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Using a dash or underscores in file names.
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Is it better to use a dash or an underscore in file names to improve SEO? EX memory_flash.jpg or memory-flash.jpg
Or does it make no difference?
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In the end it wouldn't matter that much but I would also prefer using dashes as well.
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https://support.google.com/webmasters/answer/76329?hl=en
Use dashes. Underscores don't specify any specific function whereas dashes are specifically word separators.
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