Convert PDF files online
|#||Output File||Source File||Action|
1. Click "Choose Files" button to select multiple files on your computer. You can also click the dropdown button to choose online file from URL, Google Drive or Dropbox.
2. Choose target format. You can convert all kinds of documents and images to PDF file or convert PDF file to DOC, DOCX, XLS, XLSX, PPT, PPTX, XML, CSV, ODT, ODS, ODP, HTML, TXT, RTF, SWF, PNG, JPG, TIFF, BMP, PCX, PNM and PSD.
3. Click "Convert Now!" button to start batch conversion. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.
Compare PNG with DDS:
|Full name||Portable Network Graphics||Microsoft Direct Draw Surface|
|Developed by||PNG Development Group||Microsoft|
|Type of format||lossless bitmap image format||texture files|
|Introduction||Portable Network Graphics (PNG) is a raster graphics file format that supports lossless data compression. PNG was created as an improved, non-patented replacement for Graphics Interchange Format (GIF), and is the most used lossless image compression format on the Internet. PNG itself does not support animation at all. MNG is an extension to PNG that does; it was designed by members of the PNG Group.||The DirectDraw Surface container file format (uses the filename extension DDS), is a Microsoft format for storing data compressed with the proprietary S3 Texture Compression (S3TC) algorithm, which can be decompressed in hardware by GPUs.|
|Technical details||PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without alpha channel), and full-color non-palette-based RGB[A] images (with or without alpha channel). PNG was designed for transferring images on the Internet, not for professional-quality print graphics, and therefore does not support non-RGB color spaces such as CMYK.||The DirectDraw Surface format is useful for storing graphical textures and cubic environment maps as a data file, both compressed and uncompressed. The Microsoft Windows file extension for this data format is '.dds'.|
|Associated programs||Adobe Photoshop, Paint Shop Pro, the GIMP, GraphicConverter, Helicon Filter, ImageMagick, Inkscape, IrfanView, Pixel image editor, Paint.NET, Xara Photo & Graphic Designer.||Adobe Photoshop|
|Wiki||PNG on Wikipedia||DDS on Wikipedia|