diff --git a/Extend Features.md b/Extend Features.md
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-# Extract metadata from uploaded files
-
-Install Imagemagick
-Install optional requirements
-
-
diff --git a/Extend-Features.md b/Extend-Features.md
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+# Extract metadata from uploaded files
+
+For extracting cover pictures from uploaded books the library "Imagemagick" has to be installed. The project website lists how to install binary releases for OS-X and windows: https://imagemagick.org/script/download.php. For Linux it's recommended to use the imagamagick version of your distro. (For Debian/Ubuntu/Linux Mint: `sudo apt install imagemagick`).
+Extracting metadata from fb2 or epub files needs additional dependencies from optional-requirements.txt. In the optional-requirements.txt there are different blocks for the different options. Install the relevant requirements via pip/pip3. 
+
+
+