Back to Tools
Utilities
Source Code Viewer
Paste source code and view it with stable line numbers for review or sharing.
Source52 chars
Numbered View70 chars
About Source Code Viewer
Add stable line numbers to source code snippets for review, sharing, tutorials, and issue reports.
Common Use Cases
- Code review notes
- Bug reports
- Tutorial snippets
- Documentation examples
Tips
- Line numbers are generated locally
- Copy the output for comments
- Use it with any programming language
Frequently Asked Questions
Is this tool private?
Yes. The conversion runs in your browser, and your input is not uploaded to a server.
Can I copy the result?
Yes. Use the Copy Output button in the sidebar, or select the output field manually.
Does it work offline?
Once the page has loaded, the core transformation logic runs client-side without an API call.
What should I do with edge cases?
Use this for fast checks and formatting. For production-critical data, verify the result with the target runtime or standard.