File uploads

Lasso accepts a variety of file formats as source data for extraction. Upload files first, then reference them by ID when creating a table.

Supported formats

Format	Extensions	Notes
PDF	`.pdf`	Scanned and text-based PDFs are both supported.
Spreadsheets	`.xlsx`, `.xls`, `.csv`	Each sheet or file is parsed for product data.
Images	`.jpg`, `.png`, `.webp`	OCR extracts text from images.
Documents	`.docx`, `.doc`	Word documents are parsed for content.

Upload flow

Upload the file

Send the file as multipart/form-data to POST /v1/files. Maximum size is 1 GB.

Get the file ID

The response includes an id field. Store this for the next step.

Create a table

Pass the file ID in the file_ids array when creating a table.

Example

const file = new File([buffer], "catalog.pdf", { type: "application/pdf" });
const uploaded = await client.files.upload(file, "catalog.pdf");

const table = await client.tables.create({
  schema_id: "schema_abc",
  name: "My Catalog",
  file_ids: [uploaded.id],
});

uploaded = client.files.upload("/path/to/catalog.pdf")

table = client.tables.create(
    schema_id="schema_abc",
    name="My Catalog",
    file_ids=[uploaded["id"]],
)

Alternative sources

If you do not want to upload files, you can also provide:

URLs — Pass file_urls with publicly accessible URLs. Lasso downloads and processes them server-side.
Text — Pass source_text with raw text content for extraction.

Managing files

Files can be listed and deleted through the Files API. Deleting a file does not affect tables that were already created from it.

Getting started

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File uploads

Supported formats

Upload flow

Example

Alternative sources

Managing files

​Supported formats

​Upload flow

​Example

​Alternative sources

​Managing files

Supported formats

Upload flow

Example

Alternative sources

Managing files