3STF Tools

About 3STF Tools

3STF Tools is a collection of over 110 free, browser-based utilities organized into categories including text and writing, image and file conversion, developer tools, and text style/fun generators. All tools run client-side, with no sign-up required and no data uploaded, tracked, or stored.

The developer category covers utilities such as a JSON formatter, Base64 and URL encoder/decoder, regex tester, CSS and HTML minifiers, Unix timestamp converter, JWT decoder, UUID generator, YAML/JSON converter, text diff checker, chmod calculator, and cron expression generator. Other categories include word and character counters, image format converters (WebP, PNG, JPG) and compressors, and text style generators for Unicode formatting, translators (including fictional/stylized languages like Pig Latin, Medieval, and Gen Z), and random name/gamertag generators.

The site targets developers, writers, creators, and gamers looking for quick single-purpose tools without installation or account creation.

Key features

• 110+ free browser-based tools for developers, writers, creators, and gamers
• 100% client-side processing with no sign-up and no data uploaded or tracked
• Developer utilities like JSON Formatter, Regex Tester, JWT Decoder, and UUID Generator
• Image conversion and compression tools including WebP, PNG, and JPG converters
• Text and writing tools such as Word Counter, Lorem Ipsum Generator, and Text Case Converter
• Fun text style generators and translators like Unicode Text Generator and Fancy Text Translator

Frequently asked questions