transparent-stamp

Remove white backgrounds from stamp images and convert them to transparent PNGs with enhanced red tones.

Updated May 23, 2026
One-click install
npx skills add https://github.com/zengbaocheng/hermes-tech-hub --skill transparent-stamp
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: transparent-stamp
Source: https://github.com/zengbaocheng/hermes-tech-hub/tree/main/image-processing/transparent-stamp
Command: npx skills add https://github.com/zengbaocheng/hermes-tech-hub --skill transparent-stamp

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

本技能通过去除印章图片的白色背景并转换为带透明通道的 PNG,同时增强红色调,使印章在数字场景中更清晰、好呈现。

Core Features & Use Cases

  • 白底去除与透明化:基于亮度和颜色偏差进行阈值判断。
  • 红色增强与边缘羽化:提升印章颜色并对边缘进行羽化处理,获得更平滑视觉效果。
  • Telegram 发送:将最终 PNG 以文档形式发送,确保透明通道完整保留。

Quick Start

Upload a stamp image (JPG or PNG) to produce a transparent PNG with enhanced red tones and then send it via Telegram.

Frequently Asked Questions about transparent-stamp

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I remove the white background from a stamp image and make it transparent?▼

To remove a white background from a stamp image, this Skill applies brightness and color deviation thresholds to eliminate white areas and export a transparent PNG.

Can I batch process multiple stamp images to transparent PNGs at once?▼

Yes, you can batch process multiple stamp images, applying white background removal, red tone enhancement, and edge feathering to generate transparent PNGs in a single workflow.

Does the transparent stamp PNG process include edge feathering?▼

Yes, edge feathering is applied during the transparent PNG conversion process to smooth the stamp borders, ensuring a cleaner visual transition without harsh pixelated edges.

How does the red enhancement feature improve stamp images?▼

Red enhancement boosts the red tones in stamp images during processing, making faded or dull red ink appear more vibrant and clearer for digital presentation as a transparent PNG.

How do I send a transparent PNG stamp via Telegram without losing transparency?▼

The Skill sends the final transparent PNG stamp as a Telegram document, which preserves the alpha channel completely compared to sending it as a standard photo preview.

What image formats can I upload to create a transparent stamp PNG?▼

You can upload JPG or PNG images to process, and the Skill will remove the white background, enhance red tones, and output a clean transparent PNG file.