Developer
Developer utilities for JSON, URLs, Base64, and payload debugging.
Debug routine web data formats in a focused workspace that does not require pasting payloads into a remote API.
Common developer tasks you can finish instantly
- •Format, validate, minify, and sort JSON.
- •Encode or decode URLs and query strings.
- •Encode text to Base64 or decode Base64 payloads.
When to use each tool
Inspecting raw API responses
When an endpoint returns a minified JSON block and you need to quickly format it with indentation to read the structure.
Debugging query parameters
When a URL contains complex encoded characters (%20, %3D) and you need to see the exact values being passed to the server.
Preparing payload data
When you need to encode local strings into Base64 to safely embed them in headers or configurations.
Tools in this collection
26 developer tools ready to use
Pro Tip: Combine tools for a faster workflow
You can chain these tools together to handle complex tasks. For example:Add JPG receipts → Convert to PDF → Merge with a cover letter PDF → Download one final file.
Frequently Asked Questions
Is it safe to paste real API data?
Yes. Our developer tools like the JSON Formatter and Base64 Encoder process your strings locally. The payloads never leave your browser.
Will the JSON Formatter fix invalid JSON?
It includes a validator that will pinpoint exactly where the syntax error is (like a missing comma or quote) so you can fix it.