Features
File Uploads
Accept file, image, and video uploads as part of a form submission. Configure size limits, accepted types, and storage settings.
Last updated June 15, 2026
The File Upload field lets customers attach files documents, images, videos to a form submission.
Add a File Upload field
Drag the File Upload field from the Fields panel onto the form canvas. Click it to configure its settings.
Per-field settings
| Setting | Description |
|---|---|
| Accepted File Types | Restrict what can be uploaded. Enter MIME types or extensions (e.g. .pdf, .jpg, .png, video/mp4). Leave blank to allow all file types. |
| Multiple Files | Allow the customer to upload more than one file in a single field. |
| Required | Make the upload required before the form can be submitted. |
Global file settings
Configure default file size limits in Global Settings → Storage & Limits:
| Setting | Description |
|---|---|
| Optimize Images | Automatically compress images on upload to reduce storage usage |
| Max Image Size | Maximum allowed file size for image uploads default: 2 MB |
| Max Video Size | Maximum allowed file size for video uploads default: 5 MB |
Size limits apply globally
The max image and video sizes in Global Settings apply to all forms. Per-field overrides are not available.
Storage limits by plan
| Plan | Storage |
|---|---|
| Starter | 500 MB |
| Basic | 1 GB |
| Pro | 3 GB |
| Pro+ | 10 GB |
When your storage is full, new submissions that include file uploads are blocked until you free up space or upgrade your plan.
Where uploaded files go
- Files are stored securely on the SK Form Builder server.
- They appear in the Response Detail View in the app dashboard when you click a submission.
- They are attached to the admin notification email sent on each submission.
- Storage usage is tracked and displayed in Global Settings → Storage.
Accepted file type examples
# Images only
.jpg, .jpeg, .png, .gif, .webp
# Documents only
.pdf, .doc, .docx, .xls, .xlsx
# Videos
video/mp4, video/quicktime
# Mixed
.pdf, .jpg, .png, video/mp4Use the Accepted File Types setting on the field to limit uploads to only what your form actually needs. This prevents customers from accidentally uploading unsupported files and keeps your storage cleaner.
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