Downloadable mobile applications for scanning any documents, photos, pictures, images, receipts, reports, books and any other content; Downloadable mobile applications for converting any document and any content into image files and/or PDF format files; Downloadable mobile applications for saving scanned files on smartphones, tablets, computers, and other devices; Downloadable mobile applications for easily sharing scanned files across different devices, APPs, platforms, and even clouds; Downloadable mobile applications for automatically detecting, adjusting and optimizing to generate high definition images and/or high definition PDF files; Downloadable mobile applications for scanning colored content, content with different grayscale, or black and white content; Downloadable mobile applications for generating scanned files with enhanced quality; Downloadable mobile applications for securing scanned files with password or fingerprint; Downloadable mobile applications for easily sorting, retrieving, syncing and managing scanned files; Downloadable mobile applications for supporting editing, marking, and electrically signing the scanned files