Add Subtitles to Video

Burn subtitles permanently into your video. Upload your video and subtitle file ...

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Updated

Supported Formats

Input Formats

.mp4
.mov
.webm
.avi
.srt
.vtt
.ass

Output Formats

.mp4

Subtitle Features

Add captions to any video

Burned-in subtitles
SRT, VTT, ASS formats
Social media compatible
Accessibility ready
Custom positioning
Adjustable font size
Video quality preserved
No watermarks added
No signup required
Free unlimited use
Fast cloud processing
Universal MP4 output

Why Use Add Subtitles to Video?

Burned-In Captions That Work on Every Platform and Player

Soft subtitles (SRT/VTT sidecar files) depend on the player supporting external subtitle tracks, and most social media platforms strip them out entirely. Burned-in (hardcoded) subtitles are rendered directly into the video's pixel data, which means they display correctly on every device, every platform, and every player regardless of subtitle support. The text becomes part of the image, as permanent as the video itself.

Accessibility for 466 Million People With Hearing Loss

The World Health Organization estimates that over 466 million people worldwide have disabling hearing loss, and that number is projected to reach 700 million by 2050. Burned-in captions make video content accessible to this audience without relying on platform-specific accessibility features. Beyond hearing loss, captions serve the estimated 85 percent of Facebook video viewers who watch with sound off according to Digiday's reporting, a behavior pattern that extends across Instagram, TikTok, and LinkedIn feeds.

Social Platforms Where External Subtitles Simply Do Not Work

Instagram feed posts, TikTok videos, Twitter uploads, and Facebook native videos do not support external SRT or VTT subtitle files. The only way to display captions on these platforms is to burn them directly into the video. According to Verizon Media and Publicis research, captioned video ads on Facebook had 12 percent longer view times than identical ads without captions, a measurable engagement advantage driven entirely by burned-in text.

Quality Preserved

Video quality remains untouched. Subtitles are added as an overlay without recompressing or degrading your video.

Common Use Cases

Captions for every video purpose

Social Media Videos

Add captions for Instagram, TikTok, and Facebook where 85% of users watch without sound. Burned-in subtitles ensure visibility.

Accessibility Compliance

Make your videos accessible to deaf and hard-of-hearing viewers. Essential for inclusive content and legal compliance in some industries.

Multi-Language Content

Reach international audiences by adding translated subtitles. Create separate versions for each language market.

Corporate Training

Add captions to training videos for better comprehension and compliance. Useful in noisy environments or for non-native speakers.

How It Works

1

Upload Your Video

Drag and drop your video file. Support for MP4, MOV, AVI, WebM formats up to 2GB.

2

Upload Subtitle File

Upload your subtitle file in SRT, VTT, or ASS format. Timing must match your video.

3

Customize Appearance

Choose subtitle position (bottom or top) and font size for optimal readability.

4

Download Subtitled Video

Click 'Add Subtitles' and download your video with permanently burned-in captions.

Pro Tips for Subtitles

Check Timing First

Preview your subtitle file with the video before burning. Out-of-sync subtitles can't be fixed after they're burned in.

Keep Text Readable

Use medium or large font size. Keep lines short - 32-42 characters max. Two lines per subtitle is ideal for readability.

Consider Background

White text with black outline works on most backgrounds. If your video has white scenes, test readability first.

Use SRT for Simplicity

SRT is the simplest format. If you just need timed text, SRT works perfectly. Use ASS only if you need advanced styling.

Frequently Asked Questions

We support SRT (SubRip), VTT (WebVTT), and ASS/SSA (SubStation Alpha) formats. SRT is the most common and easiest to create.
Burned-in (hardcoded) subtitles are permanent - they're part of the video image. Soft subtitles are separate files that can be toggled on/off. We create burned-in subtitles.
Social media platforms don't support external subtitle files. Burned-in captions always appear regardless of platform, device, or player settings.
SRT files are simple text files with numbered entries containing timestamps and text. You can create them in any text editor or use subtitle creation software.
Yes, as long as your subtitle file's timestamps match your video. The subtitles appear and disappear according to the timing in your SRT/VTT file.
Yes! Choose between top or bottom positioning and small, medium, or large font sizes. ASS files can include additional styling.
Your subtitle file timestamps must match your video. Use subtitle editing software to adjust timing if they're out of sync before uploading.
This tool adds one subtitle track at a time. For multiple languages, create separate videos with different subtitle files.
No, video quality is preserved. The subtitles are overlaid without re-encoding the video unnecessarily.
Yes. All uploads use SSL encryption, files are processed on isolated servers, and automatically deleted within one hour. We never view or retain your content.

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