Pick the right tool for your needs.
Web Tools
File Type by Content
Shows the file type description along with its size and MIME type.
Uploaded files are processed by your computer/device.
The file type description is based on its content, not extension.
New: JPEG XL, HEIC/HEIF and AVIF files detection added.
IPv4 Ranges
Calculates the network mask and CIDR for subnets of the IPv4 range.
Test Regexp
The regular expression tester tool.
Mouse Events Tracker
Detects mouse left-button misclicks (false double-clicks).
Roman Numerals Converter
See what the Roman numeral XXII is or how to write 197 in Roman numerals.
Floating-point Numbers Representation
Shows representation of the floating-point numbers in binary formats for computer programs.
Floating-point Numbers Summation
Explore the inherent inaccuracies of floating-point number representation, which can lead to unexpected results in calculations and programming tasks.
Speed & Distance
Converts the speed in popular units and shows the time for covering some distances.
Character Code Detector
Identifies spaces and characters that are not part of the Latin alphabet within a text
Console Tools
CRD Reader
A cross-platform console viewer application for reading legacy Windows Contact Card (CRD) files, compatible with both Windows and Linux systems.
The Site Keyboard Navigation
To open the site menu press Ctrl+M, use up and down arrow key to navigate.