# Adjust Brightness & Contrast — 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://brightness-contrast.yeezhan.com
Skill definition: https://brightness-contrast.yeezhan.com/skill/SKILL.md
API documentation: https://brightness-contrast.yeezhan.com/api/docs

## What this tool does
Fix underexposed or washed-out photos — brightness, saturation and hue in one pass.

## Typical user problems
- Underexposed photos, over-saturated scans, slightly off-colour images — fix them in one pass with precise numeric controls.

## Parameters
- brightness: number (range 0.1-3), optional. 亮度
- saturation: number (range 0-3), optional. 饱和度
- hue: number (range 0-360), optional. 色相旋转 (°)

## 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
- Output format follows input unless specified