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Add subtitles to video. Easiest subtitling ever.

Create and download subtitles, automatically. Edit, style, trim, and resize videos like a Pro.

Video caption generator. No training or human needed. No need for big budgets or to spend time on training.

Generate open or closed captions for videos automatically, in a matter of seconds. Subly will do the heavy lifting, so you can focus on making subtitle edits and styling your video, ready to share faster with your audience. You wouldn’t share a video without image or sound. So why leave out the text?

Subtitles can help to get the attention of those with sound off, deaf or hard of hearing. Making sure they can understand your content, whilst your engagement soars too.

How to add subtitles to video?

Automatic and accurate subtitle generator. We’ll generate subtitles for you, so you just take care of the finer details and styling in a few clicks.

Increase audience engagement and speed up content production.

Get your video in seconds but also repurpose into VTT, SRT or TXT files so you can use it on different platforms, create blog posts and social media content.
Try Subly Now

Try full features. No credit card required.

Why use subtitle editor?

Automatic subtitles for videos should be a part of every content workflow. But it really doesn't need to take much time or knowledge of video editing tools.

We made it simple so you can get accessible content for anyone with sound turned off, without needing huge budgets or years of training.

Caption video easily

Upload a video, get subtitles burnt in and download in seconds. Our AI will generate the subtitles for you, so you still have control to edit the style and content of your video but don’t have to be delayed by a human.

Add subtitles now
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Try full features for 7 days. No credit card required.

Brand your subtitles

In a few simple steps change the colour, font and position of your subtitles. Once you’ve made the changes once, save your template to use time and time again. Capture more attention and show your brand.

  • Change the font, colour and position of subtitles

  • Add your logo and brand colours

  • Save your style as a template

Brand your video today
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Try full features for 7 days. No credit card required.

Resize for any platform

Facebook, Instagram, YouTube, TikTok, Twitter... resize your video in one click for different social media platforms. No need to use other tools, keep your workflow simple and repurpose for different channels. Help those with sound off to watch your videos in full.

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My team love using Subly to save time and repurpose my YouTube content for different platforms.
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Ali Abdaal
Get videos ready for social
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Try full features for 7 days. No credit card required.

The best creators & teams around the world use Subly

Subtitles really don’t have to be complicated. Subly is fast, easy-to-use and you can try all the features for 7 days for free. Get subtitles added to your video (open captions) or choose different files like SRT or VTT (closed captions) to use alongside with your video. Even repurpose the content from your video into written text with a TXT generated every time you upload a video file or audio file.

Social Media Experts

Share more content online, helping more people to understand the importance of subtitles and accessible content around the world.

Global Marketing & Content Managers

Automate their workflows and get more content out the door faster, with video content that is accessible and on brand.

Content Creators & Production Managers

Maximise content with limited budget and small teams, with automatic subtitles, styling and repurposing in minutes. How content creators repurpose content.

Media Marketing Teams

Save hours of time when adding subtitles to clients’ content, so they can spend more billable time on projects and leave the subtitling to Subly. How marketing teams video translation to grow business globally.

Reach new audiences with content

Want to get started with automatic caption editor for your video? Discover the other tools to pair with the automatic generator to maximise your content. Make your upload, video editing, styling and download simple. Repurpose all the content you’re already using at once, with different file types and languages to really maximise your content and reach new audiences.

Translate to 67 languages

Make your video or audio content accessible to people all over the world.
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  • Generate separate closed caption files for all translated languages.

  • Up to 98% accuracy in speech recognition and it keeps improving with each passing day.

  • Pick between the subtitle mode for easy and accurate time-stamping, and plain text mode for effortless repurposing of your transcript.

Subtitle translator
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Convert audio to video

Get your share of traffic from video-based platforms.
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  • Easily and automatically turn audio files into captivating videos.

  • Grow your follower base by recycling your most engaging content in new formats.

  • Increase traffic, views, and authority by making your content more accessible.

Audio to video
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Convert audio to text

Get more out of your content with speech recognition.
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  • Save hours of content creation work with speech-to-text transcription.

  • Repurpose audio content as social media posts.

  • Get audio transcripts in different formats: TXT, SRT and VTT.

