抽取文本,用与 iRead 应用完全相同的规则识别章节,装订成一本干净的 EPUB。Extracts the text, detects chapters with the same rules the iRead app uses, and binds a clean EPUB you can import anywhere.
在浏览器里完成 · 文件不会离开你的电脑Runs in your browser — the file never leaves your computer它把一个文字型 PDF 转换成 EPUB，用的是与 iRead 应用里完全相同的章节识别规则，所以转出来的书在应用里分章是一致的。
不会。整个转换在你当前这个浏览器标签页里完成——读取、抽取文本、识别章节、装订 EPUB，全部是本地 JavaScript。没有服务器参与，也就不存在「转换完记得删」这回事。你可以打开开发者工具的网络面板自己确认。
PDF 有两种：一种内部真的存着文字，另一种只是一沓图片。扫描书、拍照转的 PDF 属于后者，里面没有文本层可抽，转换会失败。这需要 OCR，而这个工具不做 OCR。
判断方法：用任意 PDF 阅读器打开，试着选中一段文字。能选中就是文字型，能转；选不中就是图片型，不能转。
PDF 把内容存成版式而不是流动文本。直接朗读会把分栏顺序、页眉页脚、脚注全混在一起，听起来是乱的。转成 EPUB 之后文本变成有序的章节流，朗读才成立。这也是 iRead 应用里 PDF 只能看不能读的原因。
转不了。带数字版权保护的文件无法被读取内容，这个工具不会去绕过它。
最省事的是 iRead 的 Wi-Fi 传书：手机上打开 iRead → 导入 → 从电脑导入，在电脑浏览器里打开手机屏幕上显示的地址，输入四位码，把 EPUB 拖进去。不用数据线，也不经过任何云端。上面「直接传到手机」那一栏有详细步骤。
转出的是标准 EPUB，导入其它阅读器同样可以。
It turns a text-based PDF into an EPUB, using the same chapter-detection rules as the iRead app — so a book converted here splits into the same chapters once you open it in the app.
No. The whole conversion happens in this browser tab — reading, text extraction, chapter detection and EPUB binding are all local JavaScript. No server is involved, so there is nothing to “remember to delete” afterwards. You can confirm it yourself in your browser's network inspector.
There are two kinds of PDF: ones that genuinely store text, and ones that are just a stack of images. Scanned books and photographed pages are the second kind — there is no text layer to extract, so conversion fails. Getting text out of those needs OCR, which this tool does not do.
A quick test: open the PDF in any reader and try to select a sentence. If you can select it, it is text-based and will convert. If you cannot, it is images and will not.
A PDF stores its content as layout rather than flowing text. Narrating one directly jumbles column order and mixes headers, footers and footnotes into the body — it does not make sense as audio. Converting to EPUB turns the content into an ordered stream of chapters, which narration can follow. That is also why PDFs are read-only in the iRead app.
They cannot be converted. Files with digital rights protection cannot have their contents read, and this tool does not attempt to work around that.
The easiest route is iRead's Wi-Fi import: on the phone open iRead → Import → From computer, open the address shown on the phone in your computer's browser, enter the four-character code, and drop the EPUB in. No cable, and nothing passes through a cloud service. Step-by-step instructions are in the “Send it straight to your phone” section above.
The output is a standard EPUB, so it imports into other readers just as well.