Previously, LyX worked perfectly with the images in the final output PDF being in lovely and perfect vector form.

However, I recently formatted my hard disk and reinstalled LyX. I then tried outputting a PDF file, from the exact same LyX and EMF files. However, now the images in the output PDF are rasterized/pixelized/fuzzy.

Not surprisingly, I prefer the first version (vector). Please let me know what I should do to fix this.

I have tried fiddling with the EMF to EPS converter settings but these haven't worked. What I've tried:

Under Tools > Preferences > File Handling > Converters > Enhanced Metafile -> EPS:

  • Changed "convert" to "magick".
  • Remove "-density 300".
  • Unchecking the "Converter File Cache" "Enabled" box.

How these EMF files were produced. I draw my graphs in Microsoft Excel first. I select the graph, copy (Ctrl+C), then paste (Ctrl+V) into LyX. LyX then converted these into EMF files (which were saved in the same folder as the LyX file). So these EMF files were from before I formatted my hard disk (I don't know if that matters). (When formatting my HD I backed up my files on an external HD and now I've copied them back.)


LyX can detect the following programs that can be used to automatically convert your EMF files to EPS or PDF and preserve them as a vector format: metafile2eps, wmf2eps, and inkscape. If you have one of those installed, go to Tools > Reconfigure and LyX should detect it and use it. If it is still producing a raster image in the final PDF output, I suggest just converting the EMF files manually using one of the programs listed above.

In the future, I would suggest to never using EMF files, and to use formats such as EPS or PDF instead.

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