Free Developer Tools - Online Encoders, Formatters & Converters
A collection of free online developer tools to help with everyday coding tasks. All tools run in your browser - your data never leaves your device.
Encoding Tools
| Tool | Description |
|---|---|
| Base64 Encoder | Encode text to Base64 format |
| Base64 Decoder | Decode Base64 back to text |
| URL Encoder | Encode special characters in URLs |
| URL Decoder | Decode percent-encoded URLs |
JSON Tools
| Tool | Description |
|---|---|
| JSON Formatter | Format and beautify JSON |
| JSON Validator | Validate JSON syntax |
| JSON Minifier | Compress JSON for production |
| JSON Viewer | Explore JSON with tree view |
Conversion Tools
| Tool | Description |
|---|---|
| JSON to YAML | Convert JSON to YAML format |
| YAML to JSON | Convert YAML to JSON format |
| JSON to CSV | Convert JSON to CSV for Excel |
| CSV to JSON | Convert CSV to JSON format |
Authentication Tools
| Tool | Description |
|---|---|
| JWT Decoder | Decode and inspect JWT tokens |
Why Use These Tools?
✅ 100% Free - No signup, no limits
✅ Privacy First - All processing in your browser
✅ Fast - Instant results, no server round-trips
✅ Mobile Friendly - Works on any device
Developer Guides
Learn the concepts behind the tools: