Everything in the catalog

Translates one colour into the other notations: hexadecimal, rgb(), hsl() or a CSS keyword name.

Checks a cron expression and describes the schedule in plain English, with a generator for new expressions.

Converts a date and time into formats such as ISO 8601, UTC, Unix timestamp and a locale string.

Shows details your browser reports about the current device, such as screen size, pixel ratio and user agent.

Rewrites a docker run command line as an equivalent docker-compose YAML file.

Reduces email addresses to a canonical form so duplicates of the same mailbox can be spotted.

Browse and copy emojis and read the Unicode code point for each one.

Estimates when a task will finish from the start time, amount done and amount remaining.

A searchable reference of common git commands for pushing, resetting, rebasing, merging and amending.

Hashes text with MD5, SHA-1, SHA-2, SHA-3 or RIPEMD-160 and shows the digest in several encodings.

Computes an HMAC from a message and secret key using a selectable hash function.

Escapes characters such as < > & and quotes into HTML entities, or unescapes entities back to text.

A rich-text editor that shows the matching HTML source live as you format paragraphs and lists.

A list of HTTP status codes with each name and what it means, grouped by class.

Checks the structure and checksum of an IBAN and splits out the country, BBAN and QR-IBAN status.

Converts an integer between decimal, hexadecimal, binary, octal and other bases.

Shows an IPv4 address as a decimal number, binary, hexadecimal and an IPv6 form.

Takes a start and end IPv4 address and returns a matching subnet with its CIDR notation.

Parses an IPv4 CIDR block and lists netmask, network and broadcast addresses and host range.

Generates a private IPv6 unique local address range following RFC 4193.

Compares two JSON objects and lists the differences between them.

Removes whitespace from JSON to make it as compact as possible.

Reformats compact or messy JSON with indentation so it is readable.

Converts an array of JSON objects to CSV and detects the column headers automatically.