Audio to text
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Why add subtitles to video?

By adding subtitles to your video, you’ll capture the attention of those watching without sound or who are deaf or hard of hearing. On Facebook alone 85% of all video content is watched without sound.

Want to stop the scroll? Add subtitles to make your content accessible to more people. Reach more of your audience and give your content the views it deserves.

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Social channels

Resize your videos with captions for different social platforms. Make your content ready to use on multiple channels instead of just one and increase your reach.

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Internal comms

Reach the whole of your internal team and increase engagement with subtitles that increase the likelihood that your team watches until the end.

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Paid Ads

Increase engagement with your paid efforts by adding subtitles and getting the attention of those scrolling with sound off.

Why users love  Subly captions?

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Try full features for 7 days. No credit card required.

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Captions used to take 2 hours and now it takes 2 minutes. Subly has saved me countless hours.
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Lewis Burgess
Content Creator, Arrow Twelve


What video and audio files does Subly support?

We currently support .mp4 or .mov for video and any audio files. You can even upload your audio file, add an image to it and turn it into a powerful .mp4 file with subtitles. If your file format doesn’t match, you can use a free 3rd party converter. Learn more about our audio to video feature.

How do I download subtitles?

Use Subly editor to download video or audio files with subtitles. Once you've finished editing your video or audio, simply click the download button top right and select the sizes and formats (video, SRT, VTT or TXT) you need. Then click download, your files will download to your device or to Google Drive. Check out out tutorials for more info

How do I export SRT or VTT files in Subly?

When you've finished with your editing you simply hit the download button and select the types of files you'd like to download, including VTT and SRT as options. Learn more about it from our Resources.

What file types can I download to?

You can download subtitled videos and your original video in different aspect ratios. You can also download TXT files, useful for repurposing your audio or video to text. VTT and SRT files are also available if you use other tools for video editing alongside Subly, or need to upload the subtitles separately on social media. Log into your account and click the Download button to see the available file formats.

How do I translate subtitles into another language with Subly?

If you're happy with your transcribed video you can select translation and translate to over 67 languages automatically. Take a look at our subtitle translator page to learn more.

How Do I Merge SRT with MP4 Online?

Use Subly to merge SRT with MP4 online. If you already have an SRT file, you can add this to a video (.MOV or MP4) that you have uploaded to Subly.  

Once uploaded you can edit if needed, or just use it as it is.  Just look for the tool icon in the editor screen to find the option to upload your own SRT file.

Once you download your video, it will have your SRT file burned into it unless you choose a different download option.

How do I edit subtitles?

You can edit subtitles online with the Subly editor. Subly will transcribe your video and generate subtitles automatically. You can leave your automatic subtitles as they are, or you have the options to edit subtitles for the accuracy or even style. You can download closed captions as an SRT or VTT file, or open captions with the subtitles as part of your video.

How do I resize my video for social media?

Upload a video and go to the editor, then select the ‘Size’ tab and choose the size you need. Pick from 16:9, 9:16, 1:1 or 4:5. This will help with all your favourite platforms like YouTube, Facebook, Instagram, Twitter, LinkedIn, TikTok, Snapchat and Pinterest.

Can I add a border to my videos?

Yes you can select fit with border when editing your video to move your subtitles to the border and give the main frame more space. Find this option by logging into your Subly account and exploring your editor features.

How to edit videos faster?

To speed up your editing even more, you can use style templates in Subly to save the colours and styles you usually choose and select in just one click over and over again. Templates are available for Premium and Business features only. Check this and other features plans offer.

How to brand a video?

You can style your subtitles, headlines and add your own brand logo to your video. Open your Subly editor and brand your subtitles in a couple of clicks.

How do you change the timestamp on a video?

You can change the timestamps on your videos in the subtitles editor. You can add, edit and delete timestamps too. Log into your Subly account and open your subtitles editor.

Over 100,000 creators & teams are already doing it.

Cut down the time you spend subtitling and translating videos dramatically.

Start today for free

Try full features for 7 days. No credit card required.

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“We’d love to make a personalised plan that fits your business.”
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Head of Sales and Customer Engagement
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  • Find the right solution for your needs

  • Get an extended trial and your team onboarded

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