AI YouTube Shorts Caption Generator
Shorts captions under 90 characters with 3-5 high-curiosity hashtags including #shorts — written to stop a swipe, not to describe the video.
60 free generations per month. No credit card. Bring your own AI key.
Why creators use this
Under 90 characters, because a Shorts caption renders over the video itself and a long one covers the frame people came to watch.
Includes #shorts plus 3-5 curiosity-driven tags on the same line, which is the format the Shorts shelf expects.
Written for curiosity rather than description — the title already describes the video, so the caption gets a second, different hook.
How it works
Drop a YouTube URL. We grab the captions in seconds. Or paste any transcript directly.
Get your YouTube Shorts caption in a single pass — plus 19 other platform-native formats.
Edit inline, regenerate any output, hit "Make more viral" for a stronger rewrite.
FAQ
How long should a YouTube Shorts caption be?+
Under 90 characters. The caption overlays the video on mobile, so anything longer starts obscuring the content itself.
Do I still need to use #shorts?+
It's no longer required — YouTube identifies Shorts from aspect ratio and duration. It costs nothing as an extra categorisation signal, which is why it's included by default.
How is this different from a TikTok caption?+
Shorter, and it keeps hashtags on the same line. TikTok captions run to about 150 characters with niche tags on a separate line; Shorts fits everything under 90.
Can I just reuse the video title as the caption?+
You can, but it wastes the slot — the title is already displayed. The caption is a second chance at a different angle on the same video.
Get your YouTube Shorts Caption Generator now
Plus 19 other platform-native formats from the same source — free.
Start freeMore AI tools
A separate hashtag set for each of YouTube, Instagram, TikTok, LinkedIn and X — 7-12 per network, mixed volume, tuned to how that platform actually treats tags.
Eight hooks pulled from your own content, each paired with the reusable template behind it and a note on why it works — so you get a repeatable pattern, not a disposable line.
Three thumbnail concepts generated from what your video actually covers — each with the visual composition, a text overlay of four words or fewer, a colour palette, and the emotion it should convey.
Other formats included with every project: YouTube title, YouTube description, SEO tags, LinkedIn post, Twitter / X thread, Blog article, TikTok caption, Instagram caption, Facebook post, YouTube Shorts caption and more.