by Utilnaut — free, private, no sign-up required
Convert text between camelCase, snake_case, PascalCase, kebab-case, and UPPER_SNAKE_CASE. Essential for developers working across different naming conventions.
Generate Lorem Ipsum placeholder text by paragraphs, sentences, or words. Customize length for mockups, wireframes, and UI prototyping — free and instant.
Count words, characters, sentences, and paragraphs in real time. Also shows estimated reading time — perfect for articles, essays, and social media posts.
Compare two texts and highlight additions, deletions, and changes. Great for reviewing edits, comparing code snippets, or spotting content differences instantly.
Convert text into clean, URL-friendly slugs for blog posts and permalinks. Removes special characters and replaces spaces with hyphens automatically.
Remove or highlight duplicate lines from text. Supports case-sensitive and insensitive modes — useful for cleaning up lists, emails, and log files.
Sort text lines alphabetically (A–Z or Z–A), by length, or randomly. Supports reverse order and case-insensitive sorting — ideal for organizing lists and data.
Escape and unescape special characters in JavaScript, JSON, HTML, and SQL strings. Handles quotes, newlines, tabs, and unicode escapes automatically.
Free online Base64 encoder and decoder. Convert text or files to Base64 format and decode Base64 strings back to plain text. Runs entirely in your browser.
Encode or decode URLs using percent-encoding (encodeURIComponent). Safely handle spaces, special characters, and query parameters for APIs and web apps.
Encode and decode HTML entities including &, <, >, and '. Prevent XSS vulnerabilities and ensure safe HTML output in templates and emails.
Decode JWT tokens to inspect the header, payload, and claims. Verifies expiration and displays all fields clearly. Runs locally — your token never leaves the browser.
Convert text to hexadecimal and decode hex strings back to readable text. Useful for debugging binary data, network protocols, and low-level programming tasks.
Convert characters to Unicode code points, UTF-8 hex, and JavaScript escape sequences. Supports emoji, CJK characters, and all Unicode ranges. Runs in your browser.
Convert text to Morse code and decode Morse back to text. Supports letters, numbers, and punctuation — great for learning and amateur radio communication.
Escape and unescape backslash sequences in strings. Handles \n, \t, \r, \\ and unicode escapes — essential for JSON, regular expressions, and file paths.
Format, beautify, minify, and validate JSON data with syntax highlighting. Spot errors instantly and copy clean output. The fastest free online JSON formatter.
Convert JSON arrays to CSV and CSV data back to JSON. Supports nested objects and custom delimiters. Perfect for data migration and spreadsheet workflows.
Convert JSON to YAML and YAML to JSON instantly. Useful for Kubernetes configs, CI/CD pipelines, and any project using both formats interchangeably.
Format, minify, and validate XML with indentation control. Spot malformed tags and beautify raw XML from APIs, SOAP services, and config files instantly.
View and parse CSV data as a formatted table in your browser. Handles commas, quotes, and various delimiters — paste your CSV and preview it instantly.
Write Markdown and preview the rendered output side by side. Supports GitHub Flavored Markdown including tables, code blocks, and task lists.
Format and beautify SQL queries with proper indentation and keyword capitalization. Supports SELECT, INSERT, UPDATE, CREATE, and complex nested queries.
Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes instantly. Verify file integrity and test checksums — all processed locally in your browser.
Generate HMAC codes with a custom secret key using SHA-1, SHA-256, or SHA-512. Verify API signatures and create message authentication codes securely.
Generate strong, secure passwords with custom length, uppercase, lowercase, numbers, and symbols. Meet any site's complexity requirements — free and instant.
Generate UUID v1, v4, and v5 unique identifiers or bulk generate many at once. Essential for database IDs, API tokens, and distributed system record keys.
Generate ULID unique identifiers — time-sortable like a timestamp but random like a UUID. Ideal for database IDs that need chronological ordering by default.
Hash passwords and verify bcrypt hashes with a configurable cost factor. Industry standard for secure password storage used by Django, Rails, and Node.js.
Generate random strings with a custom character set, length, and count. Create API keys, session tokens, verification codes, and random passwords instantly.
Convert numbers between binary, octal, decimal, and hexadecimal. Supports large numbers and shows all four base representations simultaneously — instantly.
Convert between Arabic numbers and Roman numerals (I, V, X, L, C, D, M). Supports 1 to 3,999. Perfect for clocks, chapter numbers, and historical dates.
Perform AND, OR, XOR, NOT, left shift, and right shift bitwise operations on integers. Shows binary representation of all inputs and results side by side.
Safely evaluate math expressions including arithmetic, exponents, and trig functions. Supports constants like π and e — a safe, browser-based calculator.
Convert Unix epoch timestamps to human-readable dates and vice versa. Supports milliseconds and seconds — essential for debugging logs, APIs, and databases.
