Why mangles the font?

Fonts pantonbold on the website, very strange behavior at certain sizes ,namely, 13 PKS and 12 PKS - letters are not uniform https://yadi.sk/i/B9_4Z6eoso7KK

In other sizes, this is not observed) Why?
July 8th 19 at 11:53
2 answers
July 8th 19 at 11:55
Solution
Used Converter Font Squirrel? It is these sins.
July 8th 19 at 11:57
Perhaps it is not designed for these sizes, in General it is necessary to read docks.

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