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开源数据提取工具，专为从复杂的 PDF 文档、网页和电子书中高效提取内容而设计，它能将含有图片、公式和表格的多模态文档精确转换为 Markdown 等格式，支持多种平台和176种语言，是学术、财务、法律等领域的理想选择。
Smallpdf - the platform that makes it super easy to convert and edit all your PDF files. Solving all your PDF problems in one place - and yes, free.
HiPDF is a web application that easily edits, converts and organize PDFs while keeping data safe and secure, processing tens of millions of files cumulatively.
免费多功能的在线免费PDF转换器、PDF编辑、PDF文件处理工具。
Free set of online tools for handling PDF files. Convert and edit your PDF files with incredible ease and speed!
超级PDF免费为您提供简单强大的PDF在线处理工具，文件3小时自动删除
