Read write from disk how to download and read image data?

i want to save the generated image, then i found that read write from disk maybe can achieve, but i no sure how to do that, and i am using the cloud n8n but not local

n8n Cloud cannot read/write from disk

Hi @Jing_Yang
For that, you have to use self-hosted n8n on your local machine. Basically install Docker, get n8n running Install N8N Locally | Qixazow , and create a tunnel to make it live, and by default that node would not show up you have to manually change the setting to enable that node.
Read/Write Files from Disk | n8n Docs

hello @Jing_Yang

In the cloud, you can use external storage providers for that. E.g., Google Drive, AWS S3, or other

@Jing_Yang the simplest path on n8n Cloud is to use the Google Drive node - add it right after your image generation node, set Operation to “Upload” and in the Binary File field map data (your image binary). It uploads directly from n8n’s binary data without any base64 conversion needed. You can also use the S3 node the same way if you have an S3 bucket. After saving, you get back a file URL you can use in later steps.