I submitted figures to the journal and they informed me that the quality was poor and that the figures must be in vector scale. What does this mean if I have only images?

Also, do these guidelines imply that the image must either be 8.5 inches by 11 inches or 7791 pixels by 4724 pixels?

Width = 8.5 inches OR Width = 7791px (In-between) Height = 11 inches OR Height = 4724px (In-between) Pixels/Centimeter = 300 (DPI) (minimum)

Here are the requirements according to the journal:

  1. Figures required in vector scale
  2. Halftone image type (continuoustone photograph containing no text ) should have the preferred file format TIFF, with color mode being RGB or Grayscale, in a resolution of 300dpi, and Combination image type (image containing halftone, text, or line art elements )should have a resolution of 500-900 dpi.
  3. Format & Resolution: The following file formats can be
    accepted (our preference in order of appearance) : PDF, PPT,MS Word, Excel, PNG, CDR, IA, EPS, TIFF, JPG

Thank you for your help!

  • What are your figures? How did you generate these images? Vector format means instead of pixels, you have geometric forms (circles, squares, etc... though these can be very complex). Vector images are usually generated in Adobe Illustrator or other similar software. If the figures in question are charts from data, you can export vector images of the charts from both Excel and LibreOffice. It would be useful to know what your workflow is. Commented Jun 27 at 13:49
  • Side note: DPI means Pixels per Inch, not Pixels per Centimeter. (300 dpi is approx 118 pixels per cm). Can you post the exact text of the specs you were given? Commented Jun 27 at 13:50
  • Thanks for the added info, how are you generating your images? Commented Jun 27 at 14:11
  • 1
    From what I have found, you should be able to generate a PNG with the required size and resolution (300 dpi) with that software. Not that the workaround given to change the size and resolution in Photoshop or GIMP only really works if you do not add pixels to the image Commented Jun 27 at 14:18
  • 2
    To be honest, I think the writer of the spec was not very knowledgable about typical graphic file formats or technology; it's also possible that this is somehow a translation issue if the original language wasn't English. Commented Jun 27 at 15:18

1 Answer 1


Honestly, whoever gave you the specs is adding to the confusion.

"Vector scale" probably means vector format, and these are vector formats: AI, EPS, PDF, SVG, CDR.

These are not vector formats: JPG, PNG, TIFF.

Also, be aware vector files can include non-vector elements, e.g. a PDF file can contain a non-vector photo, but that's optional and may not be the scope of your issue.

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