JSON, XML, YAML, SQL, regex, hashing, encoding, and the everyday utilities developers reach for — plus password strength and generation.
Generate a Code128, EAN-13, or UPC-A barcode and download it.
Convert text to and from Base64 instantly, both directions.
Convert CSV to JSON or JSON to CSV, handling quoted fields correctly.
Get MD5, SHA-1, SHA-256, and SHA-512 hashes of any text at once.
Pretty-print, minify, and validate JSON with clear error locations.
Write Markdown on the left, see rendered HTML on the right, live.
Create strong random passwords with adjustable length and character sets.
See how strong a password is and get specific ways to improve it.
Create QR codes for links, text, WiFi, email, phone, SMS and contacts. PNG and SVG download.
Scan a QR code with your camera or by uploading an image.
Test a regular expression against sample text with live highlighting.
Pretty-print a messy SQL query with proper line breaks.
Encode or decode URLs and HTML entities, both directions.
Generate one or hundreds of random version-4 UUIDs, in the format you need.
Pretty-print and validate XML with proper indentation.
Convert XML to JSON or JSON to XML instantly.
Convert YAML to JSON or JSON to YAML instantly.
These utilities cover small jobs that come up in programming: formatting and validating JSON, XML and SQL, converting between CSV, JSON, XML and YAML, encoding Base64 and URLs, generating UUIDs and hashes, testing regular expressions, previewing Markdown, creating QR codes and barcodes, and generating or checking passwords.
Because developer data can be sensitive, such as API responses, configuration or tokens, everything runs locally in your browser. Even so, treat real secrets with care: do not paste production passwords or keys into any website you do not control. Remember also that encodings like Base64 are not encryption, and fast hashes like MD5 and SHA-1 should not be used to protect passwords.