Draw.io (formerly Diagramly) is free online diagram software. You can use it as a flowchart maker, network diagram software, to create UML online, as an ER diagram tool, to design database schema, to build BPMN online, as a circuit diagram maker, and more. draw.io can import .vsdx, Gliffy™ and Lucidchart™ files. The software allows you to choose from an automatic layout function, or create a custom layout. They have a large selection of shapes and hundreds of visual elements to make your diagram or chart one-of-a-kind. In this step by step guide I will show you how to install Draw.io on your Synology NAS using Docker.

💡Note: This guide works perfectly with the latest Draw.io v.27.0.5 release.

💡Note: Check out my new guide on how to Install Draw.io Using Portainer.

💡Note: Check out my new guide on how to Install Draw.io on Your UGREEN NAS.

• STEP 1

Please Support My work by Making a Donation.

• STEP 2

Install Container Manager via Synology “Package Center”. If you run an older DSM version (under 7.2), search for Docker instead of Container Manager.

• STEP 3

Go to Control Panel / Task Scheduler / Create / Scheduled Task / User-defined script. Follow the instructions in the image below.

• STEP 4

Once you click on User-defined script a new window will open. Follow the instructions below:

1. General: In the Task field type in Install Draw.io. Uncheck the “Enabled” option. Select root User.
2. Schedule: Select Run on the following date then select “Do not repeat“.
3. Task Settings: Check “Send run details by email“, add your email then copy paste the code below in the Run command area. After that, click OK.

docker run -d --name=drawio \
-p 5022:8080 \
--restart always \
jgraph/drawio

• STEP 5

After you click OK on STEP 4 a new warning pop up window will open. Click OK.

After you click OK, type in your DSM Password then click Submit. Follow the instructions in the image below.

• STEP 6

After you click Submit on STEP 5, select your “Install Draw” Task then click the “Run” tab. You will be asked to run Install Draw – click OK. Follow the instructions in the image below.

• STEP 7

🟢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 8

The installation process can take up to a few seconds/minutes. It will depend on your Internet speed connection. Now open your browser and type in http://Synology-ip-address:5022 Click Device to save your diagrams. Follow the instructions in the images below.

• STEP 9

Click Create a New Diagram or Open an Existing Diagram. Follow the instructions in the image below.

• STEP 10

Choose your favorite diagram from the list, then click Create. follow the instructions in the image below.

• STEP 11

Your Diagram at a glance!

Enjoy Draw.io!

🆘TROUBLESHOOTING

If you encounter issues by using this container, make sure to check out the Common Docker issues article.

Note: If you want to run the Draw.io container over HTTPS, check How to Run Docker Containers Over HTTPS. In order to make Draw.io work via HTTPS, it’s mandatory to activate WebSocket.

Note: Can I run Docker on my Synology NAS? See the supported models.
Note: How to Back Up Docker Containers on your Synology NAS.
Note: Find out how to update the Draw.io container with the latest image.
Note: How to Free Disk Space on Your NAS if You Run Docker.
Note: How to Schedule Start & Stop For Docker Containers.
Note: How to Activate Email Notifications.
Note: How to Add Access Control Profile on Your NAS.
Note: How to Change Docker Containers Restart Policy.
Note: How to Use Docker Containers With VPN.
Note: Convert Docker Run Into Docker Compose.
Note: How to Clean Docker.
Note: How to Clean Docker Automatically.
Note: Best Practices When Using Docker and DDNS.
Note: Some Docker Containers Need WebSocket.
Note: Find out the Best NAS Models For Docker.
Note: Activate Gmail SMTP For Docker Containers.

This post was updated on Wednesday / May 21st, 2025 at 2:46 PM