Haimc海明创
About StayFile.关于 StayFile。
StayFile is a small set of free PDF tools that run in the browser. Haimc (海明创) publishes it. The file you open is not uploaded.StayFile 是一小套在浏览器里运行的免费 PDF 工具。海明创（Haimc）发布它。你打开的文件不会被上传。
Who it is for
给谁用
It is for someone who needs to combine a few PDFs, pull out pages, make a scan smaller, or put photos into one PDF, and who does not want to hand the file to a website to do it. You do not create an account. There is nothing to sign in to.
它给这样的人用：需要把几份 PDF 合起来、抽出几页、把扫描件变小，或把照片放进一个 PDF，又不想把文件交给某个网站去做。不用注册账号。没有登录。
What the four tools do
四个工具做什么
Merge copies pages from the PDFs you list, in that order, into one new file. Split either saves every page as its own PDF inside a zip, or copies the page numbers you type into one PDF. Compress redraws each page as a JPEG at a high, medium, or low setting. Images to PDF puts one JPEG, PNG, or WebP on each page.
合并按你排列的顺序，把各份 PDF 的页面复制进一个新文件。拆分可以把每一页存成压缩包里的单独 PDF，也可以按你写的页码复制进一个 PDF。压缩按高、中、低三档把每一页重画成 JPEG。图片转 PDF 让每一页放一张 JPEG、PNG 或 WebP。
What it is not
它不是什么
- Not a browser extension, and not a paid PDF product. If you use a separate local-PDF extension, that product is separate. This site does not unlock it, bill for it, or exchange files with it.
- 不是浏览器扩展，也不是付费的 PDF 产品。如果你另有一个本地 PDF 扩展，那是另一个产品。本站不会解锁它、向它收费，或和它交换文件。
- Not a text editor, an OCR engine, or a signature tool. Compress turns pages into pictures, so text in that download cannot be selected.
- 不是文字编辑器，不是 OCR，也不是签名工具。压缩会把页面变成图片，因此那份下载里的文字无法选中。
- Not a place that stores your documents. Closing the tab discards the bytes the tool was holding.
- 不是存放你文档的地方。关掉标签页，工具持有的字节就被丢掉。
Read the limits on the tool you are using. Password-protected PDFs are refused. The originals on your disk are not modified.
请阅读你正在用的那个工具上的限制。有密码的 PDF 会被拒绝。磁盘上的原件不会被修改。