.ECW File Extension
File Type 1Enhanced Compression Wavelet Image
What is an ECW file?
Compressed image created in the Enhanced Compression Wavelet (ECW) format, which was developed by Earth Resource Mapping, but is now owned and maintained by ERDAS; stores an image designed for use with geospatial data.
ECW files are commonly used to store aerial and satellite map projection images. They support 1 to 8-bit continuous image data per layer up to 255 bands.
File Type 2EclipseCrossword Word List File
.ECW File Association 2
An ECW file contains a crossword created by EclipseCrossword, a program used to generate crossword puzzles. It contains a crossword puzzle, which includes each word with its clue and whether it is down or across. ECW files also include the title, author, copyright, and letter width and height of the puzzle.
You can open ECW files in EclipseCrossword. However, the program is only available for Windows. If you come across an ECW file in macOS you can open the ECW file with a text editor since the file is stored in plain text.