https://chromewebstore.google.com/detail/upload-image-from-clipboa/eiglgndkjiabiepkliiemoabepkkhacb 이런 익스텐션도 있구나..
chromewebstore.google.com
Upload image from clipboard or URL - Chrome Web Store
Upload images & files directly from a URL or the clipboard (ctrl+v), without needing to have them on your computer!