What's the maximum image size one can upload? 2 or 4 MB?

The information seems inconsistent:

4 MB:

enter image description here

2 MB:

enter image description here

(also Mb is confused with MB, and mb is even more wrong)


2 Answers 2


This has been fixed and will be deployed as of build 3531 (on MSE/MSO) and 2687 (on other sites). Thanks to pacoverflow for doing the testing to determine the real limit!

(It's been changed to say 2MB everywhere, and not 2Mb or 2mb.)

  • 1
    However, ‘2MB’ is wrong; it shall read ‘2 MB’.
    – user271002
    Jun 29, 2015 at 15:51
  • Okay, I'll check in the fix shortly. Jun 29, 2015 at 15:52
  • @Loong The "2 MB" fix will be deployed as of build 3532 on MSE/MSO (and still 2687 on other sites). Jun 29, 2015 at 16:43

It appears that the maximum image size is 2 MB. I tried to upload this image that is 2,303,164 bytes, and I got the following error:

enter image description here

A different image that is 1,883,430 bytes was successfully uploaded.

  • That image you successfully uploaded is the sort where it does seem feasible to process the reflection in the eye to see the photographer.
    – Mark Hurd
    Jul 3, 2015 at 1:27

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