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 页面旋转Rotate PDF Pages
把 PDF 的全部或指定页面旋转 90°、180° 或 270°。Turn all or selected pages of a PDF by 90, 180 or 270 degrees.
理念：Idea: 把歪了的页面扶正，看着也舒心。Set crooked pages straight; easier on the eyes.
解决：Solves: 把倒着、横着的页面转正Turn wrong-way pages upright
适合：For: 扫描后页面方向颠倒的人Anyone with sideways scanned pages
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选择旋转角度和要旋转的页面。Pick the angle and which pages to turn.
- 3点「旋转并生成 PDF」，下载结果。Press Rotate PDF and download the result.
说明Good to know
- 页面的文字和图片原样保留，只改变页面方向。Pages keep their text and images; only the page rotation changes.
- 旋转角度会叠加在页面原有的方向上。The rotation is added to any rotation a page already has.
- 有密码的 PDF 需要先解除保护。上限 100 MB。Password-protected PDFs must be unlocked first. Limit 100 MB.
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PDF 添加水印Add Watermark to PDF
给 PDF 全部或指定页面添加文字水印，居中或铺满，支持中文。Add a text watermark (centred or tiled, any language) to all or selected PDF pages.
可用AvailablePDF 与文档PDF & DocumentsPDF 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.
可用AvailablePDF 与文档PDF & DocumentsMarkdown 转 PDFMarkdown to PDF
把 Markdown 排版成 A4 或 Letter 的 PDF。每页是图片，PDF 中的文字不能选中。Turn Markdown into a paged A4 or Letter PDF. Pages are pictures, so the text is not selectable.
可用AvailablePDF 与文档PDF & Documents