Opened 5 years ago

Closed 5 years ago

Last modified 5 years ago

#5340 closed defect (invalid)

Slippy-map is blurry in Chrome on Linux

Reported by: brian@… Owned by: rails-dev@…
Priority: minor Milestone:
Component: website Version:
Keywords: Cc:


Using Chrome version 44.0.2403.107 (64-bit) on Ubuntu Linux.

When browsing the regular slippy map, the tiles appear blurry. When I change the zoom level, they are clear for a split second, but then it looks like anti-aliasing is performed, and the map blurs.

Here's an example of the blur: The left hand part of the image is the slippy map. The right hand part is that same tile, after a right click and "Open image in new tab". It is much clearer, despite appearing to be at the same scale.

The image is simply a cropped screenshot, with the tile's browser window being positioned above the slippy map on screen.

It doesn't matter which render I choose in the layers menu, they all behave like this. In Firefox, the slippy map's quality is much, much better.

Change History (4)

comment:1 Changed 5 years ago by Tom Hughes

Resolution: invalid
Status: newclosed

Seems fine to me in chromium, but in any case if there is a problem it will in Leaflet, not in our code. They have an issue tracker at

comment:2 Changed 5 years ago by pnorman

A likely cause is browser zoom is on and almost 100%. That or something specific to your setup.

comment:3 Changed 5 years ago by iandees

You might also want to check that Chrome's zooming isn't enabled. Check your URL bar for a little magnifying glass on the right side or go to the View menu and pick "Actual Size".

comment:4 Changed 5 years ago by brian@…

It isn't the browser's own zoom feature. That's actually very difficult to accidentally activate on OSM, since its shortcut is overridden.

I'd never heard of Leaflet, but I suppose I'll go there and log this instead.

Edit: Before blaming the browser, bear in mind that the right half of the image is also a Chrome browser window, just showing the tile directly instead of through the map application.

Last edited 5 years ago by brian@… (previous) (diff)
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