# Photo to Scanned Document Look — yeezhan.com
> One-time pay-per-task emergency tool to make your file ready for submission.
> No credits, no balance. One payment unlocks one task result, valid for 24 hours.

Tool domain: https://doc-enhance.yeezhan.com
Skill definition: https://doc-enhance.yeezhan.com/skill/SKILL.md
API documentation: https://doc-enhance.yeezhan.com/api/docs

## What this tool does
Phone photo of a document → clean grayscale "scanned" look — grey bg whitened, text sharpened.

## Typical user problems
- Photo of a page = greyish background, shadows at the edges, uneven lighting. Submission systems and readers prefer the crisp look of a real scanner. You need the conversion without owning one.
- Teachers demand "scanned or clearly readable" pages. A phone photo on a desk looks nothing like a scan — this fixes the background, contrast and sharpness in one pass.

## Parameters
- strength: enum, optional. 增强强度

## Pricing
- Watermarked preview: free, no login required
- Final clean output: $0.99 one-time per task
- Require login (email/phone OTP) to complete payment
- Result available for download 24 hours after payment

## Limitations
- Max input 50 MB
- Grayscale output
- Heavy shadows at page edges may remain — crop first for best results