Why burned-in captions instead of an uploaded caption file?

Burned-in captions render identically on every platform and cannot be switched off. Platform caption tracks vary in styling, are sometimes off by default, and are ignored entirely by some in-feed players.

Do the captions match the voiceover exactly?

Yes. They are generated from the same narration the voice reads rather than transcribed from the finished audio, so they do not drift out of sync or mishear words.

Can I change the caption style?

Yes, including fonts, highlight colour and word-by-word emphasis. Keep it legible above all else: a caption style that is hard to read at speed costs more retention than it gains in personality.

Do captions actually improve retention?

A large share of short-form viewing happens with sound off or in places where audio is impractical, so a video that only works with sound loses those viewers immediately. Captions also help viewers who simply read faster than the narrator speaks.

[ Feature ]Capability

Auto Captions & Subtitles: Boost Retention with Burned-In Text

Automatically add accurate burned-in captions with word-by-word highlights, emojis, and brand fonts. ShortFast generates karaoke-style subtitles that keep viewers reading and watching longer, proven to increase retention by up to 40% on TikTok, Reels, and Shorts.

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[ 01 ]What you get

Inside Auto Captions & Subtitles

Highly accurate AI transcription in multiple languages

Karaoke-style word-by-word highlights for retention

Emoji integration that matches the tone of your content

Custom brand fonts, colors, and positioning

Burned-in subtitles, no reliance on platform auto-captions

Accessible content that reaches viewers watching on mute

FAQ

Common questions

Why burned-in captions instead of an uploaded caption file?: Burned-in captions render identically on every platform and cannot be switched off. Platform caption tracks vary in styling, are sometimes off by default, and are ignored entirely by some in-feed players.
Do the captions match the voiceover exactly?: Yes. They are generated from the same narration the voice reads rather than transcribed from the finished audio, so they do not drift out of sync or mishear words.
Can I change the caption style?: Yes, including fonts, highlight colour and word-by-word emphasis. Keep it legible above all else: a caption style that is hard to read at speed costs more retention than it gains in personality.
Do captions actually improve retention?: A large share of short-form viewing happens with sound off or in places where audio is impractical, so a video that only works with sound loses those viewers immediately. Captions also help viewers who simply read faster than the narrator speaks.

[ 02 ]More capabilities

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Auto Captions & Subtitles: Boost Retention with Burned-In Text

Inside Auto Captions & Subtitles

Common questions

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