Captions Generator

Captions Generator is an online AI caption and subtitle generator built by an independent developer. A user drops a video, audio or SRT file, and the tool transcribes the speech in 100 languages, timing each word to the audio, without requiring an account. It is built for anyone who wants captioned video for platforms such as TikTok, Reels, YouTube Shorts or accessibility, without using a full video editor.

After uploading, a person can fix any transcribed word, pick from a library of caption styles, add a hook title, and translate the subtitles into another language before exporting a captioned MP4 or downloading SRT, VTT and TXT subtitle files. The editor can also copy a caption style straight from a screenshot, matching the font, size, colors, outline and position seen in the example.

The free plan supports videos up to 30 minutes with 1080p MP4 export, 8 caption styles, 15 fonts, free translation into more than 100 languages, and unlimited downloads, with a small watermark on video exports only. The Pro plan removes the watermark, extends video length to 90 minutes, unlocks all 22 caption styles with word animations such as karaoke, adds AI keyword highlights, custom fonts, saved styles, bilingual captions and exports up to 4K.

The company publishes its own speed and accuracy tests against other caption tools: it reports finishing captioning 6.7x faster than CapCut and 4.7x faster than VEED on the same video, and making the fewest transcription mistakes among 8 caption tools tested on hard audio such as accents and loud music. Pro costs $6.99 a month as a limited-time price, or $59 a year, and the company says only the audio of an uploaded video is ever sent off-device, with the video itself processed and exported in the browser.

Use cases

• Adding bold captions to TikTok, Reels and Shorts that keep sound-off viewers watching
• Uploading an SRT subtitle file so YouTube viewers can switch it on
• Translating subtitles for viewers abroad