# Base64 Encoder / Decoder — 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://base64-codec.yeezhan.com
Skill definition: https://base64-codec.yeezhan.com/skill/SKILL.md
API documentation: https://base64-codec.yeezhan.com/api/docs

## What this tool does
Encode text to Base64 or decode back.

## Typical user problems
- Base64 encoding for API payloads.

## Parameters
- mode: enum, required. 模式

## 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 20 MB