Linux下使用自签名证书对PDF进行签名
一篇技术博客，介绍在Linux系统上生成自签名证书并对PDF进行数字签名及添加可见水印的方法，包含相关Python脚本。
• Copy the embed code to showcase this product on your website
• Share on X to spread the word about this amazing tool
Latest Weekly Picks
Weekly Pick
Impromptu Speech Topics & Timer
Seedance 2.0: Multimodal AI video creator. Precisely direct characters and cameras to create production-ready, multi-shot cinematic stories in one click.
Weekly Pick
Turn Feelings Into Words
Weekly Pick
One‑stop AI video creation suite for image‑to‑video and more.
Weekly Pick
Nano Banana AI is an AI photo tool for image generation and editing, enabling fast text-prompt edits, style transformations, and photorealistic results.
Weekly Pick
Try Different Hairstyles Instantly
Weekly Pick
Seedance 2 Delivers High Fidelity Motion and Audio Sync
Weekly Pick
Nano Banana AI Image Generator for Professional Image Creation with Nano Banana Pro Models