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The Just Captions blog

Guides and tips for adding clean, readable captions to short-form video — on your device, in about a minute.

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Guides & how-tos

Creator recording a video at home add captions, fast
Guide

How to add captions to a video on iPhone

Every way to caption a clip on iPhone — and the fastest one that keeps your footage private.

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Creator holding a clapperboard before filming it's SO easy
Platform guide

How to add captions to a TikTok video

Caption your TikToks in a minute, placed inside the safe zone so the UI never covers a word.

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Creator holding a camera one product, done
Platform guide

How to add captions to Instagram Reels

Subtitles styled and placed for the Reels safe zone, clear of the caption and action buttons.

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A person walking down a busy city street best street in town
Platform guide

How to add captions to YouTube Shorts

Burned-in captions that stay visible on mute and clear of the Shorts title and buttons.

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Editing a video on a laptop caption it free
Free tool

Add subtitles to a video online

Caption a clip free, right in your browser — on your device, nothing uploaded, no sign-up.

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Filming a clip with a smartphone free & private
Comparison

A free, on-device Captions app alternative

How Just Captions compares to the Captions app — on-device, free to start, no account.

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App features

Get more from Just Captions

Filming content to caption in a batch the whole batch
Feature guide

How to batch add captions to videos

Queue up to 20 clips, pick a style once, and caption the whole set on device.

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Colorful speech bubbles representing many languages every market
Feature guide

Translate one video into multiple languages

Caption once, then export a localized cut for every market — same timing.

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Editing text on a laptop clean, instantly
Feature guide

Use AI to correct your transcriptions

Fix punctuation, casing, filler and mishears in a tap before you export.

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Reading text on a phone any language
Feature guide

Use AI to translate your captions

AI Auto Translate converts your subtitles and keeps the original timing.

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Add captions to your next video. That's it.

Free to start, no card, nothing uploaded. Drop in a clip and watch the captions write themselves.

Download on theApp Store