Extract File Extension
Pull just the extension out of a filename.
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How it works
- 1
Type or paste a filename
e.g. "photo.final.JPG".
- 2
Extension shown instantly
Everything after the last dot, without it.
- 3
Copy the result
"(no extension)" is shown if the filename has none.
FAQ
- What if the filename has multiple dots?
- Only the part after the last dot is treated as the extension, e.g. "photo.final.jpg" → "jpg".
- What about a dotfile like ".gitignore"?
- A leading dot with nothing before it is not treated as an extension separator, so ".gitignore" has no extension.
- Does this tool upload my filename anywhere?
- No — it runs entirely in your browser.