400 x 400 is the best.

JPEG is the best.

Here is the proof.

400 x 400 is perfect square.

Its better than 500 x 500 because 500 x 500 is n00b number and is

250000 which reminds me of blaze and the monsters machines.

And JPEG is best because its more underrated than PDF and TIFF and SVG and GIF and HTML and ZIP and TXT and JS and NW and

and every other format combined,

RULES:

Image size and format doesnt really matter here, but 400 x 400 and JPEG is still the best.

No talking about other formats and sizes.

No 18+, 18+ is for MP3 files.

No racism, racism is for .WAV files.

No being sexest, thats for .MP4 files.

OK thats it apart from that do whatever you want idc.