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用关键字生成手机幻灯片 create awesome interactive content on your smartphone - no design skills or coding are needed

免费且开源的文件对比比较和合并工具 WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.

从 PDF 文件中提取图像和文字 Get Images, Text or Fonts out of a PDF File with this free online service. No installation or registration necessary.