Powerrename Add Extension To Files Without Extension 〈2026 Edition〉

| File content type | Append | |------------------|---------------| | Plain text | .txt | | JPEG image | .jpg | | HTML document | .html | | PDF document | .pdf |

^[^.]+$

| Task | Regex Search | Replace with | |-----------------------------------------|------------------|--------------| | Select extension-less files | ^[^.]+$ | (no replace) | | Add .txt to those files | ^(.+)$ | $1.txt | | Add .pdf (preview carefully) | ^(.+)$ | $1.pdf | powerrename add extension to files without extension