Differences in Bitcoin Transaction Size displayed on Block Explorers

[roslinpl]

Hello,

Well, I'm kinda wondering what's going on here,

EDITED:

Hmm .. I'm not a newbie in Bitcoin world but seems I don't understand one thing:

https://www.blocktrail.com
https://btc-bitcore2.trezor.io
https://blockchain.info

All of them shows different size of transaction and as a result also different fee included with the transaction.

If I don't understand something very basic please teach me xD
I thought that the formula for the size of the transaction should give the same result.

I would love to understand why those explorers gives different info about the size / fee.


Best wishes.