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DWG (CAD)
| File extension | .dwg |
| Category | CAD File |
| Description | The .dwg file extension stands for drawing. One of the oldest file types, it was initially conceived in the 1970s for use with the early Computer Aided Design (CAD) devices for 2D and 3D drawings. The DWG format is licensed to Autodesk for their AutoCAD application which is the de facto standard for CAD drawings. Autodesk have robustly resisted attempts to reverse engineer the DWG format by other freeware applications building watermark protection into certain versions. The DWG files created by CAD applications are used industrially by architects, engineers and designers. |
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| Technical Details | A .DWG file is a binary file that contains vector image data and metadata. The vector image data provides instructions to the CAD application about how to display the DWG on screen. The metadata may contain a variety of information on the file including location specific data and also client data. Files created using AutoCAD 14 also have a file verification checksum included, which validates that the file was created using AutoCAD. |
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| Developed by | Autodesk |
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PNG (Image)
| File extension | .png |
| Category | Image File |
| Description | PNG pronounced ping is a format for storing bitmapped (raster) images on computers. It was created originally to replace the GIF file format when it was announced that the companies who created the GIF format wanted royalties. PNG uses indexed colors and lossless compression (like a .GIF file), but without those copyright limitations; it cannot be animated like a GIF image. |
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| Technical Details | PNG images are in many ways better than .GIF as they also include an 8-bit transparency channel, which allows the colors in the image to fade from opaque to transparent; GIF images only support fully opaque or fully transparent pixels. PNG supports palettes of 24-bit RGB colors, RGB images or greyscale or RGB images. PNG was intended to be able to transfer images on the Internet, not professional graphics, and so does not support other colour spaces (such as CMYK). |
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| Developed by | PNG Development Group |
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Convert DWG file
Using Zamzar it is possible to convert DWG files to a variety of other formats
- dwg to bmp (Windows bitmap)
- dwg to gif (Compuserve graphics interchange)
- dwg to jpg (JPEG compliant image)
- dwg to pdf (Portable Document Format)
- dwg to png (Portable Network Graphic)
- dwg to tiff (Tagged image file format)