Use optical character recognition to read images
Optical character recognition (OCR) is a technology that extracts text from images. It scans GIF, JPG, PNG, and TIFF images. If you turn it on, the extracted text is then subject to any content compliance or objectionable content rules you set up for Gmail messages.
For example, say you configured your content compliance setting so that messages with credit card numbers are moved to quarantine. A customer sends you a message with a PNG image attachment of an invoice that contains a credit card number. If you turn on OCR, Gmail converts the image attachment to text, detects the credit card number, and moves the message to quarantine.
Note: OCR doesn’t scan images embedded in attached files, such as Adobe® PDF or Microsoft® Word® documents. And, it's not always 100% accurate. Sometimes, it doesn’t detect content that triggers a compliance setting action.
Turn OCR on or off
From the Admin console Home page, go to AppsG SuiteGmailAdvanced settings.
Tip: To see Advanced settings, scroll to the bottom of the Gmail page.
Note: Depending on the version of G Suite you're using, these settings might be located in: Apps > G Suite > Gmail > Compliance.
- (Optional) On the left, select an organization.
- Scroll to the the Optical Character Recognition (OCR) setting.
- Check or uncheck the Enable OCR for email attachments box to turn OCR on or off.