PDF Editor HQPDF Reader Online Free - Open & Read PDF Files
Free online PDF reader — open a PDF file and read it right in your browser with zoom and page navigation. No install, no signup, and the file never leaves your device.
Drop a PDF here or click to open it
Rendered in your browser — the PDF is never uploaded.
用完 PDF Reader 了？接下来试试这些
为您精选与 PDF Reader 搭配得当的工具。无需丢失文件，继续操作。
PDF 编辑器
直接编辑 PDF 中已有的真实文本——点击任意一行，修改文字、字体、字号和颜色，遮白或添加文本，然后下载。免费、无需注册、没有水印；文件安全处理并自动删除。
立即试用PDF 批注
为任意 PDF 添加文字备注和彩色高亮——点击放置，选择颜色和大小，导出为 PDF。免费、无需注册、无水印；文件在我们的服务器上安全处理并自动删除。
立即试用PDF 转 Word
将 PDF 转换为可编辑的 .docx，可在 Word、Pages 和 Google Docs 中正常打开，并保留原有排版。免费、无需注册、无水印。
立即试用合并 PDF
将两个或多个 PDF 文件合并为一个，拖动即可重新排序。免费使用，无每日任务限制、无需注册、无水印——文件在我们的服务器上安全处理并自动删除，绝不存储或出售。
立即试用压缩 PDF
用质量预设压缩 PDF 文件大小，便于邮件和表单上传。免费，无每日任务限制、无需注册、无水印；文件在我们的服务器上安全处理并自动删除。
立即试用PDF 签名
在任意 PDF 页面上添加手绘、键入或上传的签名，可多处放置。免费电子签名，无需账户、无水印；文件在我们的服务器上安全处理并自动删除。
立即试用常见问题
Drop the PDF onto this page — it renders instantly in your browser with zoom and continuous page scrolling. Works on Windows, Mac, Linux, iPhone and Android.
usageNo — the reader is fully client-side. Pages render in your browser and the file never leaves your device, which makes it safe for confidential documents.
privacyYes — zoom from 50% to 200% with the slider or buttons, and scroll continuously through all pages. The page count shows as soon as the document opens.
featuresThe reader is view-only, but Edit PDF, Annotate PDF and Sign PDF are one click away and pick up where the reader leaves off.
featuresYes — completely free with no signup. Since rendering happens on your device, there are no server limits at all.
pricingPDF Reader 如何助您完成任务
它每天都在解决真实的问题——服务企业、创作者和日常任务。找到适合您的用例，几秒即可开始。
Open a PDF on a Locked-Down Computer
On work or school machines where you can’t install software, the browser reader opens any PDF instantly — nothing to download or approve.
Read Confidential Files Without Uploading
Contracts, medical records and payslips render entirely on your device — a viewer you can trust precisely because nothing is uploaded.
Check a PDF Before Sending It
Give attachments a final page-by-page look — right order, right version, nothing missing — before they go to a client.
Read Handouts and Papers on Mobile
Zoom and continuous scroll make dense lecture notes and papers readable on a phone without a native app.