Flex Input is the easiest way to get your content from where it is to where you need it to be. The Google Workspace extension offers the easiest way to add a signature image to a Google Sheet. Here's how:

1. Install the Flex Input Google Workspace extension from the Google Workspace Add-on Marketplace.

2. Open a Google Sheet, and select the Insert Signature menu option from the Extensions menu.

3. Using your mouse, trackpad or pen, draw the signature you'd like on the signature pad (1). You can adjust the color of the pen and the background using the color pickers. Use the Clear button to wipe the signature pad clean. Once you're done you can click the Insert button (2) to insert the image into the sheet.

4. As an alternative, you can click the Write tab to enter a name and use a handwriting font. You can select the font from a list of fonts, adjust the color of the pen and control the size of the text.

Once Insert is clicked, the signature image will be saved into the currently selected cell.

The signature will be a Google Sheets image: you can use it like any other image, move it into a different cell or copy it.

Thanks for using Flex Input!