This MIME type signals to the CDN to compress the file. The default MIME type 'application/octet-stream' will not be compressed by default.
// b2_upload_file
const file = DriveApp.getFileById(FILE_ID);
const fileName = file.getName();
- const mimeType = file.getMimeType();
+ const mimeType = 'text/plain'; // Use 'text/plain' to enable compression by CDN. file.getMimeType() gives 'application/octet-stream', which will not be compressed.
const contentLength = file.getSize();
const data = file.getBlob();
const digest = Utilities.computeDigest(Utilities.DigestAlgorithm.SHA_1, data.getBytes());