Welcome to FastDevTools

Generate analogous and complementary variants.

Generate secure keys for JWT.

Generate unique identifiers (v4/v5).

Create backgrounds with linear and radial gradients.

Design shadows and copy them as CSS.

Generate layouts with CSS Grid visually.

Format, validate, and minify JSON.

Generate dummy text in seconds.

Generate strong and secure passwords.

Reduce the size of your CSS code.

Convert between px, rem, and em.

Check the contrast between colors.

Count words, characters, sentences, and reading time.

Count characters with and without spaces.

Generate SEO-friendly URL slugs from any text.

Easily remove duplicate lines from a text.