Free utilities for developers, marketers, designers, email administrators, security teams, and business owners.
Generate secure credentials and inspect security-related data.
Generate cryptographically secure random passwords locally in your session.
Decode and inspect JWT headers, payloads, signatures, and registered claims.
Generate cryptographically secure URL-safe IDs, ULIDs, hexadecimal IDs, and more.
Generate secure random API keys and application secrets.
Encoding, formatting, conversion, and identifier utilities for software development.
Encode UTF-8 text to Base64 or decode Base64 back into readable text.
Convert UTF-8 text to binary byte representation and back.
Beautify, minify, and validate JSON using strict parsing.
Convert XML documents into JSON data.
Convert SVG markup into CSS-compatible data URI output.
Generate version-4 GUID / UUID identifiers in common formats.
Utilities for HTML, CSS, URLs, robots directives, and site infrastructure.
Minify CSS for production or beautify compressed stylesheets.
Minify HTML markup or reformat compressed HTML for readability.
Encode HTML character references or decode entities back into text.
Create clean, search-friendly URL slugs from text.
Generate robots.txt directives for search-engine crawlers.
Inspect and validate XML sitemap content.
Generate and inspect common email authentication and transport-security records.
Generate SPF DNS records for authorized email senders.
Generate DKIM signing keys and the corresponding DNS record.
Build DMARC policies and reporting settings.
Analyze email content for characteristics commonly associated with spam filtering.
Generate BIMI DNS records for supported brand-logo deployments.
Generate RFC 8461 MTA-STS policies and their DNS TXT records.
QR code, campaign tracking, and local-search utilities for marketers.
Generate a QR code containing plain text.
Generate a QR code that opens a URL.
Generate a QR code for Wi-Fi network connection details.
Generate a QR code containing vCard contact information.
Build campaign URLs containing standard UTM tracking parameters.
Check local Google ranking visibility across a 5 × 5 geographic search grid.
Create, transform, and prepare image assets for websites and development.
Quick conversion utilities for common measurement units.
Tools for evaluating visual accessibility and color presentation.
Reference utilities for countries, regions, and global time zones.
Utilities intended for development and payment-system testing.