Build a Video Cropper with Claude Code

Build a Video Cropper web app. People search for "video cropper" about 43,000 times a month, plus related searches like "crop video online", "resize video for instagram", "video aspect ratio changer". The goal is a tool that ranks for those searches and makes money.

What it should do:
Build a video cropper web app. Create a homepage with video upload and platform presets (Instagram Story, TikTok, YouTube Shorts, etc.). When users upload a video, show a preview with adjustable crop frame overlay. Add aspect ratio buttons (1:1, 9:16, 16:9, 4:5) and custom dimension inputs. Include position controls to move the crop area and zoom functionality. Show before/after preview and export options. Use bright, social media-inspired colors with platform-specific branding. Focus on the upload and cropping interface first.

How to build it:
1. Read this folder first. If it is empty, set up Next.js (App Router, TypeScript, Tailwind). Write a short PLAN.md with the pages, components, any library or API you need, and what you are leaving for later. Then build.
2. Put the tool itself on the homepage so a visitor can use it within seconds, with no sign-up. Do the processing in the browser where you can, so it is fast and cheap to run. Look at how Kapwing, Clideo, FlexClip do it and make ours simpler and faster.
3. Make it rank. Use "video cropper" in the title tag, H1 and meta description. Under the tool, add a short how-to and an FAQ with FAQPage schema, and add a sitemap and robots.txt. Scaffold these programmatic pages from one template and a data file: /crop-video-for-[platform], /resize-video-to-[aspect-ratio], /video-cropper-[dimensions].
4. Monetisation: Freemium: 3 videos/day, $7/mo unlimited + batch processing. Add a pricing page and the free usage limit, and leave Stripe checkout as a clearly marked stub with the environment variables it needs.
5. Run it locally and test the main flow end to end, including edge cases like empty input and very large files. Fix what breaks, then finish with a summary of what works, what is stubbed and how to deploy it to Vercel.

Paste it into Claude Code in an empty folder. It plans first, so read PLAN.md and steer before it starts building.