Weblate is libre software, web-based, continuous localization system used by over 2500 libre projects and companies in more than 165 countries. Weblate is an open source, web-based, translation tool with version control. It includes several hundred languages with basic definitions, and enables the addition of more language definitions; all definitions can be edited by the web community or a defined set of people, as well as through integrating machine translation such as DeepL, Amazon Translate or Google Translate. In this step by step guide I will show you how to install Weblate on your Synology NAS using Docker & Portainer.

💡Note: This guide works perfectly with the latest version of Weblate 5.9.2

• STEP 1

Please Support My work by Making a Donation.

• STEP 2

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

• STEP 3

Make sure you have a synology.me Wildcard Certificate. Follow my guide to get a Wildcard Certificate. If you already have a synology.me Wildcard certificate, skip this STEP.

• STEP 4

Go to Control Panel / Login Portal / Advanced Tab / click Reverse Proxy. Follow the instructions in the image below.

• STEP 5

Now click the “Create” button. Follow the instructions in the image below.

• STEP 6

After you click the Create button, the window below will open. Follow the instructions in the image below.

On the General area, set the Reverse Proxy Name description: type in Weblate. After that, add the following instructions:

Source:
Protocol: HTTPS
Hostname: weblate.yourname.synology.me
Port: 443

Check Enable HSTS

Destination:
Protocol: HTTP
Hostname: localhost
Port: 18001

• STEP 7

On the Reverse Proxy Rules click the Custom Header tab. Click Create and then, from the drop-down menu, click WebSocket. After you click on WebSocket, two Header Names and two Values will be automatically added. Click Save. Follow the instructions in the image below.

• STEP 8

Go to Control Panel / Network / Connectivity tab/ Check Enable HTTP/2 then click Apply. Follow the instructions in the image below.

• STEP 9

Go to Control Panel / Security / Advanced tab/ Check Enable HTTP Compression then click Apply. Follow the instructions in the image below.

• STEP 10

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

• STEP 11

Now create four new folders inside the weblate folder that you created at STEP 10 and name them cache, data, db, redis. Follow the instructions in the image below.
Note: Be careful to enter only lowercase, not uppercase letters.

• STEP 12

Right click on the weblate folder that you have previously created at STEP 11 then click Properties. Follow the instructions in the image below.

• STEP 13

Go to the Permission tab then click Advanced options. From the drop-down menu choose “Make inherited permissions explicit“. Follow the instructions in the image below.

• STEP 14

Select Everyone then click the Edit tab. Follow the instructions in the image below.

• STEP 15

Check all Read and Write Permissions. Click Done. Follow the instructions in the image below.

• STEP 16

After you click Done on STEP 15, check “Apply to this folder, sub-folders and files“. Click Save. Follow the instructions in the image below.

• STEP 17

Follow my step by step guide on how to activate SMTP for your Gmail account. This step is mandatory. Note: If you don’t want to use the easiest way for SMTP with Google and you already have SMTP details from your own Mail Server, you can just skip this STEP and use your personalized email SMTP details instead.

• STEP 18

Log into Portainer using your username and password. On the left sidebar in Portainer, click on Stacks then + Add stack. Follow the instructions in the image below.

• STEP 19

In the Name field type in weblate. Follow the instructions in the image below.

Note: Copy Paste the code below in the Portainer Stacks Web editor.

version: "3.9"
services:
  redis:
    image: redis:7
    command: [redis-server, --save, '60', '1']
    container_name: Weblate-REDIS
    hostname: weblate-redis
    mem_limit: 512m
    mem_reservation: 256m
    cpu_shares: 768
    security_opt:
      - no-new-privileges:true
    read_only: true
    user: 1026:100
    healthcheck:
      test: ["CMD-SHELL", "redis-cli ping || exit 1"]
    volumes:
      - /volume1/docker/weblate/redis:/data:rw
    environment:
      TZ: Europe/Bucharest
    restart: on-failure:5

