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After ages I have decided to optimize the images on my store, to do so I have download the media folder and compressed all the images with Caesium leaving the original folder structure.
The first run left the extension unchanged, I have obtained a good file size reduction, but I have also tried to change the extension to see if any improvements can be obtained(if the size is bigger than the original, then the image is skipped): the result was a further reduction of 44Mb.

Now my problem/doubt is how can I upload back all the images and register the extension change? My first guess is to edit the table that stores these information, but I have no idea how the Magento framework store/manage these data. Is it better to avoid this kind of procedure?

  • If the images name are same then my guess is just uploading those back to media folder will work. By the way is it Magento1 or Magento2. – Kingshuk Deb Apr 11 '17 at 6:47
  • @KingshukDeb Sorry, I have added the tag for magento 1.9, the image management works independently from the extension of the image? – Razorphyn Apr 11 '17 at 6:49
  • If names are still same then just put the media folder back. You dont have to do any changes in db. – Kingshuk Deb Apr 11 '17 at 6:52
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Magento stores images in the catalog_product_entity_media_gallery table. The value field should have your image name.
You can just run the query

UPDATE `catalog_product_entity_media_gallery`
SET
    value = REPLACE(value, '.old_ext', '.new_ext')

but please backup first.

  • You surely know better but does he need to run this query if all images name are unchanged. – Kingshuk Deb Apr 11 '17 at 7:00
  • from what I understood the file extension was changed. If I understood wrong, then the query is not needed. – Marius Apr 11 '17 at 7:01

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