Upload & categorize files with Supabase Storage and secure URL generation

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Supabase Storage File Upload Workflow works with selfhosted Supabase ️ How it works • Accepts file data (MIME type, filename, base64 content) from other workflows • Automatically routes files to a...

Best for

File Management automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.executeworkflowtrigger, n8n-nodes-base.set, n8n-nodes-base.converttofile, n8n-nodes-base.formtrigger, n8n-nodes-base.stickynote, n8n-nodes-base.httprequest

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Jan Willem Altink.

Original n8n.io source

1.1 Workflow description

Title: Upload & categorize files with Supabase Storage and secure URL generation
Workflow name: Upload & categorize files with Supabase Storage and secure URL generation

Supabase Storage File Upload Workflow

works with selfhosted Supabase

ℹ️ How it works

• Accepts file data (MIME type, filename, base64 content) from other workflows • Automatically routes files to appropriate storage buckets based on file type (images, audio, video, documents) • Uploads files to Supabase Storage using the REST API • Generates secure signed URLs for file access with 30-day expiration • Returns structured success/error responses for downstream processing

🏗️ Set up steps

• Configure Supabase API credentials in n8n

• Create storage buckets in your Supabase project (image-files, audio-files, video-files, document-files) (or choose your own structuring system)

• Replace url paths with your own

• Test the workflow using the included form trigger

• Remove test form and integrate with your main workflows

📚 Reference: Supabase Storage Documentation

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - When Executed by Another Workflow

Type / Role: n8n-nodes-base.executeWorkflowTrigger - executeWorkflowTrigger
Config choices: Version 1.1

Block 2 - Prepare Upload Data

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - Success Response

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 4 - Convert to File

Type / Role: n8n-nodes-base.convertToFile - convertToFile
Config choices: Version 1.1

Block 5 - temp form to test workflow

Type / Role: n8n-nodes-base.formTrigger - formTrigger
Config choices: Version 2.2

Block 6 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 7 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 8 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 9 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 10 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 11 - Upload to Supabase Storage

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 12 - Generate Signed Url

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 13 - Upload Error Response

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 14 - add domain

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 15 - Sign Error Response

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

3. Summary Table

Workflow	Upload & categorize files with Supabase Storage and secure URL generation
Complexity	advanced
Nodes	15
Categories	File Management
Author	Jan Willem Altink
Published	13 Jun 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/4920/4920.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source File Management workflows

Frequently asked questions

What does Upload & categorize files with Supabase Storage and secure URL generation do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your File Management use case.

Jan Willem Altink

2 workflows

Nodes

n8n-nodes-base.executeworkflowtrigger n8n-nodes-base.set n8n-nodes-base.converttofile n8n-nodes-base.formtrigger n8n-nodes-base.stickynote n8n-nodes-base.httprequest

Complexity

advanced

Published 13 Jun 2025

Likes 0

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Install path: /data/workflows/4920/4920.json

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Upload & categorize files with Supabase Storage and secure URL generation

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Supabase Storage File Upload Workflow

ℹ️ How it works

🏗️ Set up steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - When Executed by Another Workflow

Block 2 - Prepare Upload Data

Block 3 - Success Response

Block 4 - Convert to File

Block 5 - temp form to test workflow

Block 6 - Sticky Note

Block 7 - Sticky Note1

Block 8 - Sticky Note2

Block 9 - Sticky Note3

Block 10 - Sticky Note4

Block 11 - Upload to Supabase Storage

Block 12 - Generate Signed Url

Block 13 - Upload Error Response

Block 14 - add domain

Block 15 - Sign Error Response

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions