Published at: 2026-09-17
Image
Overview
The image field collects and manages image data generated during business processes, such as product photos, on-site photos, and ID photos. This field supports watermark photography and OCR text recognition. On mobile devices, it can automatically add location and time watermarks to photos, and use OCR to auto-fill text from images into form fields.
Basic specifications
| Attribute | Description |
|---|---|
| Applicable scenario | Product photos, on-site photos |
| Per-object limit | Up to 20 (expandable via resource packages) |
| Watermark photography | Supported |
| OCR text recognition | Supported |
Configuration highlights
Watermark photography configuration
- Three default preset variables are available: current user, current time, and current address.
- Up to 5 watermark fields. Selected variables cannot be added again.
OCR text recognition configuration
- Purchase a tenant-level OCR recognition API call resource package.
- Create the physical fields that store the recognition results.
- Edit the image field, enable “Enable OCR”, select the recognition card type, and configure the field mapping.
- Go to the object details page (or create/edit page layout) > UI Events > Data Update Events. Use the image field configured with OCR as the trigger field.
- Add a function. Each OCR recognition type has a corresponding template function. After selecting the template, replace the field variables, then save the function and save the layout.
- After front-end users upload an ID card image, the system automatically recognizes and structurally fills the fields.
File count limit
- Image fields support setting maximum and minimum file counts.
File restrictions
- Supported formats: PNG, JPG, JPEG, BMP, TIFF, PNM, WebP
- Image Base64 encoded size must be less than 4 MB, with resolution no higher than 4096×4096
Usage limitations
- Image fields cannot be used as filter conditions for roll-up summary fields or lookup relationship fields.
- When a reference field references an image field, the “Support filtering” option is forced to “No”.