Free Tools for SEO, Marketing & Web Development

Create and validate robots.txt files for search engines

Interactive color picker with multiple color formats

Convert text between different cases (uppercase, camelCase, etc.)

Generate secure, customizable passwords

Format, validate, and minify JSON

Generate QR codes from text or URLs

Convert between Unix timestamps, ISO dates, and readable formats

Convert between CSV and JSON formats (bidirectional)

Create and validate robots.txt files for search engines

Validate JSON-LD structured data and Schema.org markup

Analyze URLs and HTML for SEO factors

Interactive color picker with multiple color formats

Generate favicons from images in multiple sizes

Compare two text blocks and highlight differences

Convert text between different cases (uppercase, camelCase, etc.)

Generate secure, customizable passwords

Analyze text for word count, readability, and more

Live markdown preview and HTML conversion

Encode/decode HTML entities

Generate URL-friendly slugs from text

Convert between Unix timestamps, ISO dates, and readable formats

Calculate date differences, add/subtract days/weeks/months

Convert dates/times between different timezones

Calculate age from birthdate

Calculate business days between dates (exclude weekends/holidays)

Encode and decode Base64 strings

Format, validate, and minify JSON

Build JSON objects interactively with a visual interface

Generate QR codes from text or URLs

Parse URLs into components and encode/decode

Test and debug regular expressions

Generate placeholder text for design and development

Convert between CSV and JSON formats (bidirectional)

Format and validate XML documents

Generate UUIDs (v1, v4) with copy functionality

Generate MD5, SHA1, SHA256, SHA512 hashes

Decode and validate JWT tokens

Generate random names, emails, addresses for testing