Pretty-print, minify, and validate JSON with the error line called out.
Convert text to Base64 and back, Unicode-safe.
Read the header and payload of a JSON Web Token, with expiry checked.
SHA-1, SHA-256, and SHA-512 digests, computed in your browser.
Percent-encode or decode text and whole URLs, component by component.
Test a pattern against sample text with live match highlighting and groups.
Read a crontab line in plain English and see its next run times.
Convert between Unix time and human dates, in your zone and UTC.
Translate a color between HEX, RGB, and HSL with a live swatch.
Turn a JSON array into CSV, or a CSV table back into JSON.
Compare two blocks of text and see exactly what changed, line by line.
Minify HTML, CSS, or JavaScript code to save file size.
Format and beautify SQL queries with proper indentation.
Convert configuration files between JSON and YAML formats.
Encode or decode HTML entities to prevent rendering issues.
Escape or unescape string special characters and slashes.
Calculate octal and symbolic notations for Linux file permissions.
Parse and analyze browser, OS, and device info from a User-Agent string.
Design beautiful CSS linear and radial gradients visually.
Design outer and inset CSS box shadows visually with preview.
Design rounded borders visually for CSS custom boxes.
Convert raw SVG code into a CSS-ready percent-encoded Data URI.
Analyze color contrast ratios against WCAG 2.0 AA/AAA accessibility standards.
Extract host, path, port, protocol, and query parameters from any URL.
Query A, AAAA, MX, NS, TXT, and CNAME records using Cloudflare DoH.
Calculate subnets, hosts, ranges, broadcast, and CIDR prefix masks.
Generate cron schedules visually and translate to crontab lines.
Generate visual CSS polygon clip paths for shapes and layouts.
Generate smooth organic liquid CSS blob shapes.
Generate smooth SVG wave divider shapes for sections.
Searchable git commands quick reference guide.
Searchable regex syntax reference guide.
Searchable reference of all official HTTP status codes.
Searchable list of file extensions and MIME content types.
General operating systems and development editor shortcuts guide.
Record your screen and system/microphone audio directly in-browser.
Record audio from your microphone natively in-browser.
Generate secure Bcrypt hashes or verify passwords against hash codes.
Calculate secure keyed-hash message authentication codes (HMAC).
Encrypt and decrypt text payload with secure AES-GCM password keys.
Generate secure 2048-bit RSA Public/Private keys in PEM format.
Generate 2FA validation codes from base32 seed keys.
Generate cryptographically secure tokens, hex codes, or UUIDs.
Test password entropy, length, complexity, and get strength advice.
Generate secure BIP39 compliant 12 or 24-word passphrases.
Find geolocation metadata for any IP address.
Check server response headers and status codes in-browser.
Trace redirect loops and URL paths dynamically.
Calculate webpage source code weight in kilobytes.
Simulate a crawler bot extracting plaintext page weights.
Extract Facebook OG and Twitter meta card tags from any page.
Simulate custom mobile viewport rendering for layout testing.
Detect your public IPv4 and IPv6 addresses side-by-side in real-time.
Detect private local IP addresses leaking through WebRTC connections.
Learn how to test and verify if your DNS queries leak outside your VPN.
Check Canvas, WebGL, AudioContext, and system font footprint uniqueness.
Test your download connection transfer speed client-side.
Check round-trip ping latency to AWS, Cloudflare, and Google servers.
Inspect HTTP request headers and client environment variables.
Verify if your IP address is blacklisted on major anti-spam databases.
Trace SMTP hops and check SPF/DKIM flags from raw email headers.
Inspect a domain's DNS MX mail servers and SPF safety validation records.
Track screen resolution, viewport bounds, and pixel ratios in real-time.
Simplify resolution dimensions into mathematical aspect ratios (e.g. 16:9).
Calculate display pixel density (PPI) based on size and resolution.
Extract emails, URLs, IPs, and card numbers from raw unstructured text.
Encrypt and decrypt text payload using simple bitwise XOR calculations.
Validate and format raw XML markup structures with indentation.
Format and indent TOML configuration syntax parameters.