GitHub user dosubot[bot] added a comment to the discussion: [6.0.0] The width
of PDFs generated via "Dashboard">"Download">"Export PDF" is set to 1600 pxl or
a multiple if "WEBDRIVER_WINDOW = {"pixel_density": [>1],} and are not ISO
formats (A4, A3...)
<!-- Answer -->
That's a great idea—superset/config.py currently has only minimal comments for
WEBDRIVER_WINDOW and related export settings, and it doesn't clarify that only
pixel_density affects dashboard PDF export width, while the dashboard/slice
window sizes have no effect on PDFs. Adding comments to explain these
limitations (for example: which settings impact PNG vs. PDF exports, the fixed
1600px base width for PDFs, and the role of pixel_density) would help users
avoid confusion and better understand how to tune export quality and resource
usage. Community discussions show that many users run into these issues, so
improving the comments would be valuable for clarity and troubleshooting
[example](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/config.py#L1524-L1546)
[discussion](https://github.com/apache/superset/discussions/35327).
If you decide to add comments, it's helpful to be explicit about which settings
affect which export types, and to note the current limitations (like lack of
ISO page sizing or DPI control for dashboard PDFs). This matches common open
source best practices for config files.
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[](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/ask?utm_source=github) [](https://cursor.com/link/prompt?text=That%27s%20a%20great%20idea%E2%80%94superset/config.py%20currently%20has%20only%20minimal%20comments%20for%20WEBDRIVER_WINDOW%20and%20related%20export%20settings%2C%20and%20it%20doesn%27t%20clarify%20that%20only%20pixel_density%20affects%20dashboard%20PDF%20export%20width%2C%20while%20the%20dashboard/slice%20window%20sizes%20have%20no%20effect%20on%20PDFs.%20Adding%20comments%20to%20explain%20these%20limitations%20%28for%20example%3A%20which%20settings%20impact%20PNG%20vs.%20PDF%20exports%2C%20the%20fixed%201600px%20base%20width%20for%20PDFs%2C%20and%20the%20role%20of%20pixel_density%29%20would%20help%20users%20avoid%20confusion%20and%20better%20understand%20how%20to%20tune%20export%20quality%20and%20resource%20usage.%20Community%20discussions%20show%
20that%20many%20users%20run%20into%20these%20issues%2C%20so%20improving%20the%20comments%20would%20be%20valuable%20for%20clarity%20and%20troubleshooting%20%5Bexample%5D%28https%3A//github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/config.py%23L1524-L1546%29%20%5Bdiscussion%5D%28https%3A//github.com/apache/superset/discussions/35327%29.%20%0A%0AIf%20you%20decide%20to%20add%20comments%2C%20it%27s%20helpful%20to%20be%20explicit%20about%20which%20settings%20affect%20which%20export%20types%2C%20and%20to%20note%20the%20current%20limitations%20%28like%20lack%20of%20ISO%20page%20sizing%20or%20DPI%20control%20for%20dashboard%20PDFs%29.%20This%20matches%20common%20open%20source%20best%20practices%20for%20config%20files.) [](https://go.dosu.dev/discord-bot) [](https://twitter.com/intent/tweet?text=%40dosu
_ai%20helped%20me%20solve%20this%20issue!&url=https%3A//github.com/apache/superset/discussions/36949)
GitHub link:
https://github.com/apache/superset/discussions/36949#discussioncomment-15434805
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