Load custom .srt and .ass subtitle files for YouTube videos

Latest Version

Version
1.1.8
Update
December 17, 2024
Size
20.01KiB
Developer
Category
Users
0
Rating
0 ★
Manifest Version
3
Web Store Status
Languages Support
English (United States)
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Permissions
ActiveTab
Storage
Tabs
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YouTube Custom Subtitles Extension

# YouTube Custom Subtitles Extension

A Chrome browser extension that allows users to load and display custom subtitle files on YouTube videos.

## Key Features

### Subtitle File Support
- Supports .srt subtitle file format
- Supports .ass subtitle file format
- Real-time subtitle loading

### Subtitle Display Customization
- Font size adjustment (100% - 300%)
- Line spacing adjustment (-30px - +30px)
- Subtitle position adjustment (0% - 95%)
- Dual-line subtitle color selection
- Independent top line color setting
- Independent bottom line color setting
- Multiple preset color options: White, Yellow, Green, Cyan, Orange

### Preset Management
- Save current settings as preset
- Load saved presets
- Reset to system defaults

### Smart Video Detection
- Auto-detect YouTube video ID from subtitle filename
- One-click video loading
- Automatic subtitle synchronization

### Last Subtitle Memory
- Remembers the last loaded subtitle
- Quick reload of previous subtitles
- Persistent subtitle settings

### Subtitle Style
- Semi-transparent black background
- Text shadow effect
- Auto-centered alignment
- Click-through functionality (no mouse interference)

## How to Use

1. Click the extension icon to open the control panel
2. Click \"Choose File\" to load your subtitle file
3. Use sliders to adjust subtitle size, spacing, and position
4. Click color blocks to change subtitle colors
5. Save your settings as presets for future use
6. Use \"Load Last Subtitle\" to quickly reload previous subtitles

## Important Notes

- Subtitle files must be UTF-8 encoded
- Subtitle timestamps must sync with video timing
- Extension works only on YouTube website
- Settings are automatically saved in browser local storage
- For automatic video detection, include the YouTube video ID in the subtitle filename (e.g., \"subtitle[dQw4w9WgXcQ].srt\")

## Technical Features

- Real-time subtitle synchronization
- Support for YouTube dynamic page switching
- No interference with YouTube native functions
- Low resource usage
- Real-time subtitle style updates

## System Requirements

- Latest version of Chrome browser
- Active internet connection
- YouTube website access

## Privacy & Permissions

This extension:
- Does not collect any user data
- Works completely offline
- Requires minimal permissions (YouTube access only)
- Does not modify or interfere with other websites

## Support

For issues, suggestions, or contributions, please visit our GitHub repository.

## Version

Current version: 1.1.8
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 3, "name": "YouTube Custom Subtitles", "version": "1.1.8", "description": "Load custom .srt and .ass subtitle files for YouTube videos", "icons": { "48": "icon.png" }, "permissions": [ "activeTab", "storage", "tabs" ], "host_permissions": [ "*://*.youtube.com/*" ], "action": { "default_popup": "popup.html", "default_icon": "icon.png" }, "content_scripts": [ { "matches": ["*://*.youtube.com/*"], "js": ["content.js"], "css": ["subtitles.css"], "run_at": "document_start", "all_frames": true } ], "web_accessible_resources": [{ "resources": ["subtitles.css"], "matches": ["*://*.youtube.com/*"] }]}
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How to download and manually install YouTube Custom Subtitles extension for Chrome

Looking for a way to install YouTube Custom Subtitles extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install YouTube Custom Subtitles extensions manually, this article outlines two simple methods to effortlessly install YouTube Custom Subtitles extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download YouTube Custom Subtitles extension and manually install through Drag &Drop

If you ever need to manually install a YouTube Custom Subtitles extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the YouTube Custom Subtitles Extension by clicking the "Download CRX" button on the website.

Look for the YouTube Custom Subtitles extension you wish to install. Go to the website and download the YouTube Custom Subtitles extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for YouTube Custom Subtitles extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the YouTube Custom Subtitles extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download YouTube Custom Subtitles extension for Chrome and install in Developer Mode

This is another method to install YouTube Custom Subtitles extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the YouTube Custom Subtitles extension file

Select and download the YouTube Custom Subtitles extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the YouTube Custom Subtitles extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your YouTube Custom Subtitles extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the YouTube Custom Subtitles extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install YouTube Custom Subtitles extension in 2 ways. We hope this guide proves helpful.

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