SmartTools

Free online tools for developers, sysadmins and IT professionals. They run in your browser: your data is never sent anywhere.

Tools

Base64 Encode and Decode

Convert text and files to Base64 and back, including the URL safe variant.

HTML Viewer and Formatter

See how an HTML fragment renders, reformat it, and check its structure and nesting.

JSON Formatter

Format, minify and validate JSON right in your browser — nothing is sent to a server.

Unix Timestamp Converter

Convert between Unix timestamps and readable dates, in your own time zone and in UTC.

Secure Password Generator

Generate strong passwords in your browser, with an entropy estimate and nothing transmitted.

SHA Hash Generator

Compute SHA-1, SHA-256, SHA-384 and SHA-512 of any text, without the text leaving your browser.

JWT Decoder

Read the header and payload of a JWT and interpret its timestamps, without the token leaving your browser.

SQL Formatter

Format and minify SQL queries with dialect awareness: SQL Server, MySQL, PostgreSQL, Oracle and SQLite.

Categories

Text

Tools to format, convert and analyse text.

4 tools

Converters

Conversions between data formats and units.

3 tools

Encoding

Encoding, decoding and hashing functions.

4 tools

Network

Network diagnostics, IP addressing and DNS.

1 tool

Generators

Generators for identifiers, passwords and test data.

2 tools

Web

Utilities for web development, HTML, CSS and JavaScript.

1 tool

Labels

Tools for label printing and printer command languages.

1 tool