Developer Tools

Format, validate, and minify JSON.

Convert CSV to a readable table or to JSON.

Pretty-print and validate XML.

Encode text to Base64 or decode Base64 back to text.

Percent-encode or decode a URL or query string.

Generate MD5, SHA-1, SHA-256, SHA-384, or SHA-512 hashes.

Generate one or many random UUIDs (v4).

Pick a color and get its HEX, RGB, and HSL values.

Paste a JWT token to decode its header and payload, and check its expiry status.

Test a regular expression against a string and see all matches and capture groups highlighted.

Validate JSON syntax, see detailed errors with line numbers, and get stats on valid JSON.

Format and pretty-print SQL queries with dialect-aware indentation.

Convert Markdown text to HTML with a live preview and copyable raw output.

Convert HTML markup to clean Markdown text.

Paste JSON and convert it to YAML format instantly.

Paste YAML and convert it to JSON format instantly.

Convert a JSON array of objects to CSV format.

Parse CSV text and convert it to a JSON array of objects.

Compare two JSON values and highlight the differences.

Escape a string for embedding in JSON, or unescape a JSON-encoded string.

Escape HTML entities or unescape them back to characters.

Break a URL into its components: protocol, host, port, path, query parameters, and hash.

Build cron expressions with a visual form and see a human-readable description.

Generate placeholder lorem ipsum text with options for paragraph count and HTML wrapping.

Upload an image and convert it to a Base64-encoded data: URL.

Parse a browser user agent string into its components: browser, OS, and device type.

Parse XML into a clean JSON object — attributes, nested elements, and text content handled automatically.

Convert a JSON object into a well-formed XML string with optional pretty printing.

Sort all keys in a JSON object alphabetically, with an option for deep recursive sorting.

Validate UUID format, detect the version (v1–v5), and generate random v4 UUIDs.

Generate compact, URL-safe unique IDs with customizable length and alphabet.

Generate collision-resistant CUID-style identifiers with a timestamp component.

Generate Universally Unique Lexicographically Sortable Identifiers (ULIDs) with decoded timestamps.

Convert any text into a clean, URL-safe slug with customizable separator and length.

Paste raw HTTP headers and parse them into a clean, searchable key-value table.

Enter a filename or extension and instantly look up its MIME type, category, and format details.

Write or paste Markdown and see a live rendered preview side by side.

Paste HTML and visualize the heading hierarchy (h1–h6), with warnings for structural issues.

Look up geolocation, ISP, timezone, and network details for any IP address.

Build CSS linear and radial gradients visually.

Query DNS records for any domain — A, AAAA, MX, TXT, CNAME, NS, SOA.

Look up domain registration details — registrar, dates, nameservers.

Check your screen resolution, viewport size, and pixel ratio.

Parse XML and extract repeating elements into a downloadable CSV file.

Convert tab-separated values to properly escaped CSV format.

Upload an image and simulate how it appears under different types of color blindness.