Explore Developer tools
Use formatters to inspect data, encoders to transform text and color converters to prepare design values. Validate output before using it in production.
JSON Minifier ↗
Validate JSON and remove unnecessary whitespace.
DeveloperHTML Entity Encoder ↗
Encode special HTML characters safely.
DeveloperHTML Entity Decoder ↗
Decode common HTML entities into text.
DeveloperBinary to Text ↗
Decode UTF-8 bytes represented as binary.
DeveloperText to Binary ↗
Convert text to UTF-8 binary bytes.
DeveloperJSON Formatter ↗
Validate and format JSON with helpful errors.
DeveloperBase64 Encoder ↗
Encode Unicode text safely to Base64.
DeveloperBase64 Decoder ↗
Decode Base64 text back to readable Unicode.
DeveloperURL Encoder ↗
Encode special characters for URL components.
DeveloperURL Decoder ↗
Decode URL-encoded strings.
DeveloperUUID Generator ↗
Generate random version 4 UUID identifiers.
DeveloperHEX to RGB Converter ↗
Convert six-digit hexadecimal color codes into RGB values.
DeveloperRGB to HEX Converter ↗
Convert RGB color channels into a hexadecimal color code.
How to choose a developer tool
Use formatters to inspect data, encoders to transform text and color converters to prepare design values. Validate output before using it in production.
Common uses
Debugging, web development, API testing and frontend design.
Frequently asked questions
Do I need an account?
No. The current public ToolNest utilities are available without signing up.
Where can I learn more?
Each tool includes instructions. Visit our blog for additional guides, or browse all online tools.