Developer tools
Encode and decode data, clean HTML, format and validate JSON, convert CSV/YAML/Markdown, test regex, generate hashes and UUIDs and inspect JWTs.
URL encoder
Encode text for safe use inside a URL.
URL decoder
Decode percent-encoded URL text.
Text to Base64
Encode UTF-8 text to Base64.
Base64 to text
Decode a Base64 string to UTF-8 text.
JSON formatter
Validate and pretty-print JSON.
JSON minifier
Remove unnecessary whitespace from valid JSON.
JSON validator
Check whether text contains valid JSON.
UUID generator
Generate random UUID v4 identifiers.
HTML escape
Convert special characters to HTML entities.
HTML unescape
Convert HTML entities back to normal characters.
Password generator
Generate a customizable random password: choose length, uppercase, lowercase, numbers, symbols and extra options.
Clean and format HTML
Paste HTML code to indent and clean it, with options to remove comments, scripts, styles and unsafe attributes.
HTML to plain text
Convert HTML into clean plain text by removing tags, scripts, styles and unnecessary markup.
HTML minifier
Reduce HTML size by removing comments and unnecessary whitespace while preserving pre, textarea, script and style content.
Regex tester
Test a regular expression against text, choose flags and inspect matches, positions and capture groups locally on this device.
Unix timestamp converter
Convert Unix timestamps in seconds or milliseconds to date and time, and convert a local date back to a timestamp.
SHA and MD5 hash generator
Generate MD5, SHA-1, SHA-256, SHA-384 or SHA-512 hashes from text locally on this device.
JWT decoder
Decode a JWT header and payload locally to inspect its contents. This does not verify the signature or prove the token is authentic.
JSON to CSV and CSV to JSON
Convert arrays of JSON objects to CSV and CSV tables to JSON while handling quotes, commas and line breaks.
JSON to YAML and YAML to JSON
Convert JSON to YAML and common YAML to JSON locally on this device with readable, indented output.
Markdown to HTML and HTML to Markdown
Convert Markdown to HTML with a safe preview and turn basic HTML back into Markdown locally on this device.
SEO title and meta description length checker
SEO title and meta description length checker. A free, quick utility for this task with no sign-up and an instant result.