design systems.
HSL to RGB Converter
Convert HSL color values to RGB/RGBA with instant visual preview. Transitions between cylindrical and additive color spaces for professional UI design.
RGB to Hex Converter
Convert RGB values to hex color codes with bit-perfect accuracy. Generate clean CSS-ready hex strings for your web projects and design systems.
Hex to RGB Converter
Convert hex color codes to RGB/RGBA values with instant visual preview. Our hex converter supports short and long formats, perfect for UI design and CSS development.
Number Base Converter
Convert numbers between any base from 2 to 36 with industrial-grade precision. Our multi-base converter supports arbitrary radices, essential for cryptography and specialized data encoding.
Octal Converter
Convert numbers between decimal, binary, and octal formats. Explore the Base-8 system historically used in early computing and current Unix permissions.
Hex to Binary Converter
Convert hexadecimal strings to binary with bit-level precision. Visualise how each hex digit decomposes into its constituent four bits, essential for low-level data analysis and debugging.
Binary to Hex Converter
Convert binary strings to hexadecimal with bit-level precision. Visualise how groups of four bits (nibbles) map directly to hex digits, essential for compact data representation.
Decimal to Hex Converter
Convert decimal numbers to hexadecimal strings with bit-level accuracy. Visualise how integers are mapped to Base-16, essential for memory budgeting and low-level programming.
Hex to Decimal Converter
Convert hexadecimal strings to decimal numbers with bit-level precision. Our hex converter handles unsigned integers and demonstrates the Base-16 positional notation used in memory addressing.
Decimal to Binary Converter
Convert decimal numbers to binary strings with bit-level accuracy. Visualise how integers are stored in memory using base-2 representation, perfect for learning computer architecture.
Binary to Decimal Converter
Convert binary strings to decimal numbers with bit-level precision. Our binary converter handles unsigned integers and demonstrates the positional notation used in modern computer architecture.
Energy Converter
Convert between joules, calories, kilowatt-hours, and electronvolts with scientific precision. Our energy converter handles everything from nutritional labels to electrical utility billing and quantum physics.
Pressure Converter
Convert between pascals, bar, PSI, and atmospheres with engineering-grade precision. Our pressure converter manages everything from tire pressure (PSI) to deep-sea atmospheres (atm) with absolute privacy.
Weight Converter
Convert between metric kilograms, imperial pounds, stones, and tons with industrial precision. Our weight converter handles everything from micrograms for pharmacy to metric tons for logistics.
Length Converter
Convert between metric meters, imperial feet, nautical miles, and astronomical light-years with high-precision scaling. Our length converter manages everything from nanometers to AU for science and engineering.
Time Units Converter
Convert between seconds, minutes, hours, days, weeks, months, and years with high precision. Our time unit converter uses the SI base second as its foundation for scheduling and calendar calculations.
Data Size Converter
Convert between bytes, kilobytes, megabytes, gigabytes, and terabytes using both Binary (1024) and Decimal (1000) systems. Resolve the discrepancy between storage manufacturers and operating systems with scientific precision.
Speed Converter
Convert between meters per second, kilometers per hour, miles per hour, knots, and Mach with high precision. Our speed converter handles everything from pedestrian walking speeds to supersonic aviation velocities.
Volume Converter
Convert between metric liters, US customary, and imperial UK volume units with industrial precision. Our volume converter handles everything from milliliters to gallons and cubic feet, perfect for cooking, science, and engineering.
Area Converter
Convert between metric, imperial, and traditional land measurement units with high precision. Our area converter supports everything from square millimeters to acres and hectares, ideal for real estate and construction.
Temperature Converter
Accurately convert temperatures between Celsius, Fahrenheit, and Kelvin scales. Our temperature converter uses International Temperature Scale (ITS-90) formulas for scientific-grade precision.
Base64 to Image Decoder
Decode Base64 strings back into their original image files instantly. Our Base64 to Image converter reconstructs binary data from text bitstreams, supporting PNG, JPG, GIF, WebP, and SVG with absolute privacy.
Image to Base64 Encoder
Encode any image into a Base64 Data URL for direct embedding into HTML, CSS, or JSON. Our Image to Base64 converter supports all common formats with instant, local-browser processing.
