How to Add Custom Subtitles to Netflix

Published by Nyau Wai Hoe - Updated on

If you love movies from around the world or like to watch shows in less common languages like Arabic, Thai, Japanese, Sinhala, Czech, Bulgarian, and more, you might have run into a problem on Netflix – they might not have subtitles in the language you need. While Netflix has a bunch of subtitles in popular languages, finding ones for more unique dialects can be tough.

But don’t worry, there’s a way to add your own subtitles to any Netflix movie or series. This guide will show you how to do it step by step using a cool Chrome extension called Substital. Now you can watch your favorite Netflix shows with the subtitles you prefer.

How to Add Custom Subtitles to Netflix

How to add your own custom subtitles to a Netflix movie or series

Here’s how to add custom subtitles to any Netflix video using a Chrome extension called Substital. Remember, you need to use Chrome to watch Netflix for this to work. Let’s jump in.

Also see: How to Watch Netflix with Dual Subtitles

Step 1: Installing Substital

First things first, we need to get Substital, the Chrome extension, onto your computer. Here’s how:

  1. Make sure you have Google Chrome. Since Substital works only on Chrome, it won’t work if you’re using another browser.
  2. Head over to the Chrome Web Store. Just type chrome://extensions/ in your Chrome’s address bar and press Enter. Then, look for a link that says “Open Chrome Web Store” and click it.Open Chrome Web Store
  3. Look for Substital in the search bar. Just type in “Substital” and hit Enter to find it.Substital extension
  4. Click on Substital in the results to open its page. Then click “Add to Chrome” and “Add extension” when the pop-up comes up.Add subtitles to Netflix Chrome Extension
  5. Wait a bit for Chrome to install the extension. You’ll see the Substital icon in the top-right corner of Chrome. If you don’t see it, click on the puzzle icon to find it and pin Substital for easy access.Pin Chrome extension

Useful tip: How to Download Subtitles in VLC on Windows 11

Step 2: Enabling Substital on Chrome

With Substital installed, let’s turn it on and get it ready for Netflix:

  1. Open Netflix on Chrome and sign in if you need to.
  2. Pick a movie or series you want to watch. Substital works with both.Open Netflix Android iOS or PC
  3. Click the Substital icon in Chrome, it looks like a blue “S” inside a film reel.
  4. In Substital, find your Netflix video and select it.Select a Netflix movie to add subtitles
  5. To add subtitles, click “Language” to pick your subtitle language. You can find lots of languages, even the rare ones. Use the search bar to find your video and download the subtitles from there.How to add Arabic subtitles to Netflix

Related resource: How to Add Subtitles to Video in Windows 11

Step 3: Adding custom subtitles

Now that Substital is ready, here’s how to add your own subtitles:

  1. Get a subtitle file in the language you want. You can find these files online.
  2. Go back to Netflix and pick something to watch.
  3. Click the Substital icon again.
  4. Choose the video you’re watching in Substital.
  5. Drag and drop your subtitle file where it says “Drop your subtitles file here to load it” or click “Upload your own subtitles file” to find it on your computer.How to add subtitles to Netflix
  6. Play your movie or series on Netflix. Substital will show your subtitles on top of the video.Add your own subtitles to Netflix movies
  7. You can change how the subtitles look by clicking the “S” icon next to them. Adjust things like font size and color to make sure you’re comfortable.Adjust subtitles size background color and transparent on Netflix

Handy guide: Convert SRT to 3D Subtitles and Add them to 3D Movies

Step 4 (Optional): Adjusting the synchronization (delay or speed up) of the subtitles

If your subtitles are not in sync with the video, you can fix the timing like this:

  1. Load your custom subtitles onto a Netflix video as before.
  2. To adjust the timing, click the “S” icon next to the subtitle. Then, use the slider to delay or speed up the subtitles.Delay or speed up subtitles on Netflix

The bottom line

Adding custom subtitles to Netflix with Substital opens up a whole new world for fans of international cinema and language learners. With this Chrome extension, you can enjoy Netflix shows in languages Netflix might not offer. Follow these steps, and you’re all set for a more inclusive and fun Netflix watching experience.

Nyau Wai Hoe
Nyau Wai Hoe is the Founder and Chief Editor of With a degree in software engineering and over 12 years of experience in the tech support industry, Nyau has established himself as an expert in the field, with a primary focus on the Microsoft Windows operating system. As a tech enthusiast, he loves exploring new technologies and leveraging them to solve real-life problems.

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