Online Font Viewer & Typography Studio
Open, test, and inspect TrueType (TTF), OpenType (OTF), WOFF, and WOFF2 font files directly in your web browser. Character glyph maps, waterfall type scales, CSS @font-face generators, and 100% in-memory privacy.
Waterfall Type Scale Preview:
The Complete Guide to Typography Formats (TTF, OTF, WOFF, WOFF2) & Online Font Viewers
Typography is the emotional and functional cornerstone of digital design. The choice of typefaces influences reading velocity, brand identity, visual hierarchy, and user accessibility. Modern digital typography is governed by several core container specifications, each tailored for desktop workstations, mobile rendering, or ultra-compressed web delivery.
The HiFi Toolkit Online Font Viewer allows designers, brand managers, and frontend developers to preview custom typefaces, audit character glyph coverage, test responsive optical sizing across waterfall scales, and generate production-ready CSS rules without installing font managers on their local machines.
Understanding Font Formats: TTF vs. OTF vs. WOFF vs. WOFF2
TrueType (TTF) & OpenType (OTF)
Desktop standards developed by Apple and Microsoft. OTF builds on TTF with advanced typographic features (ligatures, small caps, alternate glyphs) and PostScript cubic Bézier curves.
WOFF & WOFF2 (Web Open Font Format)
The official W3C web font standard. WOFF2 utilizes the Brotli compression algorithm to achieve 30% smaller file sizes than WOFF 1.0, dramatically accelerating page load times.
How to Test and Inspect Font Files Online
- Upload Font: Click Open Font File or drag and drop any
.ttf,.otf,.woff, or.woff2file. - Test Typography: Adjust font size, weights, and letter spacing to observe rendering clarity.
- Inspect Glyphs: Check the
Glyph Gridtab to confirm all uppercase, lowercase, numbers, and special symbols are present. - Export CSS: Switch to the
Font Metricstab to copy the CSS@font-facesnippet.
