Free Online Tools
Developer Tools
22 free, browser-native tools. No uploads, no account, no cost.
Browser-native
100% WebAssembly — no server
No account needed
Open and use instantly
Zero tracking
No analytics or profiling
Always free
No hidden tiers or limits
JSON Formatter & Validator Online
Format, validate, and beautify JSON data online for free with our advanced JSON Formatter. Instantly detect errors, improve readability, and debug APIs or structured data in your browser—no installation or registration required. Perfect for developers, data analysts, and anyone working with JSON who values privacy and speed.
Free Password Generator Online - Generate Strong & Secure Passwords Instantly
Generate strong, random, and secure passwords online with our free Password Generator. Customize password length and character types to protect your accounts from hacking and unauthorized access. All password creation is done instantly in your browser for maximum privacy—no data is ever stored or sent to a server.
Free UUID Generator Online - Generate UUID v4, v1, v7 Instantly
Create random UUID version 4 (v4) identifiers online instantly with our UUID Generator. Ideal for developers, database administrators, and API designers who need globally unique IDs without collisions. Fast, secure, and browser-based—no signup or installation required.
Base64 Encoder & Decoder
Easily encode text or files to Base64 and decode Base64 strings online with our free, secure Base64 Encoder & Decoder. Perfect for developers handling API data, debugging web responses, or preparing encoded content. All processing is local and private—no uploads or data storage.
Free Online Regex Tester & Validator
Test, debug, and validate regular expressions online with our free Regex Tester. Instantly see real-time matches, apply flags, and fine-tune your regex patterns in a secure browser environment. No installation, no data sharing—ideal for developers, QA, and students.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa online with our Timestamp Converter. Instantly transform epoch time for development, debugging, or data analysis. Fast, accurate, and secure—no data leaves your browser.
Color Picker & Converter
Pick colors and convert between HEX, RGB, and HSL formats online with our Color Picker & Converter. Instantly preview, copy, and use color codes for web design, graphics, and development. 100% browser-based, fast, and private.
Markdown Previewer
Write, edit, and preview Markdown online with live rendering using our Markdown Previewer. Instantly see formatted output as you type—perfect for documentation, notes, and content creation. No uploads, no registration, and works on any device.
URL Encoder/Decoder
Encode or decode URLs online for safe web usage, development, and debugging. Instantly convert special characters for valid URL components in your browser—no installation or data sharing required. Fast, secure, and mobile-friendly.
HTML Escape/Unescape
Convert special characters to HTML entities and back online with our HTML Escape/Unescape tool. Safely prepare text for web pages, emails, or code with instant browser-based processing. No uploads, no risk—just fast, accurate results.
JWT Decoder
Decode and inspect JSON Web Tokens (JWT) securely online in your browser. Instantly view JWT headers and payloads for debugging, development, or learning—no uploads, no risk of data exposure. 100% private and free.
Diff Checker
Compare two blocks of text and highlight differences online with our Diff Checker. Instantly see line-by-line changes for code review, editing, or document comparison. Fast, private, and browser-based—no files are uploaded or stored.
Hash Generator - MD5, SHA, BLAKE2
Generate cryptographic hashes online instantly with support for MD5, SHA-1, SHA-256, SHA-512, and BLAKE2. Hash text or files for security, integrity checks, or development—no data leaves your device. Fast, secure, and free.
SQL Formatter & Beautifier
Format, beautify, and minify SQL queries online instantly with our SQL Formatter & Beautifier. Supports all major SQL dialects and highlights syntax errors for clean, readable code. Perfect for developers, DBAs, and students—no installation needed.
Mock Data Generator - Users, Emails, Addresses
Generate realistic fake data online for testing, development, or QA with our Mock Data Generator. Instantly create users, emails, addresses, phone numbers, and more in CSV or JSON format. All data is generated locally—no real user information or uploads.
Meta Tag Generator - Free SEO Meta Tags Generator Online
Generate SEO meta tags online for free. Create title, description, Open Graph, and Twitter meta tags for better search engine visibility.
Binary & Hex Converter – Convert Binary, Decimal, Hex, Octal
Convert between binary, decimal, hexadecimal, and octal number systems online instantly. Any-field entry updates all bases simultaneously—free, fast, and browser-based.
CSS & JS Minifier – Minify Code Online Free
Minify CSS and JavaScript files online for free. Reduce file size instantly with size savings percentage shown—copy or download your minified output. Browser-based, no uploads.
JSON to CSV Converter – Convert JSON Data to CSV Free
Convert JSON arrays to CSV format online instantly. Auto-detects keys, supports nested objects, custom delimiters, and live table preview—download your CSV file free.
Markdown to HTML Converter – Convert MD to HTML Online Free
Convert Markdown to HTML online with live preview. See rendered output or raw HTML instantly as you type—download or copy the result. Browser-based, no uploads, free.
IP Lookup – Find Location, ISP & Details of Any IP Address
Look up any IP address online to find its country, city, ISP, timezone, and geolocation. Auto-detects your public IP and supports manual lookup of any IPv4 or IPv6 address—free.
Cron Expression Generator & Explainer – Build Cron Jobs Online
Generate and explain cron expressions online with a visual builder. Get plain-English descriptions, see the next 5 run times, and choose from common presets—free, instant, browser-based.
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