ECW is a proprietary Wavelet compression format optimized for aerial and satellite images developed by Earth Resource Mapping, but now owned by ERDAS. ECW file can hold data gathered with satellite or aerial cameras and georadars located in space.
Files with .SID extension store multidimensional image database. SID file store large raster image with geographical coordinates. MrSID (sometimes pronounced as Mister Sid) is an acronym for multiresolution seamless image database.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the ECW file after converting to SID may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from ECW to SID to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting ECW to SID does not meet your expectations, you can simply try to find on the Internet a different version of your file in ECW format, properly converted to a SID file by someone else. If this fails, use the information provided in the further part of the website.
If after converting the file ECW the desired result was not achieved, you can try to change the format of ECW file to other than SID. On our website you will find more information on the following conversion options
Unfortunately, if after performing the two previously described steps (trying to find your ECW file converted by someone else, and the attempt to convert it to SID on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the ECW file in its original format (without conversion to SID file). Such a solution will be difficult to implement, but it certainly will give the best result.