Format JSON, encode Base64, convert URLs, and transform data — all instantly in your browser. No data sent to any server.
Click any tool to get started — no signup required
Turn plain text into 150+ elegant calligraphy, cursive, and stylish Unicode fonts for social profiles.
Write Markdown and see a live HTML preview instantly. Copy the raw HTML or download it as a file.
Beautify, minify and validate JSON data instantly. Syntax highlighting with clear error detection.
Encode text or files to Base64 and decode Base64 strings back to plain text or downloadable files.
Encode special characters in URLs for safe transmission, or decode percent-encoded URLs back to readable text.
Convert JSON arrays and objects to CSV format. Download result as a .csv file to open in Excel or Sheets.
Convert CSV data to clean JSON format. Paste your CSV or upload a .csv file and get formatted JSON output.
Live word, character, sentence and paragraph counts with an estimated reading time.
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.
Generate random version 4 UUIDs in bulk, with hyphen and case format options.
Convert Unix epoch timestamps to human-readable dates and back, in local time and UTC.
Generate classic Lorem Ipsum placeholder text by paragraphs, sentences, or words.
Decode and inspect JWT header and payload. Decodes only — does not verify signatures.
Generate strong, cryptographically secure random passwords with a live strength indicator.
Generate SHA-1, SHA-256 and SHA-512 hashes of text or files using the native Web Crypto API.
Calculate X% of Y, what percent X is of Y, and percentage increase or decrease.
Calculate exact age in years, months and days, plus total days lived and a birthday countdown.
Compare two blocks of text and instantly see word-by-word or line-by-line differences.
Test JavaScript regular expressions live with highlighted matches and capture groups.
Calculate your Body Mass Index instantly with support for metric and imperial units.
Check WCAG AA/AAA contrast ratios between text and background colors for accessibility.
Convert typed text into natural-sounding speech using your browser's built-in voices.
Encrypt and decrypt text with a passphrase using AES-256-GCM, entirely in your browser.
Convert any title or text into a clean, URL-friendly slug instantly.
Generate cryptographically secure random numbers within any range, with optional uniqueness.
Calculate tip amount, total bill, and split between people in seconds.
Convert between JSON and XML formats instantly, right in your browser.
Your data never leaves your browser. No server processing, no logs, no tracking.
All tools run directly in your browser — results appear as you type, no waiting.
No accounts, no limits, no subscriptions. Completely free forever.
Built for developers — clean output, syntax highlighting, and easy copying.
UtilityX provides a complete set of free text processing tools built for developers, data analysts, and content creators. All tools run entirely in your browser — your data is never sent to any server, ensuring complete privacy and security.
Make your digital text stand out with our Calligraphy Generator. Turn normal text into creative combinations of Unicode scripts, mathematical alphanumeric symbols, and stylish frames suitable for bio sections on social platforms.
Our JSON Formatter is the most popular tool on UtilityX. Paste any JSON data and instantly beautify it with proper indentation for readability, or minify it to reduce file size for production use. The built-in validator highlights syntax errors and shows exactly where your JSON is broken.
Base64 is widely used in web development for encoding binary data like images, files, and authentication tokens in APIs. Our Base64 Converter lets you encode any text or file to Base64 instantly, and decode Base64 strings back to their original readable form.
Need to work with JSON data in Excel or Google Sheets? Or import CSV data into a JSON-based API? Our JSON to CSV and CSV to JSON converters handle the transformation instantly in your browser. No file size limits, no uploads, completely free.
Common questions about our developer tools
Yes! All developer and text tools on UtilityX are 100% free to use. There are no limits, no hidden fees, and no subscriptions required.
No. We process all text, JSON, CSV, and Base64 data locally inside your web browser. Your data never leaves your device, ensuring complete privacy.
Because our text tools process everything client-side, once the page is fully loaded in your browser, you can often continue formatting or converting data even if your internet connection drops.
Yes. Our JSON formatter and CSV converters are optimized to handle files up to 10MB directly in the browser without freezing.
No sign-up is required. You can instantly access and use all our developer tools anonymously.