Instagram caption generator
Turn your reel into captions that fit it. Upload a reel and Cadenus reads the audio and the frames, then writes four caption options grounded in what is actually in the video. No templates, no hashtag spam.
Free · no account needed
Instagram
TikTok
Facebook
LinkedIn
XCaptions from the reel itself
Not a title prompt, not a topic guess. The tool reads what your video actually says and shows.
STEP 01
Upload your reel
MP4 or MOV, up to 170 MB. It uploads to secure storage and is deleted the moment your captions are ready.
STEP 02
It watches the video
We transcribe the audio and read a few key frames, so the caption is grounded in the real hook, message and moment.
STEP 03
Get four clean options
Distinct angles, each ready to paste. Copy the one that lands, or ask for a fresh set. No hashtag spam, just the copy.
Instagram caption generator FAQ
Is the Instagram caption generator free?
Yes. You can generate captions for up to five reels a day with no account and no card. Inside Cadenus there is no daily limit, and captions come in your brand's voice for every client.
How does it write the caption from my video?
It reads what is actually said and shown in the reel, transcribing the audio and looking at a few frames, then writes captions grounded in that content instead of guessing from a title.
What language are the captions in?
The captions come back in the same language as your reel, so they are ready to post to your own audience. If your reel is in English you get English captions, if it is in another language you get that language.
Do you store my video?
No. The video is processed once to write your captions, then deleted straight away. Nothing about it is kept.
Where are the hashtags?
We keep the caption itself clean, a wall of hashtags in the copy reads as spam, so hashtags are handled separately, the way strong accounts post. If you want a smart, sized set for this post, use our free hashtag generator. Open the hashtag generator.
This is one small thing Cadenus does
Inside the product, captions come in your brand's voice for every client, then run through production, client approval and native publishing, all in one place.