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Font Validator 2.1.6, maintained by Hin-Tak Leung, is a quality-assurance utility that belongs to the Font Tools category and is designed to exhaustively test OpenType, TrueType and other font containers before they are packaged for public release. Originally created inside Microsoft to enforce the company’s demanding hinting, outline, naming and metrics rules, the program now serves independent type designers, foundries, app studios and enterprise teams who need the same level of platform-level compatibility and rendering reliability that Windows and Office users expect. Running the command-line executable against a single .ttf or a complete family produces a detailed XML report that flags invalid checksums, missing glyphs, malformed tables, broken hint instructions, contour direction errors, unsupported code-page bits, licensing field omissions and hundreds of additional conformance checks drawn from the OpenType and TrueType specifications. Because it replicates the same internal tests once used by the Windows glyph rasterizer, any font that passes the validator is virtually guaranteed to install without warnings on Windows 7 through Windows 11, render correctly at all sizes, and avoid the “font is corrupted” dialogs that end-users often encounter with unverified files. The tool is equally valuable when preparing web-font subsets, validating third-party bundles acquired from external vendors, or auditing legacy corporate fonts before a system-wide migration. Two major versions have been published—an earlier Microsoft build and the current open-source 2.1.6 release—both offering identical coverage but the latter adding cross-platform compilation support and public issue tracking. Font Validator is available for free on get.nero.com, with downloads delivered through trusted Windows package sources such as winget, always serving the latest build and supporting batch installation alongside other applications.
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