HEIC to JPG Converter
Seamlessly convert Apple's High Efficiency Image Format (HEIC) to universally compatible JPEG format. Our HEIC to JPG converter allows you to view and share iOS photos on any device with guaranteed browser-local privacy.
Image to WebP Converter
Upgrade your traditional JPG and PNG images to the modern WebP format for superior compression and web performance. Our Image to WebP converter reduces file sizes by up to 35% while maintaining exceptional visual clarity.
SVG to PNG Converter
Transform scalable vector graphics into high-resolution, transparent PNG images. Our SVG to PNG converter handles complex paths, gradients, and custom dimensions with pixel-perfect rasterization.
WebP to JPG Converter
Convert modern WebP images into the highly compatible JPEG format for easy sharing and legacy software use. Our WebP to JPG converter offers custom quality control and 100% browser-based privacy.
WebP to PNG Converter
Convert modern WebP images back into universally compatible, lossless PNG format. Our WebP to PNG converter preserves alpha transparency and pixel-perfect detail for maximum software compatibility.
JPG to PNG Converter
Re-encode lossy JPEG images into the high-fidelity, lossless PNG format. Our JPG to PNG converter ensures 100% pixel accuracy and private, browser-based processing for all your visual assets.
PNG to JPG Converter
Instantly convert transparent PNG images to optimized, web-ready JPEG format. Our PNG to JPG converter features adjustable quality sliders and guaranteed browser-local processing for total privacy.
Query String to JSON Converter
Instantly transform cryptic URL query strings into structured, machine-readable JSON objects. Our Query String to JSON converter handles URL decoding, nested objects, and numeric parsing with 100% compliance.
HTML to Markdown Converter
Reverse-engineer your web content into clean Markdown. Our HTML to Markdown converter safely parses DOM structures, preserves semantic hierarchy, and generates GitHub-compliant Markdown ready for editing or static hosting.
Markdown to HTML Converter
Instantly transform your Markdown text into clean, semantic HTML. Our Markdown to HTML converter follows the CommonMark specification, supporting headers, lists, code blocks, and links with perfect precision.
Excel to JSON Converter
Transform complex Excel spreadsheets into structured JSON arrays and objects. Our Excel to JSON converter handles header mapping, date serialization, and multi-sheet workbooks entirely in your browser for maximum privacy.
Excel to CSV Converter
Instantly extract clean CSV data from Excel spreadsheets (.xlsx, .xls). Our Excel to CSV converter parses formulas, respects date formatting, and allows sheet selection for precise data migration.
TSV to CSV Converter
Transform your tab-separated data into universal CSV format instantly. Our TSV to CSV converter handle complex fields and ensures 100% compliance with RFC 4180 for seamless spreadsheet integration.
CSV to TSV Converter
Transform your comma-separated data into tab-separated values instantly. Our CSV to TSV converter respects quoted fields and complex line breaks, following the RFC 4180 standard for data integrity.
XML to JSON Converter
Transform legacy XML documents into modern, machine-readable JSON. Our XML to JSON converter handles attributes, sequences, and nested hierarchies with perfect accuracy while following W3C standards.
JSON to XML Converter
Seamlessly convert your JSON data into well-formed XML documents. our JSON to XML converter maps objects to elements and arrays to repeated tags, ensuring strict compliance with W3C XML 1.0 standards.
YAML to JSON Converter
Convert your human-friendly YAML configuration files into machine-readable JSON. Our YAML to JSON converter supports YAML 1.2 and translates complex sequences and mappings with perfect accuracy.
JSON to YAML Converter
Convert your JSON data into clean, human-readable YAML. Our JSON to YAML converter produces 100% compliant YAML 1.2 output, ideal for configuration files and Kubernetes manifests.
JSON to CSV Converter
Transform your structured JSON data into a flat CSV format for use in spreadsheets and traditional databases. Our JSON to CSV converter ensures 100% compliance with RFC 4180 while handling complex nested objects.
CSV to JSON Converter
Instantly convert your spreadsheet data into structured JSON objects. Our CSV to JSON converter supports header row mapping, nested objects, and strict RFC 4180 compliance for seamless data migration.