Add captions to video in your browser

Adding captions to your videos is one of the most effective ways to improve accessibility and reach a wider audience. Our free online caption generator uses advanced AI speech recognition to automatically transcribe spoken words into timed subtitles that appear on screen. Unlike traditional subtitle workflows that require importing SRT or VTT files and syncing them manually, our tool handles the entire process — from transcription to styling to final export — in a single streamlined interface. The caption styles are fully customizable: choose from preset designs optimized for social media platforms like TikTok, Instagram Reels, and YouTube Shorts, or fine-tune fonts, colors, sizes, and positioning to match your brand. Once you're satisfied with the look, the captioned video is rendered directly in your browser as an MP4 file with the subtitles permanently burned in. This means your captions will display correctly on every device and platform without relying on external subtitle tracks. Whether you're a content creator looking to boost engagement, a business producing training videos, or someone who wants to make their content more inclusive for viewers who are deaf or hard of hearing, our caption tool keeps the process fast with browser-first and premium server transcription options.