Convert text and files to Base64 and back, including the URL safe variant.
Compute SHA-1, SHA-256, SHA-384 and SHA-512 of any text, without the text leaving your browser.
Apply and remove percent encoding in URLs, telling a whole address apart from a single parameter value.
Read the header and payload of a JWT and interpret its timestamps, without the token leaving your browser.
See how an HTML fragment renders, reformat it, and check its structure and nesting.
From a CIDR address, derive the network, broadcast, usable range, mask and wildcard.
Format, minify and validate JSON right in your browser — nothing is sent to a server.
Count characters, words, lines, sentences and bytes as you type, with a reading time estimate.
Convert text to upper, lower, camelCase, PascalCase, snake_case, kebab-case and more.
Format and minify SQL queries with dialect awareness: SQL Server, MySQL, PostgreSQL, Oracle and SQLite.
Convert between Unix timestamps and readable dates, in your own time zone and in UTC.
Convert between binary, octal, decimal, hexadecimal and any base from 2 to 36, even for very large numbers.
Convert between web colour notations and check the contrast ratio required for accessibility.
Generate random v4 or time-sortable v7 UUIDs, one at a time or in bulk.
Generate strong passwords in your browser, with an entropy estimate and nothing transmitted.
Preview a ZPL label's layout — positions, text, boxes and rotations — without running a test print.