How to add captions to a TikTok video
Accurate text you control, instead of whatever the app guessed.
A large share of short-form video is watched with the sound off, which makes captions not an accessibility extra but the difference between a video that lands and one that gets scrolled past. TikTok's built-in captions are a reasonable starting point and a poor finishing point: they mishear brand names, drop punctuation, and you cannot take them with you when the same clip goes to Reels and Shorts.
Open the subtitle editor → Generates captions from your video file on your own machine. Export SRT, keep it for every platform.- 100% freeNo account, no minute quota, no paid tier.
- Nothing is uploadedYour video is read on your device and never reaches a server.
- No catch on the outputNo watermark, no length cap, no locked export formats.
- Updated in the openEvery fix is written down on the changelog page.
Caption the file, not the post
Work from the exported video file rather than inside the app. Drop it into the editor, let speech recognition do the first pass, then fix what matters: your handle, the product you are talking about, any slang the model flattened into a real word. Short videos are fast — a 45-second clip is a minute of work.
Because you are working from the file, the result travels. The same SRT works for Instagram Reels, YouTube Shorts, LinkedIn and a website embed. Captions made inside one app never leave it.
Two ways to get them onto the video
The straightforward route: upload your video to TikTok, then in the caption editor replace the automatic text with your corrected lines. TikTok's editor lets you fix wording and timing line by line, and having the accurate version in front of you makes that a copy job rather than a listening job.
The other route is to burn the text into the picture with whatever editor you cut the video in — Premiere, Final Cut, CapCut and DaVinci all import SRT and turn it into styled text you can position and animate. That gives you full control over look, and it is what most creators who care about typography end up doing. Burning in is not yet available here; exporting the SRT that those tools import is.
What to fix before you post
Reading speed is the one that actually costs you views. Short-form speech is fast, and a line that stays on screen for under a second is decoration rather than information. The editor shows characters per second next to each line and flags the ones nobody could finish reading — split those into two.
Keep lines short. Vertical video has narrow usable width and the bottom third is often covered by the interface, the username and the sound label. Two short lines high in the lower third read far better than one long line that wraps unpredictably.
Check the first three seconds hardest. That is where a viewer decides, and a mistranscribed opening word is the one everybody sees.
Frequently asked questions
Does TikTok accept an SRT upload?
Not as a direct upload the way YouTube does. You either paste and correct the text in TikTok's caption editor, or burn the captions into the video in an editor that imports SRT.
Do captions actually help reach?
They keep people watching when the sound is off, and watch time is what the ranking responds to. Treat that as the mechanism rather than captions being a ranking factor in themselves.
Can I do this on my phone?
You can edit and export subtitle files on a phone here, but generating them from a video needs a desktop browser — the speech model will not run in a mobile browser.
What about the same clip on Reels and Shorts?
That is the reason to keep the file. One corrected SRT covers all three, and the platform-specific steps are in the Reels and YouTube guides.