plotly / plotly/plotly.py

Image show fails in Firefox with high resolution image

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bug P3
Dominant language
Python
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Description

image This large 10709x2425 image fails to show with px.imshow or with add_layout_image on Firefox. It does load on Chrome.

from urllib.request import urlretrieve

import plotly.express as px
import PIL.Image

image_url = "https://github.com/plotly/plotly.py/assets/86078178/11c9876a-233c-4a2b-bfd8-5d8f197ca808"
image_file = urlretrieve(image_url)[0]

with PIL.Image.open(image_file) as image:
    px.imshow(image).show()

    downsampled_image = image.resize((image.width // 4, image.height // 4))
    px.imshow(downsampled_image).show()

This code should display a blank plot, followed by a plot of the desired image.

Versions:

plotly:  5.15.0
kaleido: 0.2.1
firefox: 114.0.2 (64-bit)
system:  Ubuntu 20.04.6 LTS

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the provided Python reproducer using px.imshow and add_layout_image, comparing Firefox with Chrome for the 10709x2425 image and its downsampled version. Trace the image-rendering path used by those entry points and verify the fix by confirming that the full-resolution image displays in Firefox without breaking the downsampled case.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data-visualization
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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