HDR file (HDR) stores data in the HDR format. LIT file (LIT) stores data in the LIT format. This reformats the fixed-layout document into a reflowable ebook that adapts to screen size. Metadata such as creation date and embedded colour profiles is preserved where the target format supports it. The result is a standard LIT file readable by any compatible application. 1converter handles HDR-to-LIT conversion server-side: files are uploaded over HTTPS, processed on isolated cloud infrastructure, and the converted output is available for download for 24 hours before automatic deletion. No account is required for standard conversions.