Can viewers turn burned-in captions off?

No, they are part of the picture.

Do I need my own subtitles?

Yes. Bring your own SRT, VTT or ASS file, written by hand or exported from your editor.

Which languages work?

Any language the Inter font covers, including Latin, Cyrillic and Greek scripts.

Can I change the font?

The bundled Inter font is used for consistent results; ASS files can set size and colour.

Can I burn two languages?

Combine both into one subtitle file with two lines per cue, then burn it in.

Can I burn subtitles on a phone?

Yes, for short clips. Burning in re-encodes the picture, so long or 4K videos are better done on a laptop.

Why do accents look wrong in the burned captions?

Save the subtitle file as UTF-8 and burn again; legacy encodings garble accented letters.

100% free · runs in your browser · no upload · no signup

Burn Subtitles into a Video

Drop a file here

Click to browse, or paste a file from the clipboard.

Choose file

Burning in (hard-coding) draws the subtitles into the picture so they show on every platform, even ones that don't support caption files. Videozify does it in your browser with your own SRT, VTT, ASS or SBV file and a choice of caption styles.

How to use burn subtitles

Drop the video onto the box above.
Choose your subtitle file and a caption style.
Press Burn in subtitles.
Preview and download the MP4.

How burn subtitles works

Most social feeds autoplay muted. Burned-in captions keep viewers watching and make the clip accessible without relying on each app's caption support.

Rendering uses libass inside FFmpeg.wasm with the open-source Inter font bundled, so captions look the same on every device.

Burned-in text can't be turned off or edited later, so keep your SRT.

Hard-coded captions are the right choice when a platform ignores caption files or when you want a consistent look everywhere: Instagram Reels, TikTok, WhatsApp, LinkedIn and presentations all play burned-in text exactly as you rendered it. Soft subtitles (a separate SRT) are better for long-form video sites or a course platform, where viewers can switch them off or pick a language.

Rendering uses libass, the same subtitle renderer media players use, running inside FFmpeg.wasm. The video picture is re-encoded once with H.264 at a quality that is visually close to the source, while the audio track is copied untouched, so sound quality never changes.

Everything runs on your device. Need a different subtitle format first? See also the subtitle converter.

At a glance

Property	Videozify
Subtitle input	SRT, VTT, ASS, SBV
Styles	Bold, Classic, Boxed, Karaoke yellow
Output	H.264 MP4, audio copied
Processing	In your browser

Burning in (hard-coding) draws the subtitles into the picture so they show on every platform, even ones that don't support caption files.

Settings explained

Bold is large white text with a black outline, readable on any background. Boxed adds a translucent background bar for busy footage.

Making captions readable

Keep lines short. Two lines of up to 42 characters are the broadcast standard and read comfortably on phones.

Bold white text with a black outline works on almost any footage. Choose Boxed if the background is busy or bright, such as snow, sky or a white wall.

For vertical videos, burned-in captions sit near the bottom. Social apps overlay buttons and descriptions there, so leave a little margin by trimming long lines rather than adding more text.

Burning in re-encodes the video picture, so do it last, after trimming, cropping and merging. Keep the SRT so you can re-burn if you find a typo.

Frequently asked questions

Can viewers turn burned-in captions off?: No, they are part of the picture.
Do I need my own subtitles?: Yes. Bring your own SRT, VTT or ASS file, written by hand or exported from your editor.
Does it change the audio?: No, audio is copied.
Is the video uploaded?: No.
Which languages work?: Any language the Inter font covers, including Latin, Cyrillic and Greek scripts.
Is it free?: Yes, with your own SRT.
Can I change the font?: The bundled Inter font is used for consistent results; ASS files can set size and colour.
Can I burn two languages?: Combine both into one subtitle file with two lines per cue, then burn it in.
Can I burn subtitles on a phone?: Yes, for short clips. Burning in re-encodes the picture, so long or 4K videos are better done on a laptop.
Why do accents look wrong in the burned captions?: Save the subtitle file as UTF-8 and burn again; legacy encodings garble accented letters.