To translate Japanese from an image online, you can use an Optical Character Recognition (OCR) tool and a translation tool.

Use an OCR tool: There are several online OCR tools available, such as Google Drive's OCR feature, Microsoft's OneNote OCR feature, or online OCR tools like Online OCR or ABBYY FineReader Online. Upload the image to the OCR tool and wait for it to recognize the text in the image.

Copy the text: After the OCR tool has recognized the text, copy the Japanese text that you want to translate.

Use a translation tool: There are several online translation tools available, such as Google Translate, DeepL, or Bing Translator. Paste the Japanese text into the translation tool and select the target language, such as English, to receive the translation.

However, keep in mind that machine translations may not always be accurate and may require human review or editing to ensure that the translation is correct. Additionally, the quality of the OCR tool's recognition may also affect the accuracy of the translation.