Encode Local File as Data URI
fal_encode_file_as_data_uriEncode a local file as a data URI string to use in fal model fields like image_url without needing to upload the file.
Instructions
Reads a local file and returns it as a base64 data: URI that can be passed directly into fal model arguments (e.g. as an image_url field) wherever a hosted file URL is expected. fal's API accepts base64 data URIs anywhere it accepts a file URL — no separate upload step is required.
This is a local, offline operation — it does not contact fal.ai or any network service.
Args:
file_path (string): Absolute path to a local file (e.g. an image to use in an image-to-image model)
Returns: A data: URI string, e.g. "data:image/png;base64,iVBORw0KG...". Use this string directly as the value of an image_url (or similar) field in fal_run_model / fal_submit_request arguments.
Examples:
Use when: "Use this local screenshot as input for the kontext model" -> encode it, then pass the result as image_url
Don't use when: the file is already hosted at a public URL — just pass that URL directly
Don't use when: the file is very large (>10MB) — large data URIs slow down requests; host the file publicly instead
Error Handling:
Returns "File not found" if the path doesn't exist
Returns "File too large" if the file exceeds 15MB (data URI overhead makes this impractical)
Tool call template
Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.
{
"id": 1,
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"arguments": {
"file_path": "<file_path>"
},
"name": "fal_encode_file_as_data_uri"
}
}Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| file_path | Yes | Absolute path to a local file to encode, e.g. a PNG or JPEG image. |