4 Essential Online Tools for API Developers

Dev
Β·Dante Chun

API development frequently involves checking and transforming data. Whether it's formatting response JSON, decoding JWT tokens, or encoding URL parameters.

You can handle these repetitive tasks quickly and for free at Dante Tools.

1. JSON Formatter - Format and Validate JSON

JSON Formatter

When API responses come compressed in a single line, debugging becomes difficult. JSON Formatter helps you format for readability and validate syntax.

Key Features:

  • Indentation for readable formatting
  • JSON syntax validation
  • Minify function

Use Cases:

  • Understanding data structure when debugging API responses
  • Validating syntax when writing config files
  • Organizing JSON data extracted from logs

Try JSON Formatter β†’

2. JWT Decoder - Decode JWT Tokens

JWT Decoder

When developing authentication systems, you often need to check JWT token contents. Just paste the token to instantly view the Header and Payload.

Key Features:

  • Automatic Header/Payload parsing
  • Expiration time (exp) check
  • Claim information visualization

Use Cases:

  • Checking login token contents
  • Debugging token expiration
  • Verifying role claims

Try JWT Decoder β†’

3. URL Encoder - URL Encoding/Decoding

URL Encoder

When query parameters contain special characters or non-ASCII text, encoding is necessary. URL Encoder helps create safe URLs.

Key Features:

  • URL encoding/decoding
  • Automatic special character conversion
  • Full URL or partial encoding

Use Cases:

  • Encoding API query parameters
  • Handling redirect URLs
  • Passing non-ASCII parameters

Try URL Encoder β†’

4. Base64 - Base64 Encoding/Decoding

Base64

When sending images or files via API, or creating Basic Auth headers, Base64 encoding is required.

Key Features:

  • Text ↔ Base64 conversion
  • File β†’ Base64 conversion
  • Real-time conversion

Use Cases:

  • Creating Basic Authentication headers
  • Encoding image data
  • Transmitting binary data

Try Base64 β†’

Wrap Up

Bookmark these 4 tools and you'll be able to quickly handle data transformation tasks that frequently arise during API development.

All tools are free and available without signup. Check out more developer tools at Dante Tools.

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