For designers, both amateur and professional, the main useful difference between OTF and TTF is in the advanced typesetting features. In addition, OTF features embellishments like ligatures and alternate characters—also known as glyphs—that exist to give designers more options to work with. In other words, OTF is indeed the "better" of the two due to the additional features and options, but for the average computer user, those differences don't really matter.
You can't, for example, just decide to use a different version of an "F" in Facebook or embellish common connecting letters like "TH" to make them look like ornate typography. Those that use these will typically do so in Adobe Creative Suite and for the sole purpose of making subtle tweaks that make text look better for print or on the web. Let's flesh things out by looking at three of the most common additions to OTF packages.
Glyphs are alternate characters that you can change to when you're looking for something stylistically different from the default.
Traditional characters might look something like this:. For example, if you need a different "A," you could elect to use a glyph that displays an "A" with different stylistic qualities or one that is used as the default in other alphabets and languages. For example:. Ligatures are strictly a stylistic addition. These are most common with script fonts, but they appear in nearly all high-end packages. Cheaper fonts, or those you can find for free online, are less likely to have many glyphs, ligatures, or other extras.
Ligatures are typically combinations of two different letters that meld together to become a stylistic two-in-one entity. When letters are combined like this, they typically end up with embellished designs or adjusted spacing between the two. Alternate characters are just what they sound like: alternatives to non-alphanumeric characters. Think of them as glyphs for the non-number and non-letter characters in a font set.
They allow designers to select a stylistically different version of the characters they want to use. For each top-level table in the font, there is a Table Record which consists of the following fields.
Each table in the OpenType font file is represented by names known as table tags. It is a must for all the records in the array to be sorted in ascending order by tag. Table of Content. What is a OTF file? Brief History The requirement of OpenType fonts originated as a requirement for a more expressive font format that could handle fine typography.
Data Type Description uint8 8-bit unsigned integer. Fixed bit signed fixed-point number This made it easy to install new fonts and served as an early cross-platform font format that was usable by most consumer devices.
There is really no issue for the end user as almost all modern applications that uses fonts are able to work with TTF and OTF files. It uses a compressed version of the same table-based sfnt structure used by TrueType, OpenType, and Open Font Format, but adds metadata and private-use data structures, including predefined fields allowing foundries and vendors to provide license information if desired. Web Open Font Format is an open format for using fonts on the Web.
Until now, downloadable fonts have not been common on the Web due to the lack of an interoperable font format. So there is graceful fallback. Over time, other browsers will support WOFF as well several are in process of adding support, or have stated they will add it and your style sheets will continue to work as that support grows.
Benefits of WOFF are: 1. Improves availability of fonts to site designers: Many font vendors that are unwilling to license their TrueType or OpenType format fonts for use on the web will license WOFF format fonts.
Universal format for web : Both proprietary and free-software browser vendors like the WOFF format, so it has the potential of becoming a truly universal, interoperable font format for the web, unlike other current font formats.
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