Hi

I think that this support article should help:

https://support.mozilla.org/en-US/kb/change-fonts-and-colors-websites-use

Does Google Chrome use the same font as Firefox ?

You can right-click and select "Inspect" to open the built-in Inspector with this element selected.

• https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector/How_to/Examine_and_edit_HTML

You can check in the Rules tab in the right panel in the Inspector what font-family is used for selected text. You can check in the Fonts tab in the right panel in the Inspector what font is actually used because Firefox might be using a different font than specified by the website.

• https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector/How_to/Edit_fonts

example https://www.paypal.com/au/home

i've attached chromepaypal.png and firefoxpaypal.png. The Firefox one is more bolder than Chrome

When i use Font Inspector to inspect "For You" heading https://addons.mozilla.org/en-US/firefox/addon/font-inspector-webextension/

Using Font Inspecter Addon in Chrome

Info for selected <a> element:
 (I): — — — — — — —
 font size: 14px
 font style: normal
 font weight: 700
 font variant: normal
 font family: PayPalSansSmall-Regular, \Helvetica Neue\, Arial, sans-serif
 rendered font family (estimated): PayPalSansSmall-Regular
 (II): — — — — — — —
 font color: rgb(44, 46, 47)
 background color: rgba(0, 0, 0, 0)
 (III): — — — — — — —
 text align: left
 text indent: 0px
 line height: 37.8px
 text transform: uppercase
 text decoration: none solid rgb(44, 46, 47)
 (IV): — — — — — — —
 HTML element id: N/A
 HTML element class: pypl-header__subnav-control, main-link, pypl-header__subnav-control--is-active, pypl-header__subnav-control--is-highlighted
 HTML element type: a
 frameId: 0
 tabId: 2
 title: Pay Online, Send Money or Set Up a Merchant Account - PayPal Australia
 top: https://www.paypal.com/au/home

Font Inspecter Addon in Firefox

  Info for selected <a> element:
 (I): — — — — — — —,
 font size: 14px,
 font style: normal,
 font weight: 700,
 font variant: normal,
 font family: PayPalSansSmall-Regular, Helvetica Neue, Arial, sans-serif,
 rendered font family (estimated): PayPalSansSmall-Regular,
 (II): — — — — — — —,
 font color: rgb(44, 46, 47),
 background color: rgba(0, 0, 0, 0),
 (III): — — — — — — —,
 text align: left,
 text indent: 0px,
 line height: 37.8px,
 text transform: uppercase,
 text decoration: rgb(44, 46, 47),
 (IV): — — — — — — —,
 HTML element id: N/A,
 HTML element class: pypl-header__subnav-control, main-link, pypl-header__subnav-control--is-active, pypl-header__subnav-control--is-highlighted,
 HTML element type: a,
 (V): — — — — — — —,
 tab id: 2,
 tab height: 968px,
 tab width: 1920px,
 tab domain: www.paypal.com,
 tab title: Pay Online, Send Money or Set Up a Merchant Account - PayPal Australia