ToolvunoFree Online Developer Tools
Small utilities for common development tasks: format JSON, encode values, generate identifiers, convert timestamps and create QR codes. Inputs are handled in the browser for these utilities.
JSON Formatter →Format and validate JSON.URL Encoder & Decoder →Encode or decode URL components.Base64 Encoder & Decoder →Encode and decode Base64 text.UUID Generator →Generate UUID v4 identifiers.URL Slug Generator →Turn a title into a clean URL slug.Unix Timestamp Converter →Convert Unix timestamps and dates.QR Code Generator →Create a downloadable QR code from a URL or text.Color Converter →Convert HEX color values to RGB and HSL.Unit Converter →Convert common units of measurement.
Choosing the right tool
These utilities are designed for common debugging and formatting tasks. Do not paste secrets, API keys or confidential data into any online tool unless you understand its implementation and trust its handling of data.
Privacy and processing
Many text and developer utilities run entirely in your browser. File tools also use local browser processing where implemented; check the individual tool page for supported inputs and its specific behavior. Do not upload confidential information unless you are comfortable with the way the tool works.