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PDF 指南 与操作教程

Edit any PDF onlinewithout uploading it

Change text in its own font, sign a page and type on a form, right in your browser - no detour through Word, and your file never leaves your computer.

PDF 基础 指南

PDF 到底是什么、该用哪个工具，以及人们打开文件前常犯的错误。

A PDF page on a dark field with a warning triangle over it, standing for a document that prints badly
PDF 基础

Why PDFs print wrong

Why Your PDF Prints Wrong: Margins, Scaling and Extra Blank Pages

The file looks right on screen and comes out wrong on paper: an edge cut off, everything a few per cent small, a blank sheet at the end. Four things cause it, and all four are decided before the job reaches the printer.

10 min read阅读指南
A blue DOC file with an arrow pointing to a red PDF file, showing a document converted before it is sent
PDF 基础

PDF or Word?

PDF or Word: Which File Should You Actually Send?

You are about to attach a file and you do not know which format the other person expects. The answer follows from one difference: a Word file is instructions for building a page, and a PDF is the page. Here is what to send for a CV, a contract, an invoice and the rest.

10 min read阅读指南
Three PDF pages side by side with a tick, illustrating how to choose the right PDF tool
PDF 基础

Choosing a PDF tool

Which PDF tool to use

Split or Organize? PDF to Word, or leave it as a PDF? A short decision guide for the cases people get wrong.

2 min read阅读指南

每个工具都有一篇指南

每个工具做什么、什么时候用它，以及上传任何文件前值得了解的设置。