Scan Base 64 Columns For Corrupted or Missing Content
When the Salesforce REST API returns a record with a BASE64 column the BASE64 data is returned as a hyperlink than can be used to read the raw bytes.
Experience has shown that it is possible for the hyperlink returned by Salesforce to return a HTTP 404 (not found) or an HTTP 500 (internal lightning platform error)
rather than the expected HTTP 200 (OK). When this happens:

This tool tests the hyperlinks returned by the REST API and reports the ID of records where the hyperlink fails (e.g. Does not return a HTTP 200). It is often wise to check each reported record using the Salesforce GUI to make sure that the data is really available. For help on how to use this tool see learn.capstorm.com

WARNING: The link checking process uses 1 REST API call per checked record.