The Font Renders Fine in Chrome and Breaks in Safari

Need to Check If a Font File Is Corrupted?

You downloaded a font from an unfamiliar source and it renders strangely in some browsers. Before you ship it to production, you want to verify that the file structure is valid — glyph outlines, core tables, and Unicode mappings are all intact.

OnliTools Font Validator

OnliTools Font Validator checks font parsing, core tables, glyph outlines, and Unicode mappings directly in your browser. Upload your font and get a validation report in seconds.

How to Use It

1. Go to onlitools.com/font-validator.
2. Upload your font file.
3. Review the validation report: parsing errors, table integrity, outline issues.
4. Fix or replace the font before deploying it.

Great For

• Web developers — catch corrupted fonts before they break rendering in production
• Designers — validate fonts from third-party sources before using them in client work
• Font distributors — quickly audit files for structural integrity

Wrap Up

No install, no terminal, no upload to a server. OnliTools Font Validator checks your font files for corruption and structural issues in seconds.