Supported file extensions#
The API supports the following file types:| Document Type | File Extension | MIME Type |
|---|
| Joint Photographics Experts Group | .jpeg | image/jpeg |
| JPG | .jpg | image/jpeg |
| Portable Network Graphics | .png | image/png |
| Portable Pixmap Format | .ppm | image/x-portable-pixmap |
| Tagged Image File Format * | .tiff | image/tiff |
| Portable Document Format | .pdf | application/pdf |
| JPEG 2000 | .jp2 | image/jp2 |
| WEBP | .webp | image/webp |
| Graphics Interchange Format | .gif | image/gif |
| HEIC | .heic | image/heic |
| AVIF | .avif | image/avif |
| JPEG File Interchange Format | .jfif | image/.jfif |
| Portable Gray Map | .pgm | image/x-portable-graymap |
| PAM | .pam | image/x-portable-arbitrarymap |
| PBM | .pbm | image/x-portable-bitmap |
| JXL | .jxl | image/jxl |
| FPX | .fpx | image/vnd.net-fpx |
| BMP | .bmp | image/bmp |
For TIFF files that contain more than one page, extraction will occur only on the first page.
Password-protected PDF files must be accompanied by the respective password, encoded in a base64 string, and sent in the filePassword input parameter.
Characteristics and limitations of image files#
The maximum upload limit for mostValid is 50MB for PDFs and 20MB for image files, with a minimum area limit of 5k pixels or 50 pixels per side.
Files containing more than 50 pages (PDF) will be rejected. For files with more than 5 pages, the asynchronous route should be used to avoid timeout.
Due to the wide variation in quality of capture devices available on smartphones, there are no minimum recommendations in terms of resolution or image size.
To reduce the file size to be sent to mostValid, JPG compression is recommended. We do not recommend image resizing operations, as this operation can compromise quality more than JPG compression.
In some cases, compression with up to 80% loss is acceptable, but there is a significant reduction in image size. Lossy compression can impair reading performance, so very high levels should be used only for very large images.
Images that exceed the upper limit of 9M pixels will be resized (proportionally) to fit within the limit.
