Can Reddit Mods See Who Downvoted

• As others here have stated, you won't be able to see who downvoted on submissions to your community but if you find someone is mass downvoting, reach out via r/reddit.com modmail and include a few examples so the team who deals with such issues can look into it.
• The site takes data from Reddit itself and finds the posts that have been downvoted to oblivion. 'Typically, what happens with content that users don't want to see is apathy,' Horace told Gizmodo.
• The report button, shown on all posts and comments when you're logged in, is an anonymous way to alert a community's moderators to something that violates the community rules or Reddit's Content Policy. Use this button to report any content you feel is violating community standards or to flag it to admins for violating site-wide rules.

As the above answer state, you cannot tell who is downvoting your Reddit posts. Best advice would be to learn what the individual subreddits like, post on them for approval, and then post a picture of your high karma despite the hater who is blanket downvoting you.

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Healthy communities have agreed upon clear, concise, and consistent guidelines for participation. These guidelines are flexible enough to allow for some deviation and are updated when needed. Secret Guidelines aren't fair to your users—transparency is important to the platform.

Healthy communities have moderators who are around to answer questions of their community and engage with the admins.

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Healthy communities allow for appropriate discussion (and appeal) of moderator actions. Appeals to your actions should be taken seriously. Moderator responses to appeals by their users should be consistent, germane to the issue raised and work through education, not punishment.

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We know management of multiple communities can be difficult, but we expect you to manage communities as isolated communities and not use a breach of one set of community rules to ban a user from another community. In addition, camping or sitting on communities for long periods of time for the sake of holding onto them is prohibited.

Can Reddit Mods See Who Downvoted

Reddit may, at its discretion, intervene to take control of a community when it believes it in the best interest of the community or the website. This should happen rarely (e.g., a top moderator abandons a thriving community), but when it does, our goal is to keep the platform alive and vibrant, as well as to ensure your community can reach people interested in that community. Finally, when the admins contact you, we ask that you respond within a reasonable amount of time.

See Who Downvoted Reddit

Where moderators consistently are in violation of these guidelines, Reddit may step in with actions to heal the issues - sometimes pure education of the moderator will do, but these actions could potentially include dropping you down the moderator list, removing moderator status, prevention of future moderation rights, as well as account deletion. We hope permanent actions will never become necessary.