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How to Add Subtitles to Videos Online & Offline? [Effective Methods]

Updated on May 7, 2025

Adding subtitles to videos is necessary for someone to better understand the video content. This article shares two simple methods to insert subtitles into videos online and offline. Keep reading to learn the detailed guide.

Tips. Get this desktop tool to get more features than just adding subtitles to videos.

https://www.videoconverterfactory.com/download/hd-video-converter-pro.exe hd-video-converter-pro.exe

Method One - Embed Captions to Any Video with WonderFox HD Video Converter Factory Pro

Method Two - Add Subtitles to the Video Online

Conclusion

Embed Captions to Any Video with WonderFox HD Video Converter Factory Pro

Here’s one simple and fast way to deal with how to add subtitles to a video. You just need to install a professional program to help you – WonderFox HD Video Converter Factory Pro enables you to insert subtitles to video permanently with ease. With the powerful format supports, it allows you to add subtitles to almost all video files without format incompatibility issue. Moreover, you can also change video formats to play videos on any device and player smoothly. It can also extract subtitles from any movie. Just download this program below and follow the guide to learn the easiest way to add subtitles to a video now!

Add Subtitle to the Local Video or the One Downloaded Online with Four Steps

At first, please free download free download the software and follow the steps to add captions to video.

Step 1. Download a Video Online to Add Subtitles

This step is for those who want to download videos from YouTube or other video-sharing sites. This software will make short work of downloading online videos. Press the Downloader module > Open the New Download window > Paste URL to the blank box > click "Analyze" > Select Output Format > Press "Download All" to start downloading the video.

If you already have a video to be subtitled, skip it, and proceed to step 2.

Step 2. Load Your Video and subtitle file

Exit the Downloader module and open the Converter interface, then click +Add Files to load the target videos or drag and drop them to the software.

Next, click the "+" (Add subtitle) button to browser and load local .ass and .srt subtitle files into the software.

Step 3. Add Subtitles to Video

Now, click the "Subtitle settings" button next to the "+" button and select the subtitle type as you need. At last, click the "Run" button to begin the process of adding subtitles to video. Before it, you may specify the output folder and output format/device. In the same way, you can also add subtitle to MP4, AVI, MOV, MKV and more formats.

Now the subtitles have been successfully added to your video as you wish. This amazing software to add subtitle to video is perfectly compatible with your Windows PC.

Method Two: Add Subtitles to Video Online

Also, there are some people who prefer to add subtitles online. So here I will list some welcomed online subtitle adders for you.

Insert Caption with ezgif.com

1: ezgif.com/video-subtitles

It allows you to add subtitle to online videos and local videos. Steps: load local videos or paste the video URL then press "Upload File" > select .srt file to upload > click the "Add Subtitles" button > after that, download the video with subtitle. Moreover, you can make your own subtitle for the video by this site.

Cons: You can only upload files in MP4, AVI, WebM, MOV and more with the max file size of 100MB. Besides, add subtitles to video online with this site will be a time-consuming process: when you upload a local video or paste an online video URL, or load a .srt file, it will take so much time. So if you want to add subtitle to video online by this one, you must be patient.

Take substital.com to Embed Subtitle Online

2: substital.com

This is a browser extension that you can add on Chrome and Firefox. You can add subtitles to YouTube videos or videos on Netflix, Dailymotion, Vimeo, and more video-sharing sites with this subtitle adder online.

Cons: Sometimes it can’t detect some videos and you may get difficult to select the video time or set the time for subtitles.

I know that add subtitles to video online freely is more convenient as you don’t need to install any program. However, it will take you too much time when you merge subtitles with video online. Sometimes, you may find that the subtitle is out of sync with the videos. That’s annoying. Comparing the two ways of adding subtitles to video online and offline, taking a great add subtitle to video software would be more powerful as there are no file size and format limits, you can directly add subtitles to video free in the shortest time.

At last...

That's the whole useful information about adding subtitles to video. Feel free to download this handy program to start your job. You can email us if you have any further questions on how to add subtitles to video or how to put captions on video.