All tools

Validate raw JSON and format it with readable indentation.

Validate JSON and remove whitespace for compact output.

Convert YAML documents into formatted JSON safely in the browser.

Encode Unicode text to Base64 or decode Base64 back to text.

Decode JWT headers and payloads locally without verifying signatures.

Generate one or many v4 UUIDs for development and testing.

Generate SHA-1, SHA-256, and SHA-512 hashes with Web Crypto.

Break URLs into protocol, hostname, path, query parameters, and hash.

Compare two blocks of text with a simple line-by-line diff.

Create URL-safe slugs with hyphen or underscore separators.

Convert text into camelCase, PascalCase, snake_case, and more.

Generate campaign URLs with validated UTM parameters.

Generate title, description, canonical, and OpenGraph meta tags.

Preview social cards and generate matching OpenGraph tags.

Create common robots.txt rules for crawl access and blocked paths.

Remove EXIF and editor metadata by re-encoding images locally.

Resize images locally in the browser with canvas controls.

Combine multiple PDF files into one local browser-generated document.

Extract selected page ranges from a PDF into a new document.

Optimize a PDF with a lossless local rewrite and document metadata cleanup.

Inspect status and response headers for public HTTP and HTTPS URLs.