Supported Files
File Types
Document AI supports the following image types.
For information about file size and page limits, refer to the Quotas and Limits page.
| Name | File Extension(s) | MIME Type |
|---|---|---|
| Portable Document Format (PDF) | .pdf |
application/pdf |
| Graphics Interchange Format (GIF) | .gif |
image/gif |
| Tag Image File Format (TIFF) | .tiff, .tif |
image/tiff |
| Joint Photographic Experts Group (JPEG) | .jpg, .jpeg |
image/jpeg |
| Portable Network Graphics (PNG) | .png |
image/png |
| Bitmap (BMP) | .bmp |
image/bmp |
| WebP | .webp |
image/webp |
| HyperText Markup Language (HTML) | .html |
text/html |
Note that some of these image formats are "lossy" (for example, JPEG). Reducing file sizes for lossy formats may result in a degradation of image quality and accuracy of results from Document AI.
Document scan resolution
For most accurate OCR results from Document AI, document scans should be a minimum of 200 dpi (dots per inch). 300 dpi and higher generally produce the best results. OCR accuracy is dependent on both the resolution and the minimum font size, along with other factors like document (and if handwritten, handwriting) quality, so testing is recommended. The image quality analysis feature can help evaluate resolution concerns.
NOTE: 2k x 3k pixels are required for the US driver's license back side image in order to read the barcode.