Border Radius Generator input is rejected
The source data may be incomplete, malformed, or different from the format this tool expects.
Check the input hint, try a small sample first, and correct the source file before running the full job.
Use this tool
Prepare the input and run the tool
Enter top-left, top-right, bottom-right, and bottom-left radius. Result: Copy CSS border-radius code.
Ready.
Border-radius CSS appears here.
Data handling: Files and pasted data are processed in this browser session.
Tool guide
How to use Border Radius Generator
Use Border Radius Generator when you need to check, convert, or prepare a file before using it in another app. Review the result before downloading or copying it.
What this tool does
Tune each corner radius, preview the shape, and copy a clean CSS border-radius declaration.
- Input
- Enter top-left, top-right, bottom-right, and bottom-left radius
- Output
- Copy CSS border-radius code
Tool advantages
- Runs in this page; the file or pasted data is not sent to a new app.
- Keeps the preview, report, and download in the same screen.
- Gives you a report you can use as a cleanup list.
Step-by-step usage guide
- 1Adjust corner values.
- 2Preview the shape.
- 3Copy the CSS declaration.
Common errors and fixes
Border Radius Generator result looks incomplete
The preview can only use the rows, files, or fields provided in the current browser session.
Confirm that the full source was pasted or selected, then rerun the tool and review the output before downloading.
Border Radius Generator output needs extra cleanup
Some destination systems have rules that are stricter than a browser-local utility can infer.
Use the report as a cleanup checklist and verify the final file in the app where it will be imported or shared.
When to use Border Radius Generator
- You are checking files before an upload, import, share, or delivery.
- You want to confirm the result before sending it to another system.
- You need a copied result, downloaded file, or report that can be reviewed outside the page.
FAQ
Can each corner be different?
Yes. Enter a separate pixel value for each corner.
Does it export CSS?
Yes. It outputs a border-radius declaration.