All ToolsPaste your video topic → get 3 TikTok caption variations. Short and hooky or multi-line with CTA. On-device AI — your topic stays in your browser.
TikTok captions do less heavy lifting than on Instagram — the video carries the message. But a good caption can sharpen the hook, tee up a question that drives comments, or set up your CTA. Short captions (1-2 lines) usually outperform long ones on TikTok. This tool gives you 3 variations so you can pick the tightest angle. On-device AI, zero cost.
1-3 lines for most videos. The video does the work — the caption just sharpens the hook or prompts a comment. Long captions (paragraph-style) work for storytelling or educational content where viewers need context.
In the caption itself — TikTok doesn't have a separate tag field. The full caption (text + hashtags) is capped at 2,200 characters total.
It can widen reach but only helps if paired with 2-3 niche tags that actually match your content. #fyp alone is noise to the algorithm. Mix one broad tag with niche tags.
Yes — Chrome's Gemini Nano runs locally. Your topic and captions never leave your browser. Zero API cost, zero privacy tradeoff.