Free Online Code Utility Tools
18 free Code Utility Tools, ready to use with no signup and nothing to install.
Code Utilities (18)
XML Formatter
Pretty-print minified or messy XML.
SQL Formatter
Break a single-line SQL query onto readable, indented lines.
Code Beautifier
Auto-indent minified HTML, CSS, or JavaScript.
Regex Tester
Test a regular expression against a block of text and see every match.
Code Difference Comparison Tool
Compare two blocks of text or code line by line.
REM to PX Converter
Convert between REM and PX using a chosen base font size.
Unix Epoch Time Converter
Convert a Unix timestamp to a date, or a date to a Unix timestamp.
CSS to LESS
Mechanically nest flat CSS selectors into LESS syntax.
Hostname to IP
Resolve a hostname to its IP address.
IP to Hostname
Reverse-resolve an IP address to its hostname.
DNS Lookup
Look up DNS records for a hostname.
ASCII Table
Browse or search the ASCII character table.
IEEE-754 Analysis
Break a number down into its IEEE-754 sign, exponent, and mantissa.
Webcam Test
Check whether your webcam works and see its resolution.
URI Template Parser
Expand an RFC 6570 URI template with variables.
HTML Viewer
Render pasted HTML in a sandboxed preview.
Online Pixel Ruler
Measure anything on your screen in pixels.
Screen Resolution Tester
Preview a web page at four fixed device sizes: mobile, tablet, laptop and desktop.