🖼️ TIFF 转 JPG（支持多页）TIFF to JPG Converter
把 TIFF/TIF 图片（扫描件、传真、相机和印刷文件）转换为 JPG：多页 TIFF 会拆成每页一张，支持 LZW、Deflate、PackBits、JPEG、CCITT 传真压缩和 16 位图像，可调质量，多张打包 ZIP，本地处理。Convert TIFF/TIF images — scans, faxes, camera and print files — to JPG. Multi-page TIFFs are split into one JPG per page; LZW, Deflate, PackBits, JPEG, CCITT fax compression and 16-bit images are supported, with adjustable quality and ZIP download. Processed locally.
使用说明与常见问题How-to & FAQ
「TIFF 转 JPG（支持多页）」是什么？What is the TIFF to JPG Converter tool?
把 TIFF/TIF 图片（扫描件、传真、相机和印刷文件）转换为 JPG：多页 TIFF 会拆成每页一张，支持 LZW、Deflate、PackBits、JPEG、CCITT 传真压缩和 16 位图像，可调质量，多张打包 ZIP，本地处理。Convert TIFF/TIF images — scans, faxes, camera and print files — to JPG. Multi-page TIFFs are split into one JPG per page; LZW, Deflate, PackBits, JPEG, CCITT fax compression and 16-bit images are supported, with adjustable quality and ZIP download. Processed locally.
如何使用「TIFF 转 JPG（支持多页）」？How do I use the TIFF to JPG Converter tool?
在「TIFF 转 JPG（支持多页）」中，按需设置「质量」、「透明处背景色」等选项，然后点击「全部下载（ZIP）」按钮即可。支持拖放文件。In the TIFF to JPG Converter: Set "Quality", "Background for transparency", then click "Download all (ZIP)". Drag-and-drop files is supported.
多页 TIFF 怎么处理？How are multi-page TIFFs handled?
每一页单独转换成一张 JPG，文件名为“原名-p1.jpg、-p2.jpg …”，一次最多 50 页（超出时会提示还有几页没有转换），可用“全部下载（ZIP）”打包。单个 TIFF 文件最大 200 MB。如果想把所有页放进一个文件，请用 TIFF 转 PDF。Each page becomes its own JPG named name-p1.jpg, -p2.jpg and so on, up to 50 pages at a time (a message says how many pages were left over), and Download all (ZIP) bundles them. Each TIFF file can be up to 200 MB. To keep all pages in one file, use TIFF to PDF.
支持哪些 TIFF？Which TIFFs are supported?
使用开源 UTIF.js（MIT）解码，支持无压缩、LZW、Deflate/ZIP、PackBits、JPEG 压缩和 CCITT G3/G4 传真压缩，黑白、灰度、RGB、CMYK 和 16 位图像会转换为 8 位 sRGB。JPEG 压缩的 TIFF 由浏览器自带的 JPEG 解码器解码。文件被截断、某页无法解码或 LZW 数据损坏时，会在结果下方说明是哪一页。Decoding uses the open-source UTIF.js (MIT): uncompressed, LZW, Deflate/ZIP, PackBits, JPEG and CCITT G3/G4 fax compression; black-and-white, greyscale, RGB, CMYK and 16-bit images are converted to 8-bit sRGB. JPEG-compressed TIFFs are decoded with the browser's own JPEG decoder. If the file is truncated, a page cannot be decoded or LZW data is damaged, a message under the results names the page.
转换后文件会变小吗？Will the files get smaller?
通常会小很多。扫描和印刷用的 TIFF 往往不压缩或无损压缩，转成质量 90 的 JPG 通常会小很多（具体比例取决于图片内容，照片和扫描件一般缩小明显），适合发邮件和上传。质量 100 的损失最小，但 JPG 始终是有损格式；文字扫描件需要无损保存时，请改用 TIFF 转 PDF。Usually much smaller. Scan and print TIFFs are often uncompressed or losslessly compressed, so JPG at quality 90 is usually much smaller (the saving depends on the image; photos and scans usually shrink a lot) — good for email and uploads. Quality 100 loses the least, but JPG is always lossy; for text scans that must stay lossless, use TIFF to PDF.
文件会上传吗？Are files uploaded?
不会，TIFF 在浏览器里解码，再用 Canvas 编码为 JPG，文件不会离开你的设备。No. The TIFF is decoded in your browser and re-encoded to JPG with Canvas; files never leave your device.
「TIFF 转 JPG（支持多页）」免费吗？需要注册吗？Is the TIFF to JPG Converter free? Do I need an account?
「TIFF 转 JPG（支持多页）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The TIFF to JPG Converter is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.