Utilidades rápidas y privadas para desarrolladores: formatea, codifica y genera en segundos.
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text, right in your browser.
Convert colors between HEX, RGB and HSL with a live preview.
Convert Unix timestamps to human dates and back — UTC, local, ISO 8601 and relative time. Seconds and milliseconds are auto-detected.
Percent-encode and decode URLs and URL components, UTF-8 safe.
Convert JSON to CSV and CSV back to JSON, both ways. Choose the delimiter, handle quoted fields, and copy the result. Everything runs in your browser.
Convert YAML to JSON and JSON back to YAML, both ways. Validates as it converts and shows clear errors. Everything runs in your browser.
Convert numbers between binary, octal, decimal and hexadecimal. Edit any field and the others update instantly. Large values are exact, with no rounding.
Convert CSV to a Markdown table and Markdown tables back to CSV, both directions.
Decode a JSON Web Token to inspect its header and payload, with human-readable expiry and issue times. Runs entirely in your browser; tokens are never uploaded.
Test a regular expression against your text in real time. See every match highlighted, with capture groups and flags. Runs entirely in your browser.
Build and check cron expressions. Pick a preset or edit the five fields, and see the next run times in your time zone. Runs entirely in your browser.
Format, beautify and validate JSON online with clear error messages for invalid input.
Encode text to Base64 or decode Base64 back to text. UTF-8 safe with automatic direction detection.
Generate 5 random RFC 4122 version 4 UUIDs at once. The input is ignored; run again for a new batch.
Minify and validate JSON in your browser, and see how many bytes you save.
Encode text to HTML entities or decode entities back to text, UTF-8 safe and client-side.
Convert Unix file permissions between checkboxes, octal (like 755) and symbolic notation (like rwxr-xr-x).
See your own IP address and look up the location, ISP and network details of any IP.
Generate SEO and social meta tags (title, description, Open Graph, Twitter Cards) with a live search preview.
Check the contrast ratio between two colours against WCAG AA and AAA accessibility levels.
Format and beautify SQL queries with clause line breaks and consistent keyword casing, or minify them to a single line.
Beautify XML with proper indentation, or minify it to a single line. Comments, CDATA and processing instructions are preserved.
Beautify CSS with clean indentation, or minify it to shrink file size. Handles media queries, calc() and license comments.
Beautify HTML with block-aware indentation, or minify it. The contents of pre, textarea, script and style are preserved.
Beautify and prettify JavaScript with consistent indentation and spacing. Runs entirely in your browser.
Convert CSV to an Excel .xlsx file and Excel back to CSV, entirely in your browser. Works in both directions.
Generate TypeScript interfaces from a JSON sample, with nested types, arrays and optional fields. Runs in your browser.
Convert JSON to XML and XML back to JSON, in both directions, entirely in your browser.
Parse a URL query string into JSON and build a query string from JSON, in your browser.
Create and sign HS256 JSON Web Tokens from a payload and secret, entirely in your browser.
Search and look up HTTP status codes and their meanings, from 1xx to 5xx.
Convert a .env file to JSON and JSON back to .env, in both directions, entirely in your browser.
Generate an HMAC for a message and secret key using SHA-1, SHA-256, SHA-384 or SHA-512, in your browser.
Hash a password with bcrypt and verify a password against a bcrypt hash, entirely in your browser.
Convert a curl command into equivalent JavaScript fetch code, entirely in your browser.
Convert JSON to TOML and TOML back to JSON, in both directions, entirely in your browser.
Convert an image into a Base64 data URI for embedding in HTML, CSS or JSON, entirely in your browser.
Generate a tint and shade scale plus complementary, analogous and triadic colors from a base color.
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