扫描成 PDF

扫描文档转 PDF — 免费

Turn photos of documents into clean, multi-page PDFs — capture pages in your browser, then combine them into a PDF on our secure server, deleted automatically afterwards.

  • 多页扫描,自动裁剪
  • 锐化并矫正每一页
  • 免费 · 无需注册 · 文件自动删除

使用相机或上传照片

PDF
Scanning to PDF
文件在处理后自动删除通过 HTTPS 安全处理

Frequently Asked Questions

在手机上打开此工具,点击“启动相机”,允许访问相机,将文档对准取景框,然后为每一页点击“拍摄”。各页会被堆叠成一个多页 PDF,你可以通过拖动来重新排序。完成后点击“生成 PDF”,文件便会下载到你的手机上。无需安装任何扫描应用。

usage

可以——getUserMedia(摄像头 API)在 iOS Safari 14+ 以及 Android 的 Chrome / Firefox 上均受支持。本工具默认以你设备支持的最高分辨率请求后置(环境)摄像头,现代手机通常为 1920×1080 或更高。

technical

可以。「从相册选取」按钮让你从相机胶卷或文件应用中挑选已有的图片。你可以在同一个 PDF 中混用相机拍摄和相册选取的图片——这在你想把扫描的身份证添加到拍摄的合同中时很有用。

features

国际通信选择 A4,美国文档选择 Letter——两者都会生成标准纸张尺寸、照片居中的可印刷 PDF。「适应图片」会将每个 PDF 页面调整为其源照片的尺寸,生成文件更小且没有白边(适合纯数字分享)。

features

不能——扫描转 PDF 生成的是纯图像 PDF(即嵌入 PDF 容器中的照片)。要让文字可搜索、可选中,请将输出文件交给我们的「PDF 转文本」工具(提取文字)或「图片转可搜索 PDF」工具(添加隐藏文本层)处理。

features

相机画面在你的浏览器中捕获,随后页面图像通过 HTTPS 发送到我们的安全服务器以拼装成最终的 PDF;处理完成后它们会被自动删除,绝不存储或共享。如果你的使用场景(例如护照或医疗记录)需要一款完全不上传任何内容的工具,请改用离线扫描应用。

privacy

使用明亮、均匀的光线——靠近窗户的日光最佳。将手机与页面平行握持(不要倾斜),以避免梯形畸变。以全画质拍摄(滑块设为 90% 以上),如果打算打印,请选择「适应图片」,这样页面就不会被缩小到 A4。

tips

当然。无需订阅,也没有按页收费——扫描和多页 PDF 导出均免费,并配有充裕的每日额度;而且与许多扫描应用不同,我们绝不给你的输出加水印。

pricing

可以。每张拍摄或上传的照片都会显示为缩略图 — 拖动它们排成正确的顺序,点击垃圾桶图标即可删掉模糊或重复的照片。当你点击「生成 PDF」时,只有你保留的页面才会按你设定的顺序进入最终的 PDF。

features

可以。「启动相机」按钮支持任何网络摄像头,因此除了手机,你也能用笔记本电脑或台式机扫描。如果手边没有相机,可用「从相册」添加你已经拍好的照片 — 在同一个 PDF 中可混用相机拍摄和上传的照片。

usage

The Quality slider sets the JPEG compression level (40%-100%) used both when the camera captures each page and when the pages are embedded into the final PDF. Higher values keep more detail — important for small print or fine signatures — but produce a larger file, while lower values shrink the PDF for easier emailing at the cost of some sharpness.

quality

Yes. Type your preferred name into the Output filename field before tapping Build PDF & Download, and the browser saves the file under that name instead of the default scan.pdf. This is handy for naming multi-page scans something specific like invoice-march.pdf right away.

usage

For anything you'll print or submit as an official document, choose A4 or Letter (matching your region) with the Quality slider set to 90% or higher, so text and signatures stay crisp at full page size. If the PDF is only for quick digital sharing, drop the quality to around 60-70% and pick 'Fit to image' to keep the file small with no white margins.

tips

Yes. The Output filename field in the tool's control panel lets you type any name you want (it defaults to 'scan.pdf') before you tap Build PDF & Download, so the file that lands on your device is already named for its contents — like 'lease-agreement.pdf' or 'receipts-march.pdf' — instead of a generic scan file you have to rename afterward.

usage

How Scan to PDF helps you get it done

Real problems it solves every day — for businesses, creators, and everyday tasks. Find the use case that fits you and start in seconds.

For Business

费用报销收据提交

在出租车上、餐厅或酒店拍下收据,将一叠收据合成一份多页 PDF,再通过 Concur、Expensify 或公司门户提交。无需扫描仪——一部手机即可。

Legal

已签署合同回传

打印、签名、扫描、回传——无需扫描仪。用手机拍下每一页签好的文件,按需重新排序,几分钟内便可将 PDF 邮件发送给对方。

Education

学生作业与笔记

手写作业、数学习题集或课堂笔记都能转成 PDF,上传到 Canvas、Blackboard 或 Google Classroom。多页支持可轻松处理最长的论文或练习卷。

Finance

税务文档归档

收据、W-2、1099 表格以及各类证明文件最终都成了纸质材料。扫描转 PDF 可将它们整理成一份年度报税档案,方便分享给会计。

Personal Use

病历共享

诊所开具的纸质化验结果、处方或转诊单都可转为 PDF,便于分享给专科医生、寻求第二诊疗意见或用于保险理赔——而且无需将敏感扫描件留在第三方服务器上。

Travel

旅行证件备份

将护照、签证、身份证、机票和行程扫描成一份 PDF 随身存在手机里。在国际旅行中应对使领馆、海关和紧急联络都很实用。

Real Estate

Rental Move-In / Move-Out Condition Reports

Photograph every room during a walkthrough and build a single dated PDF as proof of the unit's condition — useful evidence for tenants and landlords if a security-deposit dispute comes up later.

Career & HR

Job Application Document Packets

Scan transcripts, certificates and reference letters with your phone and combine them into one ordered PDF for job portals and university applications that only accept a single upload.

Research

Research & Archive Citation Scans

Photograph library book pages, journal articles or archival documents on the spot and reorder the pages into a clean multi-page PDF for citations and note-taking without hauling a scanner into a reading room.

Legal

为纠纷或小额索赔整理证据包

Scan correspondence, invoices and photographed damage into one ordered PDF exhibit, dragging pages into the sequence a small-claims filing or dispute letter expects.

Finance

Digitize Receipts & Invoices for Expense Reports

Photograph paper receipts and invoices as you collect them, reorder the pages to match your expense report's line items, and build a single PDF to attach to a reimbursement claim or hand to a bookkeeper — no need to keep the paper originals.