Free AI caption generator

Free AI caption generator
for TikTok, Reels, and Shorts.

BlitzReels is a free AI caption generator that transcribes your video, times every word to the frame, and hands back captions styled for the feed. No account needed to try it.

Generate captions nowUpload to try
No signup to previewWord-level timing30+ styles
Hormozi style

How the AI caption generator works

From raw video to AI captions in about a minute.

  1. 01

    Drop in a video

    MP4, MOV, WebM, MKV. A 20-second clip or a 2-hour podcast, same flow.

  2. 02

    AI transcribes and times

    The auto caption generator writes down what's said and times every word to the frame it lands on.

  3. 03

    Add captions to video

    Pick a caption style, preview it live, then burn captions into the video or export just the SRT.

Why creators use it

Fewer hands on the timeline. More posts out the door.

Word-level timing

The auto caption generator times every word to the frame it's spoken. No manual nudging on a timeline.

Word-level timing
00:02.14 → Most
00:02.41 → social
00:02.73 → video
00:03.08 → plays

Native per platform

30+ styles tuned for TikTok, Reels, and Shorts. Safe-zone aware, so the UI doesn't clip your captions.

Captions are watch time

Most social video plays without sound. Captions are the difference between a scroll and a watch.

Free to try

Upload, preview, decide. An account is only needed to export, not to see how it looks.

Built per platform

One caption generator, styled for where you post.

TikTok

The AI caption generator for TikTok creators already use, tuned for watch time.

Explore templates

Instagram Reels

The AI Instagram caption generator built for Reels. Word-level timing, feed-safe sizing, caption generator for Reels creators.

Explore templates

YouTube Shorts

Shorts-safe sizing. Export SRT for translation, or burn in native captions.

Explore templates

Facebook & LinkedIn

Same video caption generator, cleaner styling for business content.

Explore templates

After captions

Keep editing without leaving the browser.

30+ caption styles

Hormozi, MrBeast, karaoke, minimal. Browse the library of styles that already go viral.

Browse styles

SRT editor

Fine-tune timing and export SRT files for YouTube, review, or downstream editing.

Open SRT editor

Full video editor

Timeline editing, overlays, backgrounds, and exports. All in the same BlitzReels workflow.

Open editor

FAQ

Frequently asked questions

Try the free AI caption generator.

Upload a video, preview captions, decide whether you want an account.

Generate captions nowSee pricing

Create

Crée ta prochaine vidéo short-form maintenant.

Commence avec un rush ou un enregistrement long. BlitzReels regroupe sous-titres, clipping, nettoyage et export au même endroit.

Créer mon premier short
Essai 7 jours inclusWorkflow complet testableClip simple et clipping long-form

New short-form project

Drop video or paste a URL

Upload source video

Clip, caption, reframe, clean up, export

ClipReframeCaptionExport