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
A code-free online store builder to turn views into revenue. Sell digital products, subscriptions, and merch, without fees or hassle.
Maris
Weekly Pick
Convert videos into awesome blog posts.
Video To Blog
Weekly Pick
Weekly Pick
Fast Image AI instantly transforms your photos into stunning styles like Ghibli, Sketch, and Pixar. Effortlessly control image elements and create amazing effects with just one click.
Fast AI Team
Weekly Pick
AI-powered tool that transforms casual photos into professional LinkedIn headshots instantly. No photographer needed—just upload and download.
Gabriel
Weekly Pick
Crevas unifies Veo 3, Sora 2, Nano Banana and more into one intuitive canvas — so filmmakers can script, prompt, and generate cinematic stories without switching tools or losing consistency.
Spark Alpha
Weekly Pick
AI Foto Edit - Text to Image & Image Edit
foto miniatur