Add AI captions to your short videos

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Saved fonts and style previews
Finished video and download options
Cover designs and video preview
Editable social post draft

CaptionBolt

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-94%$29
$468
  • Lifetime access
  • Refundable up to 60 days
  • Plus members are covered by our We Got Your Back guarantee
AppSumo Launchpad

Chosen by AppSumo for their potential and innovation

Adding captions to short videos usually means syncing text line by line and learning editing software you don’t have time for. CaptionBolt styles captions from your speech and gets the video ready to post.

TL;DR

  • checkmarkApply AI captions in 338 styles instantly, then review the words instead of fiddling with timing
  • checkmarkFinish videos with resizing, B-Roll, covers, branding, and social post drafts in one workflow

At-a-glance

captionbolt.com

Alternative to

Descript, Kapwing

Integrations

Pexels

Best for

Content creators, Marketing agencies, Social media marketers

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CaptionBolt logo

CaptionBolt

Turn spoken videos into captioned, social-ready shorts with 4K exports and no watermarks

Generate captions in the style you want

  • Generate captions from the speech in your video, then pick from 338 caption styles
  • Customize the look by adjusting the font, color, motion, and highlighted words
  • Fix names and terms in Text Editor without changing the audio
  • Automate captioning with a REST API, webhook, or MCP server for AI agents (available in Tier 3)
Generate captions in the style you want

Preview, resize, and export your finished video

  • Review every caption segment in the preview to see where the speaker and captions land
  • Switch to 9:16, 1:1, 4:5, or 16:9 and fit the shot with a crop, blurred background, or solid color
  • Download MP4s in up to 4K with no watermarks
  • Export a TXT transcript, plus SRT and ASS subtitle files (available in Tier 2 and above) or VTT (available in Tier 3)
Preview, resize, and export your finished video

Hook viewers with a cover and your branding

  • Pick a cover from 24 editable designs, then write or edit the opening text
  • Add B-Roll from suggestions, Pexels, or your own uploads, then adjust its timing
  • Keep your branding consistent with a logo, progress bar, or saved preset
Hook viewers with a cover and your branding

Write post copy without starting from scratch

  • Draft posts for TikTok, Instagram Reels, and YouTube Shorts from your video’s transcript
  • Choose a writing style so every draft matches your voice
  • Edit each draft with your own wording, hashtags, and YouTube title or description
  • Copy the finished text and paste it straight into your post
Write post copy without starting from scratch

Choose the plan that’s right for you

Feel secure in your purchase with AppSumo's 60 day money-back guarantee.

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Refundable up to 60 days
Plus members are covered by our
We Got Your Back guarantee
Deal terms & conditions
CaptionBolt
See CaptionBolt
Founded October 15, 2023
Hong Kong
1-10
Startup
Bootstrapped

Why we built CaptionBolt

People started coming to us with videos they'd already recorded. A lesson or demo might be finished, but a name in the captions could be wrong, or a sentence could break in an awkward place. We built CaptionBolt for that last bit of work before a video is ready to share.

It's for creators and small teams who already have footage they want to publish. CaptionBolt drafts the captions. You check the words, choose how they look, and decide whether the video needs anything else before exporting. We wanted that last stretch to be manageable without learning a full video editor.

Today we're working on the less visible parts of that path: easier caption review, dependable uploads and exports, and a preview that reflects the finished file. We want people to know what they're getting before they press export

Matt Liu
Founder

Questions & reviews