Document URL Sources

For the Document resource url parameter, you can use a publicly accessible URL from the following hosts:

• Temporary File
• Amazon S3
• Cloudflare R2
• Azure Blob Storage
• Dropbox

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Temporary File

You can upload a temporary file to SignatureAPI and use it as a source for the url parameter of a Document resource.

Learn more in the documentation for Create a file.

SignatureAPI Temporary File URLs must match the following format:

https://api.signatureapi.com/v1/files/*

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Amazon S3

You can use either pre-signed (recommended) or publicly accessible URLs.

Amazon S3 URLs must match one of the following formats:

• https://*.s3.*.amazonaws.com/*
• https://*.s3.amazonaws.com/*
• https://s3.amazonaws.com/*

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Cloudflare R2

You can use either pre-signed (recommended) or publicly accessible URLs.

Cloudflare R2 URLs must match the following format:

https://*.r2.dev/*

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Azure Blob Storage

You can use either pre-signed (recommended) or publicly accessible URLs.

Azure Blob Storage URLs must match the following format:

https://*.blob.core.windows.net/*

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Dropbox

Ensure that you can download the file directly from the URL.

Dropbox URLs must match the following format:

https://www.dropbox.com/*