Free tools that run in your browser

Format, indent and validate JSON.

Create QR codes for URLs, text or WiFi to download or copy.

Convert between text and 8-bit binary code either way.

Translate text into Morse and Morse back into text, and turn it into audio.

Count the words in a text and get a list of the most common ones, along with the reading time.

Generate random passwords with the length and character types you choose.

Convert between JPG, PNG and WebP in any direction and turn iPhone HEIC photos into JPG, without uploading them anywhere.

Change the size of one image, or up to 50 at once, in pixels or by percentage and without distortion.

Trim audio files by choosing the start and end.

Download the thumbnail of any YouTube video in every resolution.

Record audio with your microphone and download it.

Convert color between HEX, RGB and RGBA either way, with a real-time preview.

Check whether the contrast between two colors meets WCAG AA and AAA levels.

Add or remove transparency from an RGB color, with a real-time preview.

Measure how many clicks per second you can do in tests from 1 to 30 seconds.

Measure your reaction time in milliseconds: click as soon as the screen turns green.

Measure your typing speed in words per minute (WPM) and your accuracy.

See how much your money will grow with compound interest and regular contributions.

Calculate the monthly payment of a loan or mortgage and the total interest.

Work out a percentage of an amount, what percentage one number is of another, and the change between two values.

Work out the fuel cost of a road trip and split it between everyone travelling.