Use hash of original images to check for duplicate uploads #776

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opened 2026-10-05 00:16:53 +02:00 by adam · 3 comments

adam commented 2026-10-05 00:16:53 +02:00

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It appears I am allowed to upload duplicate photos. I was hoping Piwigo would check for duplicates, but it seems it does not. I think one way to do this, as Mediawiki does, is to create a hash for the original image. Then for every image put into the upload queue, create a hash and check if that hash exists in the array of existing hashes.

I believe I'm using Piwigo version 2.7.4. Note this is a "one-click install" on a shared Dreamhost server.

It appears I am allowed to upload duplicate photos. I was hoping Piwigo would check for duplicates, but it seems it does not. I think one way to do this, as Mediawiki does, is to create a hash for the original image. Then for every image put into the upload queue, create a hash and check if that hash exists in the array of existing hashes. I believe I'm using Piwigo version 2.7.4. Note this is a "one-click install" on a shared Dreamhost server. <!-- github-sync-id:314478677 -->

adam closed this issue 2026-10-05 00:16:53 +02:00

adam commented 2026-10-05 00:16:54 +02:00

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The relevant checksum already exists, it just needs to be checked at upload time.

But maybe it's enough that one can search for duplicates after upload? That's already built into the batch manager.

The relevant checksum already exists, it just needs to be checked at upload time. But maybe it's enough that one can search for duplicates after upload? That's already built into the batch manager. <!-- github-comment-id:412039131 -->

adam commented 2026-10-05 00:16:55 +02:00

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A slightly related tweak: #910

A slightly related tweak: #910 <!-- github-comment-id:412046080 -->

adam commented 2026-10-05 00:16:56 +02:00

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Don't know yet how to implement that, but a quick action to avoid duplicates at upload, or remove them right after upload, would be useful.

Don't know yet how to implement that, but a quick action to avoid duplicates at upload, or remove them right after upload, would be useful. <!-- github-comment-id:529914722 -->

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Reference: adam/Piwigo#776