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Katto

Automatically turn long videos into captioned vertical shorts and rank them

freemium
Last Updated 9/7/2026

About Katto

Katto turns video links or files into captioned vertical shorts and ranks identified highlights by viral potential. It automatically handles reframing, speaker detection, captions, opening hooks, B-roll, and expression effects, while processed content remains editable at any time. It supports connecting to a tech stack or handing off to an AI agent through an npx command, making it suitable for turning long videos into ready-to-publish short-form videos.

Best for

Video creators
Short-form video operators
Developers
AI agent integrators

Best use cases

Turn long videos into publishable short-form videos

Select and rank high-potential video clips

Automatically add captions and packaging to vertical shorts

Connect to a tech stack or AI agent through npx

Features

Smart Clip Scoring

Scores each moment across 4 dimensions and ranks it by viral potential.

Automatic Vertical Packaging

Automatically applies reframing, speaker detection, captions, Hook, B-roll, and expression effects.

Editable Edits

Automatically processed content remains editable at any time.

Developer Integration

Connect your tech stack or hand off to an AI agent with a single npx command.

Pros

  • Scores and ranks each moment across 4 dimensions
  • Automatically applies captions, reframing, B-roll, and expression effects
  • Automatically processed content remains editable at any time
  • Connects to your tech stack or an AI agent with a single npx command

Cons

  • 2 videos per month on Free, maximum 30 minutes per video, 720p output
  • Free uploads are limited to 500 MB and include a Katto watermark

Pricing Plans

Free

€0/monthmonth
  • 2 videos per month
  • Maximum 30 minutes per video
  • 720p output

Creator

€15/monthmonth
  • 25 videos per month
  • 5 GB of upload space
  • Multiple scored clips per video

* Pricing information is for reference only. Please refer to the latest announcement on Katto's official website.

FAQ

Supports YouTube links, MP4, MOV, WebM, and MKV, up to 90 minutes; Free uploads are limited to 500 MB, while Creator and above allow 5 GB.
Free can process 2 videos per month, with a maximum of 30 minutes per video, 720p output, and a small Katto watermark.

Tool Information

DeveloperKatto
Release Date9/7/2026
Pricingfreemium