Image resizing and watermarking do no take into consideration the relative dimensions of the watermark and watermarked image.

[janssentwh]

Introduction

In Magento 2.3.3 it is possible to upload watermarks. By doing so your product images are watermarked indeed. But, when uploading product images of different sizes, the watermark's size is altered relative to the product image. These images below better illustrate my point:
Small base product image:

Large base product image:

Reproduced in Luma 2.3-develop:

Preconditions (*)

The issue is reproducible in Magento 2.3.3

Steps to reproduce (*)

1. Create two products.
2. Give one product an image of size 400x400.
3. Give the second product an image of size 1200x1200.
4. Add a watermark with width 200px.
5. Refresh image cache.
6. Generate cached images by visiting the product's product detail page.
7. Notice that the watermarks are not of equal size.

Expected result (*)

1. I expect the watermark to take into consideration the relative size of the image, so that the watermark always is the same width and height regardless of the product image.

Actual result (*)

1. The smaller product image gets a larger watermark, the larger product image gets a smaller watermark.

[m2-assistant]

Hi @janssentwh. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@janssentwh do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

---

• Join Magento Community Engineering Slack and ask your questions in #github channel.

[janssentwh]

@magento give me 2.3-develop instance

[magento-engcom-team]

Hi @janssentwh. Thank you for your request. I'm working on Magento 2.3-develop instance for you

[magento-engcom-team]

Hi @janssentwh, here is your Magento instance.
Admin access: https://i-25514-2-3-develop.instances.magento-community.engineering/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.

[VladimirZaets]

Hi @janssentwh. Thank you for your report.
The issue has been fixed in #25528 by @Krielkip in 2.3-develop branch
Related commit(s):

• 85415eff8ddd81c9b204ec6c093efe49d467ba9e
• 2263d2e9fe2359b86c26dc91597cf50b5a87def4

The fix will be available with the upcoming 2.3.5 release.