SnapOtter is a fully self-hosted image manipulation platform that runs 100% locally in a single Docker container. It combines 47 image processing tools, powerful local AI models for background removal, upscaling, photo restoration, and more, plus flexible pipelines for building reusable batch workflows. Everything stays completely private on your hardware with zero cloud dependency, so your images never leave your NAS. It features a clean web UI for quick edits and a full REST API for automation and integration. In this step by step guide I will show you how to install SnapOtter on your UGREEN NAS using Docker and Dockhand.

💡Note: This guide works perfectly with the latest SnapOtter v1.16.0 release.

💡Note: Check out my guide on how to Install SnapOtter on Your Synology NAS.

STEP 1

Please Support My work by Making a Donation.

STEP 2

Install Dockhand using my step by step guide. If you already have Dockhand installed on your UGREEN NAS, skip this STEP. Attention: Make sure you have installed the latest Portainer version.

STEP 3

Go to Files and open the docker folder. Inside the docker folder, create one new folder and name it snapotter. Follow the instructions in the image below.
Note: Be careful to enter only lowercase, not uppercase letters.

STEP 4

⚠️Mandatory: Add Read & Write Permissions to the Docker Folder.

STEP 5

Open your browser and type in http://ugreen-ip-address:3866 to connect to your Dockhand container. On the left sidebar, click Stacks then + Create. Follow the instructions in the image below.

STEP 6

In the Stack name field, type in snapotter. ⚠️Warning: Type in the name in lowercase letters. The installation process can take up to a few seconds/minutes. It will depend on your Internet speed connection. Follow the instructions in the image below.

Note: Copy Paste the code below in the Dockhand Compose Stack then click Create & Start.

services:
  snapotter:
    image: snapotter/snapotter:latest
    container_name: SnapOtter
    ports: 
      - 1349:1349
    volumes:
      - /volume1/docker/snapotter:/data:rw
    environment:
      AUTH_ENABLED: true
      DEFAULT_USERNAME: marius
      DEFAULT_PASSWORD: mariushosting
      STORAGE_MODE: local
    restart: on-failure:5

Note: Before you paste the code above in the Web editor area below, change the value for DEFAULT_USERNAME. Type in your own username. marius is an example for a username.
Note: Before you paste the code above in the Web editor area below, change the value for DEFAULT_PASSWORD. Type in your own password. mariushosting is an example for a password.

STEP 7

If everything goes right, you will see the following message at the bottom right of your screen: “Created stack “snapotter”“.

STEP 8

On the left sidebar, click Containers. Identify your SnapOtter container then click on ports 1349:1349. Follow the instructions in the image below.

STEP 9

🟢Please Support My work by Making a Donation. Almost 99,9% of the people that install something using my guides forget to support my work, or just ignore STEP 1. I’ve been very honest about this aspect of my work since the beginning: I don’t run any ADS, I don’t require subscriptions, paid or otherwise, I don’t collect IPs, emails, and I don’t have any referral links from Amazon or other merchants. I also don’t have any POP-UPs or COOKIES. I have repeatedly been told over the years how much I have contributed to the community. It’s something I love doing and have been honest about my passion since the beginning. But I also Need The Community to Support me Back to be able to continue doing this work.

STEP 10

Type in your own Username (DEFAULT_USERNAME) and Password (DEFAULT_PASSWORD) that you have previously added at STEP 6. Click Login. Follow the instructions in the image below.

STEP 11

Change your password. Type in your current Password then a new Password. Click Change password. Follow the instructions in the image below.