PDF 添加页码Add Page Numbers to PDF
给 PDF 添加页码：位置、样式、起始数字、字号都可调。Stamp page numbers on a PDF: position, style, start number, font size.
可用AvailablePDF 与文档PDF & Documents
PDF 压缩Compress PDF
重新压缩 PDF 内嵌的 JPEG 图片来减小体积，文字保持清晰、可选中。Shrink a PDF by re-compressing the JPEG pictures inside it. Text stays sharp and selectable.
理念：Idea: 不再被大小限制卡在最后一步。No more getting stuck on the size limit.
解决：Solves: 压小图片多的 PDF，文字保持清晰Shrinks image-heavy PDFs while text stays sharp
适合：For: 邮件或系统上传卡在大小限制的人Anyone stuck on an upload size limit
可用Available在浏览器中运行Runs in your browser
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在你的设备上本地处理。这里输入的内容不会上传。Processed locally on your device. Nothing you enter here is uploaded.
使用方法How to use
- 1选择一个 PDF。Choose a PDF.
- 2选「标准」或「强力」。Pick Standard or Strong.
- 3点「压缩 PDF」，页面会显示压缩后的大小和节省比例。Press Compress PDF. The page shows the new size and how much was saved.
说明Good to know
- 只重新压缩 PDF 里的 JPEG 图片（图片较大时降低画质与尺寸），文字和矢量图形不动。Only JPEG pictures inside the PDF are re-compressed (lower quality, smaller size when they are large). Text and vector graphics are not touched.
- 对照片、以 JPEG 保存的扫描页效果最好。纯文字 PDF 本来就很小，通常压不下去；结果没有变小时会保留原文件。Works best on PDFs made of photos or scanned pages saved as JPEG. Text-only PDFs are already small and usually cannot shrink; if the result is not smaller, the original is kept.
- 其他格式的图片（例如黑白扫描）保持原样。上限 100 MB。Pictures stored in other formats (for example black-and-white scans) are left as they are. Limit 100 MB.
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可用AvailablePDF 与文档PDF & Documents