Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized. Your data is your data alone and you deserve to choose where it is stored, if it is shared with some third party and how it’s transmitted over the Internet. In this step by step guide I will show you how to install Syncthing on your Synology NAS using Docker.

💡Note: This guide works perfectly with the latest Syncthing v1.29.5 release.

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

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

• STEP 4

Now create three new folders inside the syncthing folder that you have previously created at STEP 3 and name them config, data1, data2. Follow the instructions in the image below.
Note: Be careful to enter only lowercase, not uppercase letters.

• STEP 5

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

• STEP 6

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 Syncthing. Uncheck “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=syncthing \
-p 8384:8384 \
-p 22000:22000/tcp \
-p 22000:22000/udp \
-p 21027:21027/udp \
-e PUID=1026 \
-e PGID=100 \
-e TZ=Europe/Bucharest \
-v /volume1/docker/syncthing/config:/config \
-v /volume1/docker/syncthing/data1:/data1 \
-v /volume1/docker/syncthing/data2:/data2 \
--restart always \
ghcr.io/linuxserver/syncthing

Note: Before you paste the code above in the Run command area below, change the value numbers for PUID and PGID with your own values. (Follow my step by step guide on how to do this.)
Note: Before you paste the code above in the Run command area below, change the value for TZ (Select your current Time Zone from this list).
Note: If you want, you can change the following line /volume1/docker/syncthing/data1 with the path Location of your data folder on your NAS. Also, remember to change :/data1 with the same folder name of your data folder name.
Note: If you want, you can change the following line /volume1/docker/syncthing/data2 with the path Location of another data folder on your NAS. Also, remember to change :/data2 with the same folder name of your data folder name.

• STEP 7

After you click OK on STEP 6 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 8

After you click Submit on STEP 7, select your “Install Syncthing” Task then click the “Run” tab. You will be asked to run Install Syncthing – click OK. 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

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:8384 Click No to disallow anonymous usage reporting. Follow the instructions in the image below.

• STEP 11

Click Settings. Follow the instructions in the image below.

• STEP 12

Click the GUI tab. Type in your own Username and Password. Select Dark for Dark mode. Click Save. Follow the instructions in the image below.

• STEP 13

You will be prompted to log in using your Username and Password that you have previously chosen at STEP 12. Click Log In. Follow the instructions in the image below.

• STEP 14

Click + Add Folder. Follow the instructions in the image below.

• STEP 15

In the Folder label area, type in your folder name. In the folder ID area, type in your folder name. In the Folder Path area, type in your folder name with a slash / in front. Click Save. Follow the instructions in the image below.

• STEP 16

At the top right of the page, click Actions then Show ID. Follow the instructions in the image below.

• STEP 17

Your device identification at a glance!

Enjoy Syncthing!

🆘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 Syncthing container over HTTPS, check How to Run Docker Containers Over HTTPS. In order to make Syncthing work via HTTPS, it’s mandatory to activate WebSocket.

Note: Find out how to update Syncthing container with the latest image.
Note: How to Back Up Docker Containers on your Synology NAS.
Note: Can I run Docker on my Synology NAS? See the supported models.
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 / April 23rd, 2025 at 10:31 PM