debugtools / answers
Developer tool answers
Short, source-friendly answers for common debugging, formatting, and inspection workflows.
What is the best free JSON formatter for developers?
The best free JSON formatter validates syntax, formats nested payloads clearly, and keeps sensitive JSON local to your browser when possible.
How do I decode a JWT safely?
Decode JWTs in a local browser tool, review claims such as exp, iss, aud, and sub, and verify signatures separately when authenticity matters.
What is the difference between Base64 encoding and decoding?
Base64 encoding converts bytes or text into an ASCII-safe representation. Decoding converts that Base64 text back into the original bytes or string.
How can I test an API request online?
Use an API tester to choose the method, enter the URL, add headers or auth, send the request, and inspect status, response headers, and body.
How do I compare two code snippets?
Paste the old snippet and new snippet into a diff tool, then review added, removed, and changed lines side by side.
How do I generate a hash for text?
Paste text into a hash generator, choose the algorithm you need, and compare the generated digest with the expected checksum.
How do I decode a URL query string?
Use a URL decoder to convert percent-encoded characters back to readable text, then inspect each query parameter separately.
How do I check what an HTTP status code means?
Search the status code, confirm its category, then use the meaning to decide whether the issue is client-side, server-side, redirect-related, or informational.
How should I use an AI debug assistant safely?
Use an AI debug assistant for non-sensitive errors, stack traces, API responses, and JSON issues, but remove secrets and private data before sending text to any configured AI provider.