在线转换任何文件格式 - 免费且安全

上传文件开始转换，支持本地文件上传或远程链接导入

${shortenFileName(item.file_name)} ${formatBytes(item.file_size)}

输出格式：

已上传 ${items.length} 个文件

Convert

如何将Jpg文件转换为PDF？

点击「选择JPG文件」按钮上传您的源文件
点击「立即转换」启动智能转码流程
状态显示「转换完成」后，点击「下载PDF」获取文件

全场景JPG to PDF格式兼容转换

本工具支持将多种类型的 Jpg 转换为 PDF。可将 PNG, TIFF, GIF, BMP, ICO, WEBP, SVG, PDF, EPS, PSD 转换为 PDF。

行业领先的Jpg格式转换专家

智能优化算法保障Jpg转换质量，支持批量处理与自定义分辨率/码率/帧率设置

零成本·军工级安全

基于浏览器即点即用，采用金融级256位SSL加密传输，所有文件72分钟后自动焚毁

What is a JPG file?

JPG (or JPEG, short for Joint Photographic Experts Group) is a widely used image format that employs lossy compression to significantly reduce file size while maintaining good image quality. Due to its high compression efficiency, JPG is commonly used in digital photography, web images, social media, and email attachments. The format supports 24-bit color depth, allowing rich color representation, but repeated editing and saving may result in quality degradation due to compression artifacts. JPG files are compatible with most devices and software. Recommended viewers and editors include [Adobe Photoshop](https://www.adobe.com/products/photoshop.html) and [GIMP](https://www.gimp.org/), while [ImageMagick](https://imagemagick.org/) is a great tool for format conversion and batch processing.

How to open and edit a JPG file?

JPG files can be opened on almost any operating system and device. Here are some recommended tools: - **Viewers and Editors**: - [Adobe Photoshop](https://www.adobe.com/products/photoshop.html): A professional image editing software that supports JPG and various other formats, ideal for image processing and optimization. - [GIMP](https://www.gimp.org/): A powerful open-source image editor, a great alternative to Photoshop for basic image editing. - Others: Windows Paint, Mac Preview, and built-in photo viewers on smartphones and tablets also support opening JPG files. - **Conversion Tools**: - [ImageMagick](https://imagemagick.org/): A cross-platform command-line tool for JPG format conversion, batch editing, and optimization. - Online converters such as CloudConvert and Zamzar allow quick conversion between JPG, PNG, TIFF, WEBP, and other formats. Whether you're a casual user or a professional designer, opening and editing JPG files is straightforward. For lossless editing, consider saving images in TIFF or PNG format to prevent quality loss from compression.

开发团队： Joint Photographic Experts Group
首发时间： 1992
相关链接：

https://en.wikipedia.org/wiki/JPEG

https://www.adobe.com/products/photoshop.html

https://www.gimp.org/

https://imagemagick.org/script/formats.php

What is a PDF file?

PDF (Portable Document Format) is a file format developed by Adobe Systems for saving and transmitting documents, preserving the original formatting across different platforms. PDF files support text, images, links, form fields, video, and audio elements, making them suitable for e-books, reports, contracts, and various types of documents. Compared to traditional document formats, PDF offers better cross-platform compatibility and security, ensuring consistent viewing and printing on any device.

How to open and edit a PDF file?

PDF files can be opened and edited using various tools. The most popular choices include: - PDF readers: [Adobe Acrobat Reader](https://get.adobe.com/reader/) (officially recommended, supported on multiple operating systems), [Foxit Reader](https://www.foxitsoftware.com/pdf-reader/) (lightweight and feature-rich) - Online tools: [Smallpdf](https://smallpdf.com/), [ILovePDF](https://www.ilovepdf.com/) (online conversion and editing tools) Regardless of the tool you choose, the process is straightforward: simply double-click the file or right-click and select 'Open'. If you need to convert a PDF file to another format, many tools provide powerful conversion features, such as converting PDFs to DOCX, JPEG, etc., through Smallpdf or ILovePDF. Additionally, some tools offer editing capabilities like adding annotations, filling out forms, and signing PDFs. For PDF files containing sensitive information, ensure you use encryption features to protect the file. Steps are as follows: 1. Use a tool that supports encryption (such as Adobe Acrobat Pro or Foxit PhantomPDF). 2. Open the file and select 'File' > 'Protect' > 'Encrypt'. 3. Set a password and choose encryption options.