Presigned URL for File Upload

With a presigned URL, you can securely upload files from any site without authentication!

Create a temporary link with a custom path.

METHOD: GET

# expirationIn - value in seconds
/v1/sign/SECRET_CLIENT_TOKEN/CUSTOM_PATH_FOLDER?expirationIn=3600

You will receive a link. Use the PUT method to send a file to this link, and it will be uploaded to your bucket without an authorization key.

// The path is encrypted in the link. Any modification to the link will result in a failed upload.
// Therefore, it is safe to share with third parties.

Example of a presigned URL:
https://api.defaultuploader.com/v1/upload/sign/huFtjXfdtfU8kzRB4roo2M  \
/4261209739480817x-params7cdc34f921f1a8703c979dc0224b3a83x-token62bb1d \
46ad31e402f4238a0ec4054a615bec5727dee08070bd9c2bbeb3f7c960dc0131eeefa9 \
1b5a2db01f40e86da32c706262cf87b48727c885f776efa4a80b/dfdfdf.sddsfdsfs/ \
dsfs.fdsf?expirationIn=3600

Simplified Integration Option

You don’t need to handle file transfers through your backend service.

The scenario would look like this:

• When your client wants to upload a file, they request a link from your backend.
• Your backend requests a presigned URL with a 1-minute timeout (?expirationIn=3600) and a specific path — clientid/folder — from the Default Uploader service.
• Your backend then provides the link to the client, who uploads the file to your bucket using that link in the specified folder.

You can generate as many presigned URLs as you need

But there are some limitations:

• Maximum duration: 604800 seconds (1 week)
• Rate limit: 1000 links per hour (can be increased upon request)
• Maximum URL length: 300 characters