  db:
    image: postgres:16
    container_name: Weblate-DB
    hostname: weblate-db
    mem_limit: 512m
    cpu_shares: 768
    security_opt:
      - no-new-privileges:true
    healthcheck:
      test: ["CMD", "pg_isready", "-q", "-d", "weblate", "-U", "weblateuser"]
      timeout: 45s
      interval: 10s
      retries: 10
    volumes:
      - /volume1/docker/weblate/db:/var/lib/postgresql/data:rw
    environment:
      POSTGRES_DB: weblate
      POSTGRES_USER: weblateuser
      POSTGRES_PASSWORD: weblatepass
    restart: on-failure:5

  weblate:
    image: weblate/weblate:latest
    container_name: Weblate
    hostname: weblate
    mem_limit: 6g
    cpu_shares: 1024
    security_opt:
      - no-new-privileges:true
    read_only: false
    ports:
      - 18001:8080
    volumes:
      - /volume1/docker/weblate/data:/app/data:rw
      - /volume1/docker/weblate/cache:/app/cache:rw
    tmpfs:
      - /run
      - /tmp
    environment:
      POSTGRES_HOST: weblate-db
      POSTGRES_PORT: 5432
      POSTGRES_DATABASE: weblate
      POSTGRES_USER: weblateuser
      POSTGRES_PASSWORD: weblatepass
      REDIS_HOST: weblate-redis
      REDIS_PORT: 6379
      WEBLATE_DEBUG: 0
      WEBLATE_LOGLEVEL: INFO
      WEBLATE_SITE_TITLE: Weblate
      WEBLATE_SITE_DOMAIN: weblate.yourname.synology.me
      WEBLATE_ADMIN_NAME: marius
      WEBLATE_ADMIN_EMAIL: yourown@email
      WEBLATE_ADMIN_PASSWORD: mariushosting
      WEBLATE_SERVER_EMAIL: Your-own-gmail-address
      WEBLATE_DEFAULT_FROM_EMAIL: Your-own-gmail-address
      WEBLATE_ALLOWED_HOSTS: '*'
      WEBLATE_REGISTRATION_OPEN: 1
      WEBLATE_EMAIL_HOST: smtp.gmail.com
      WEBLATE_EMAIL_HOST_USER: Your-own-gmail-address
      WEBLATE_EMAIL_HOST_PASSWORD: Your-own-app-password
    restart: on-failure:5
    depends_on:
      redis:
        condition: service_healthy
      db:
        condition: service_healthy

Note: Before you paste the code above in the Web editor area below, change the value numbers for user with your own values. (Follow my step by step guide on how to do this.) 1026 is my personal UID value and 100 is my personal GID value. You have to type in your own values.
Note: Before you paste the code above in the Web editor area below, change the value for TZ. (Select your current Time Zone from this list.)
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_SITE_DOMAIN and type in your own synology.me DDNS without https:// at the beginning that you have previously created at STEP 6.
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_ADMIN_NAME and type in your own name. marius is an example for a name.
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_ADMIN_EMAIL and type in your own email address. You will need to add this email at STEP 23.
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_ADMIN_PASSWORD and type in your own email address. You will need to add this password at STEP 23.
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_SERVER_EMAIL and type in your own Gmail address. Refer to STEP 17.
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_DEFAULT_FROM_EMAIL and type in your own Gmail address. Refer to STEP 17.
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_EMAIL_HOST_USER and type in your own Gmail address. Refer to STEP 17.
Note: Before you paste the code above in the Web editor area below, change the value for WEBLATE_EMAIL_HOST_PASSWORD and type in your own Gmail app password. Refer to STEP 17.

• STEP 20

Scroll down on the page until you see a button named Deploy the stack. Click on it. Follow the instructions in the image below. The installation process can take up to a few minutes. It will depend on your Internet speed connection.

• STEP 21

If everything goes right, you will see the following message at the top right of your screen: “Success Stack successfully deployed“.

• STEP 22

🟢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 23

Now open your browser and type in your HTTPS/SSL certificate like this https://weblate.yourname.synology.me that you have previously created at STEP 6. In my case it’s https://weblate.mariushosting.synology.me If everything goes right, you will see the Weblate login page. At the top right of the page click Sign in, then type in your own email address and password that you have previously created at STEP 19. Click Sign in. Follow the instructions in the image below.

• STEP 24

Your Weblate dashboard at a glance!

Enjoy Weblate!

🆘TROUBLESHOOTING

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

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 Weblate 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 / January 15th, 2025 at 12:31 PM