博客 · 第 2 页
处理 PDF 文件的指南和技巧。
How to Compress a PDF to 500 KB, Even With Many Pages (Free)
A 500 KB limit sounds generous until your PDF has ten scanned pages. Here is how to compress a PDF to 500 KB in one step, plan the size per page, and fix files that will not shrink.
2026年10月14日 · 阅读约 5 分钟
How to Compress a PDF to 300 KB (Free, Exact Target Size)
Upload forms often cap PDFs at 300 KB. Here is how to compress a PDF to 300 KB in one step, keep it readable, and what to do when a file will not shrink far enough.
2026年10月13日 · 阅读约 5 分钟
How to Increase PDF Size to 100 KB, 200 KB or More (Free)
Some upload portals reject a PDF that is too small. Here is how to increase PDF size to 100 KB, 200 KB, 500 KB or 1 MB for free, without changing a single page, and without uploading the file.
2026年10月13日 · 阅读约 5 分钟
How to Save a Web Page or Link as a PDF (Any Browser or Phone)
Save a web page as a PDF with the print dialog in any browser, on iPhone or Android, or by pasting the link into a free URL to PDF converter. Plus fixes for cut-off text, missing images and cookie banners.
2026年10月12日 · 阅读约 5 分钟
How to Convert HEIC to PDF on iPhone, Windows and Mac
iPhone photos are saved as HEIC, which many forms and Windows PCs reject. Here is how to turn one or many HEIC photos into a single PDF on any device, for free and without uploading them.
2026年10月9日 · 阅读约 5 分钟
How to Convert PDF to JPG on Any Device (Free, No Upload)
Turn every page of a PDF into a JPG image in seconds: in your browser without uploading, with Preview on a Mac, or on Windows. Plus the right resolution, single pages, and JPGs under 50 KB for exam and job portals.
2026年10月9日 · 阅读约 5 分钟
How to Change PDF Orientation: Landscape to Portrait and Back
Turning a PDF from landscape to portrait can mean two different things: rotating the page, or putting the same content on an upright sheet. Here is how to do both for free, page by page or for the whole file.
2026年10月8日 · 阅读约 5 分钟
How to Make a PDF Searchable (Free OCR, No Upload Needed)
A scanned PDF is just a picture of text, so Ctrl+F finds nothing. Here is how to make a PDF searchable with OCR, for free and without uploading it, plus the settings that decide how accurate the text will be.
2026年10月7日 · 阅读约 6 分钟
How to Redact a PDF Properly (Free, No Upload Needed)
A black box is not a redaction. Learn how to redact a PDF so names, numbers and addresses are permanently removed, how to check that nothing leaks, and how to do it free in your browser without uploading the file.
2026年10月6日 · 阅读约 5 分钟
How to Merge PDF Files
Merge multiple PDF files into a single document with free online Merge PDF tool. No signup needed, quick, secure and easy. Start combining your documents today.
2026年1月12日 · 阅读约 3 分钟
How to Split PDF Files
Split PDF files into individual pages or sections with free Split PDF online tool Quick, secure, no signup needed. Tailor PDFs to your needs. Start now!
2026年1月12日 · 阅读约 3 分钟
How to Compress PDF Files
Shrink PDF files online effortlessly with WoowPDF! Free, fast, and secure compression without sacrificing quality. No registration needed. Optimize your PDFs now!
2026年1月12日 · 阅读约 2 分钟
WoowPDF 博客介绍如何完成日常的 PDF 工作：在 PDF 与其他格式之间转换文件，合并和拆分文档，压缩大文件以便通过邮件发送，加密或解锁 PDF，以及修复无法打开的文件。每篇指南都会结合我们的免费在线工具逐步讲解，无需注册，不加水印。文章以英文撰写。