# PDF to Grayscale — 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://pdf-to-grayscale.yeezhan.com
Skill definition: https://pdf-to-grayscale.yeezhan.com/skill/SKILL.md
API documentation: https://pdf-to-grayscale.yeezhan.com/api/docs

## What this tool does
Convert a colour PDF to true black-and-white — save toner or satisfy black-only print requirements.

## Typical user problems
- Print shops charge colour rates for PDFs that merely contain a colour logo, and some submission portals reject colour files. Grayscale everything in one pass.

## Parameters


## 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
- Pages become 2x-resolution images (text no longer selectable)
- Max 200 MB