Development Tools
Access free development tools for coding, debugging, formatting, and testing. Ideal for web developers, programmers, and software engineers.
Development Tools
Development Tools make everyday coding tasks faster and cleaner. Whether you’re building APIs, debugging payloads, preparing test data, or converting formats, these tools help you validate, format, view, edit, and transform developer content instantly — right in your browser.
✅ Why Use Development Tools?
- Debug faster: spot JSON/XML errors instantly instead of hunting through logs.
- Keep code readable: format and beautify messy JSON so teams can review changes quickly.
- Validate with confidence: ensure JSON is valid before sending to APIs or saving to files.
- Convert formats: switch between JSON and XML for integrations and legacy systems.
- Generate test data: create UUIDs and Lorem Ipsum for demos, UI work, and QA.
- No setup: use on any device with no installs, no signups, and no IDE required.
🧰 Tools Included in This Category
Pick a tool based on what you’re working on:
Generators
- UUID Generator — create unique IDs for databases, APIs, sessions, and test payloads.
- Lorem Ipsum Generator — generate placeholder text for UI layouts and prototypes.
JSON Tools
- JSON Viewer — view JSON in a readable tree structure.
- JSON Formatter — format JSON with proper indentation.
- JSON Beautifier — beautify messy JSON to make it human-friendly.
- JSON Validator — check JSON syntax and find errors quickly.
- JSON Editor — edit JSON safely and keep structure correct.
Converters
- JSON to XML — convert JSON data into XML format.
- XML to JSON — convert XML data into JSON format.
🧭 How to Use These Tools
Format / Beautify JSON
- Open JSON Formatter or JSON Beautifier.
- Paste your JSON into the input box.
- Click format/beautify to get clean, readable output.
- Copy the result into your codebase, API client, or documentation.
Validate JSON
- Open JSON Validator.
- Paste your JSON.
- Run validation and review error messages (missing commas, quotes, brackets, etc.).
- Fix issues and re-validate until it passes.
View & Edit JSON
- Open JSON Viewer for a tree view (great for nested data).
- Use JSON Editor if you need to modify values safely.
- Copy the updated JSON when done.
Convert JSON ↔ XML
- Open JSON to XML or XML to JSON.
- Paste the source content.
- Convert and review output structure.
- Adjust naming/arrays if needed for your integration.
Generate UUIDs or Placeholder Text
- Open UUID Generator or Lorem Ipsum Generator.
- Select options (amount, format, length) if available.
- Generate and copy the output for your tests, UI, or docs.
💡 Tips for Better Results
- Validate before formatting: if JSON is invalid, formatting may fail or produce unexpected output.
- Keep consistent indentation: readable payloads make debugging and code reviews easier.
- Watch for encoding issues: smart quotes and hidden characters can break JSON/XML.
- Understand arrays vs objects: format converters may represent repeated XML nodes as arrays.
- Use UUIDs for uniqueness: great for database keys, tracking IDs, and API test records.
- Don’t paste secrets: avoid private keys, passwords, or confidential production data in any online editor.
❓ Questions & Answers
What’s the difference between JSON Formatter and JSON Beautifier?
They are very similar. Both make JSON readable by adding indentation and spacing. “Beautifier” often implies slightly more styling, but the goal is the same: clean, human-friendly JSON.
Why does JSON validation fail even though it “looks right”?
Common causes include missing commas, unquoted keys/strings, trailing commas, or mismatched brackets. Hidden characters (like smart quotes) can also break valid JSON.
When should I use JSON Viewer?
Use it when JSON is deeply nested. A tree view helps you navigate objects and arrays quickly without scrolling through long text.
Is XML to JSON conversion always 1:1?
Not always. XML can represent data in multiple ways (attributes, repeated nodes, mixed content), and converters may choose different JSON structures (arrays/objects). Always verify the output fits your API needs.
What is a UUID and why is it useful?
A UUID is a universally unique identifier. It’s commonly used for database keys, request IDs, correlation IDs in logs, and test data where uniqueness matters.
Is it safe to paste production API data here?
For sensitive systems, avoid pasting secrets or confidential production data. Use these tools for test data, sanitized payloads, and public examples whenever possible.