https://bugs.kde.org/show_bug.cgi?id=357522
--- Comment #2 from fuc...@ukr.net --- When you look through you images, you sometimes want to change rotation (e.g. scanned landscape document). This process is very simple with Gwenview: make your changes and press "Save" button. But there is a big problem with images in TIF format. Black and white (binary) image in TIFF-format with LZW compression has a very small size. This is preferred format for scanning documents, because a disk space is saving tremendously. But Gwenview ignores the compression type of original TIFF-image and save this file type without any compression at all. Here is mediainfo output: (I've not found <monospace> tag, sorry) $ mediainfo ./* General Complete name : ./OriginalWithLZW.tif Format : TIFF File size : 52.5 KiB Image Format : LZW Width : 3 508 pixels Height : 4 960 pixels Color space : Y Bit depth : 1 bit Compression mode : Lossless General Complete name : ./SavedByGwenview.tif Format : TIFF File size : 2.08 MiB Image Format : Raw Width : 3 508 pixels Height : 4 960 pixels Color space : Y Bit depth : 1 bit Compression mode : Lossless Reproducible: Always Steps to Reproduce: 1. Open a TIFF-file. 2. Save this file as TIFF-image with alternative name (or change something (e.g. rotation) and save the changes). Actual Results: Check the size of new image -- it's huge!!! Expected Results: Ideally files that are being edited should be saved with preserved compression type (and even compression ratio (e.g. for JPEG format)). -- You are receiving this mail because: You are watching all bug changes.
