A collection of free single-purpose online tools for web developers...
Brought to you by Stefan Judis
(Website, Twitter, GitHub)
and these lovely people:
Matches the x-heights and widths of two fonts (webfont and fallback font)
Search tagged Google Fonts
Test web fonts directly on live sites
Look up keyboard short cuts for special characters
Modify, improve, trim, change and export your fonts in modern formats
Calculate your type scale visually
View the content of a font file
Self host your Google Fonts
Inspect what your fonts can do