行号添加器

How to use this tool

1. Paste your text, URL, metadata, file, or source data into the input area.
2. Choose the mode or options that match your task.
3. Run the tool and review the generated result, score, checklist, or report.
4. Copy or export the output and continue with a related tool if needed.

Why use it

为文本添加行号。

Privacy note: most processing happens directly in your browser, so your inputs are not uploaded unless a tool explicitly needs network access.