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SUPPORT CONVERTCRAFT KEEP THE FREE TIER ALIVE

We don’t track you and we don’t know if you’re using an adblocker. Our ads are run by Google — no pop-ups, no annoying ads, just clean placements. Ads help us keep our free tier completely free for everyone.

Why We Need Your Support

  • Google Ads Only: We run Google AdSense — no pop-ups, no video ads, no misleading banners. Just clean, non-intrusive placements.
  • No Tracking: We do not track you, sell your data, or monitor your browsing. Your privacy is absolute.
  • Free Forever: Ads fund our servers so we can keep the free tier available to everyone, everywhere, without compromise.

Whitelist Us 💜

If you use an adblocker, please consider whitelisting ConvertCraft. It takes 10 seconds and directly keeps the project alive.

Every ad view helps us maintain servers, develop new tools, and keep your data private — all at no cost to you.

No Pop-upsNo TrackingGoogle AdsPrivacy FirstFree Forever

❤️ Support ConvertCraft

Buy Me a CoffeeSupport Plan — $4.99/mo

Support via Buy Me a Coffee or get the Support Plan with exclusive benefits.

指南

如何在线压缩 PDF 不损失质量

ConvertCraft PDF 压缩器免费 PDF 文件大小减小方法 — 步骤指南,无需上传、无需软件,无需质量损失。

大文件PDF是持续的麻烦 — 它们会堵塞电子邮件附件、减慢上传速度,并占用云存储空间预算。大多数在线PDF压缩工具要求你将文件上传到远程服务器,这引发了明显的隐私问题,例如敏感合同、医疗记录或财务报表。

ConvertCraft的PDF压缩工具完全在浏览器内运行。当你将文件放置在工具上,它将使用 WebAssembly 驱动程序来重新编码图像、删除不使用的元数据,并优化PDF内部结构 — 都没有将文件发送到网络。

将PDF压缩:1) 打开ConvertCraft的PDF压缩工具。2) 将文件或点击浏览。3) 选择一个质量预设(高、平衡、或最大压缩)。4) 点击压缩并立即下载结果。

在我们的测试中,一个典型的12MB扫描量高的PDF压缩量在平衡质量下可以压缩到低于3MB,几乎没有可见差异。对于图像密集型的文档,节省可以更高更显著 — 达到80%的减少。

因为一切都在本地运行,因此服务器上传的文件大小限制没有服务器上传。你可以压缩超过100MB的文件的,只要你的浏览器有足够的内存。