Decode Base64 to plain text.
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Developer tools
Format JSON, test regex, decode JWTs, and tidy your code.
Format, inspect, then validate
A formatter makes code and data easier to read. A validator helps identify syntax errors, while a decoder lets you inspect an encoded value. Choose the tool that matches your file or language and review the result before using it in a project.
Encode text to Base64 format.
Minify JavaScript, CSS, HTML, and JSON code.
Convert code snippets to beautiful images.
Check WCAG contrast ratios for opaque text and background colours.
Parse and validate cron expressions.
Format and beautify CSS code.
Minify CSS by removing whitespace and comments.
Compare two pieces of text and show differences.
Generate a folder structure for README files from an indented list. Choose tree connectors, then copy or download your directory tree.
Format and indent HTML code.
Decode HTML entities back to characters.
Encode special characters to HTML entities.
Encode or decode HTML entities.
Minify HTML by removing whitespace and comments.
Remove all HTML tags from text.
Format and beautify JavaScript code.
Minify JavaScript code.
Format and beautify JSON with syntax highlighting and validation.
Escape or unescape JSON strings.
Minify JSON by removing whitespace.
Query JSON data using JSONPath expressions.
Validate JSON syntax and display errors.
Decode and inspect JWT tokens.
Generate JWT tokens with custom payload.
Clean Markdown headings, lists, links and blank lines with optional formatting controls. Preserve fenced code blocks and preview the result.
Preview markdown rendered as HTML.
Test and debug regular expressions with highlighting.
Format and beautify SQL queries.
Escape or unescape strings for various languages.
Decode URL-encoded text.
Encode text for use in URLs.
Parse and analyze URL components.
Format and beautify XML code.
Minify XML by removing whitespace.