Format presets
Start with the shape you need
Use Original, 9:16, 1:1, 4:5, or 16:9 without guessing dimensions.
New caption projects preserve the original aspect ratio. You can switch the ratio, crop, reposition, or use a blurred or solid background before export.
No credit card required
Choose a common aspect ratio.
Reposition inside the frame.
Crop, caption, trim, and export.
Format presets
Use Original, 9:16, 1:1, 4:5, or 16:9 without guessing dimensions.
Three background modes
Scale and position the source while checking the speaker, captions, headlines, and platform-safe areas.
One export-ready pass
Finish the vertical format alongside captions and an optional manual Trim, then review the same result you will export.
How it works
Keep the core edit simple: upload the raw take, review the finish, and export the version you can publish.
Choose the source video.
Pick the output ratio.
Position the speaker.
Download the resized result.
Keep finishing in one place
Finish the same recording without moving the work into a complicated multi-track editor.
Upload a talking-head video. CaptionBolt transcribes it, applies a polished caption style, and keeps every word ready to review before export.
Learn moreTrim is off by default. When a recording needs it, set the in and out points yourself and preview the result before export.
Learn moreAdd a subtle progress treatment and control its color, thickness, and placement without keyframing.
Learn moreQuestions
No. Upload your video, review the result, and adjust only what you want.
Yes. The video stays reviewable until you choose to export it.
Yes. Every setting remains editable before the final render.
Finish the next take
Choose the format and finish the edit in one place.
No credit card required