Calculate the exact difference between two dates in years, months, and days. Also add or subtract days, weeks, or months from any date. Free and instant.
Parse and explain cron expressions in plain English. Preview the next 10 execution times and validate syntax — essential for scheduled jobs and CI pipelines.
Convert times between any two timezones worldwide. Shows current time in multiple cities and accounts for Daylight Saving Time. Supports UTC offset display.
Convert colors between HEX, RGB, HSL, HSV, CMYK, and OKLCH. Includes a color picker with real-time preview — essential for web designers and CSS developers.
Create linear and radial CSS gradients visually with live preview. Customize colors, angle, and stop positions, then copy the generated CSS code directly.
Generate color palettes from a base color — shades, tints, complementary, triadic, and analogous schemes. Perfect for UI design, branding, and Tailwind CSS.
Check WCAG AA and AAA color contrast ratios for text and backgrounds. Ensure your color combinations meet accessibility standards for web and app design.
Browse and copy the complete Tailwind CSS color palette. All shades from 50 to 950 — click any swatch to copy its HEX value or Tailwind CSS class name.
Generate CSS flexbox layouts visually with live preview. Configure justify-content, align-items, flex-direction, gap, and wrap — then copy the generated CSS.
Build CSS grid layouts visually. Define columns, rows, gaps, and template areas with live preview. Copy ready-to-use CSS grid code for your web project.
Create CSS box shadows with live preview. Configure offset, blur, spread, color, and inset. Stack multiple shadows and copy the final CSS box-shadow property.
Generate CSS border-radius values visually. Create rounded corners, ellipses, and custom shapes with live preview — copy the exact CSS shorthand for any design.
Minify and compress CSS code by removing whitespace, comments, and redundant rules. Reduce stylesheet file size for faster page loads — paste, compress, and copy.
Convert between px and rem CSS units with a configurable base font size. Displays a full conversion table — essential for responsive and accessible web design.
Test regular expressions against text with live match highlighting. Supports all JavaScript regex flags (g, i, m, s, u) and displays match groups and indices instantly.
Minify and compress JavaScript by removing whitespace and comments. Reduce JS file size for faster page loads — paste your code and copy the minified output.
Query JSON data using JSONPath expressions with live results. Test $.store.book[*].author style queries against any JSON structure — with instant highlighting.
Complete reference for all HTTP status codes — 1xx, 2xx, 3xx, 4xx, and 5xx. Includes name, description, and use cases for every code from 100 Continue to 511.
Look up MIME types (Content-Type) by file extension or search by type. Find the correct header value for .jpg, .pdf, .json, .wasm, and hundreds of file formats.
View your current IP address, user agent, browser name, OS, and screen resolution. All data is read from your browser request — nothing is logged or stored.
Parse URLs into protocol, hostname, port, pathname, query parameters, and hash fragment. Debug links, analyze query strings, and understand URL structure instantly.
Query DNS records (A, AAAA, MX, TXT, NS, CNAME) for any domain via DNS over HTTPS. Check propagation, SPF, DKIM, and DMARC records without any tools installed.
Convert images to Base64 data URIs for embedding in HTML, CSS, or JSON APIs. Supports JPEG, PNG, GIF, WebP, and SVG — drag and drop or click to upload.
Optimize and minify SVG files by removing metadata, comments, and redundant elements. Reduce SVG file size significantly without any visible quality loss.
Generate the SHA-256 hash of any local file to verify integrity. Compare checksums to detect file corruption or tampering — the file never leaves your browser.
Generate QR codes for text, URLs, WiFi networks, vCards, and email. Customize size and error correction, then download as PNG — free, no signup required.
Decode QR codes from uploaded images or your device camera. Instantly extract the encoded URL, text, vCard, or other data from any QR code image.
Generate barcodes in Code128, Code39, EAN-13, EAN-8, UPC-A, and ITF-14 formats. Download as SVG or PNG for labels, shipping, retail, and inventory systems.
Decode barcodes from uploaded images. Supports Code128, Code39, EAN, UPC, and Data Matrix. Upload an image to extract the encoded value instantly.
Validate and convert ISBN-10 and ISBN-13 book identifiers. Checks the check digit, formats the ISBN correctly, and converts between both standard formats.
Generate software license keys in XXXX-XXXX-XXXX-XXXX format with custom characters and segment lengths — ideal for software activation and trial key systems.
Generate TOTP one-time passwords compatible with Google Authenticator, Authy, and 1Password. Test 2FA codes and generate secure TOTP secrets for your app.
Create vCard (.vcf) contact files with name, phone, email, and company info. Export as QR code for easy sharing — compatible with iPhone, Android, and Outlook.
Generate QR codes to share WiFi credentials instantly. Guests scan to join without typing the password — supports WPA2 and WPA3 encryption. Free and private.