TikTok Auto Caption Generator

Generate viral-ready TikTok captions with word-by-word highlighting in seconds. Powered by AI — no manual typing needed. Free to start, ถูกที่สุด!

🚀 Generate TikTok Captions Free

Why TikTok Captions Matter

Videos with captions get 40% more watch time and significantly higher engagement. Most viewers watch TikTok with sound off — captions ensure your message gets through.

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+40% Watch Time

Captioned videos keep viewers watching longer, boosting your algorithm ranking and reach.

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Sound-Off Viewers

Over 80% of TikTok users scroll with sound off. Captions make your content accessible to everyone.

Viral Word-by-Word Style

The iconic word highlight effect used by top creators. FastCaption generates this style automatically.

How to Add Auto Captions to TikTok

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Upload Your TikTok Video

Drag & drop your video file. Supports all common formats including MP4 and MOV.

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AI Generates Captions

WhisperX transcribes with word-level timing. Choose "ASS Portrait" for the TikTok style.

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Import & Post

Download the ASS file, import into CapCut or your editor, and post your captioned TikTok.

FastCaption vs TikTok Built-in Captions

FeatureFastCaptionTikTok Built-in
Accuracy95%+~80%
Word-by-word highlighting✓ Customizable✗ Basic only
Multi-language15+ languagesLimited
Export subtitle file✓ SRT, ASS, JSON✗ No export
Use in other editors✓ Any editor✗ TikTok only
PriceFree + from ฿49Free (limited)

TikTok Caption FAQ

Upload your TikTok video to FastCaption, select your language, and click Transcribe. In seconds, you'll get an ASS subtitle file with word-by-word highlighting — the same trendy style you see on viral TikToks. Download and import it into CapCut, Premiere Pro, or any editor.

Yes! FastCaption generates ASS subtitle files with animated word-by-word highlighting, matching the popular TikTok caption aesthetic. You can choose between portrait (9:16) and landscape (16:9) orientations.

FastCaption exports ASS files that you can import into video editors like CapCut, Premiere Pro, or DaVinci Resolve. After burning the subtitles into your video, upload to TikTok with perfectly styled captions.

FastCaption offers significantly better accuracy (95%+ vs ~80%), supports more languages, and gives you full control over styling. TikTok's built-in captions are basic and can't be exported.

New users get 5,000 free credits (≈25 minutes). After that, credits start at just ฿49 for 5,000 more. No subscription required — pay only for what you use. The cheapest subtitle generator available.

อัปโหลดวิดีโอ TikTok เลือกภาษา แล้วกด Transcribe ภายในไม่กี่วินาทีจะได้ไฟล์ ASS แบบ word-by-word highlighting นำไปใส่ CapCut หรือ Premiere Pro แล้วอัปโหลด TikTok ได้เลย

Start Creating Viral TikTok Captions

5,000 free credits. No credit card. No subscription. ถูกที่สุด!

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