The X
extension name file type Classification
Y Amiga Yabba Compressed File Compressed file
Y Subsampled Raw YUV Image raster image file
Y Yacc Source File developer files
Y3A Yu-Gi-Oh! ONLINE 3 Avatar File game files
Y3D Yu-Gi-Oh! ONLINE 3 Deck File game files
Y4M YUV4MPEG2 Video File video file
YAB Yabasic Source Code developer files
YAL Arts & Letters Clipart Library vector image file
YAM Yahoo! Auctions Data data file
YAML YAML Document developer files
YAODL PowerFlip 3D Image File 3D image file
YBD YobiDrive Link File Other files
YBK Microsoft Encarta Yearbook File Other files
YBK YanCEyWare eBook eBook file
YCHAT Yahoo! Messenger Chat Log data file
YCM Yugioh Card Maker File game files
YDC Yu-Gi-Oh! Card Deck File game files
YDK Yu-Gi-Oh! Deck File game files
YDL PowerFlip YAODL 3D Image File 3D image file
YDR YouiDraw Drawing Project vector image file
YDR Yu-Gi-Oh! Power of Chaos Replay File game files
YDT Yu-Gi-Oh! Power of Chaos Data File game files
YENC yEnc File encoding file
YFS YSFLIGHT Mission File game files
YGF Y Graph Format File data file
YKA Yenka Model File data file
YKCOL Locky Ransomware Encrypted File encoding file
YM Atari ST Audio File audio file
YMG Yahoo! Messenger File Other files
YML YAML Document developer files
YML2 YML Script developer files
YMP YaST Metapackage File developer files
YNC yEnc Encoded File encoding file
YOG Outerra Captured Video File video file
YOOKOO Yookoo Player Playlist File audio file
YPR BYOB Project File developer files
YPS Yahoo! Messenger Data File Other files
YRCBCK YRC Backup Archive backup file
YRCBKM YRC Bookmarks Archive data file
YRCDAT YRC Software Data Script data file
YSP BYOB Sprite File raster image file
YTD Grand Theft Auto 5 Texture File game files
YTF Google Picasa Font Cache font file
YTT YouTube Timed Text File settings file
YUMTX YUM Transaction File data file
YUV YUV Encoded Image File raster image file
YUV YUV Video File video file
YZ YAC Compressed File Compressed file
YZ1 Yamazaki ZIPPER File Compressed file