MAHMOUD ABDELNABY
Localization · CLI SCRIPT · 2

Arabic Web Typography Performance & Font Loading Optimization Kit

Practical Arabic web font optimization examples. File-size savings and CLS impact depend on the chosen font, glyph subset, browser, and baseline; this kit does not claim a fixed 65% reduction or guaranteed CLS elimination.

Problem it addresses

Build an open-source Arabic web font optimization toolkit with example @font-face CSS, a Python glyph subsetting script, and guidance for measuring Core Web Vitals. The included snippet is not production-tested across all listed fonts, and no fixed file-size reduction is guaranteed.

Who it is for

PRO operating in high-growth e-commerce, digital publishing, and direct-response marketing across Saudi Arabia, UAE, and Egypt.

What is inside

Key files listed in the README repository architecture:

  • configs/arabic_unicode_ranges.json
  • css/arabic-fonts-performance-reset.css
  • docs/eliminating-cls-arabic-fonts.md
  • LICENSE
  • README.md
  • src/subset_arabic_font.py
  • tests/test_subsetting.py

How to evaluate and use it

  1. Read the README first and confirm that the documented problem matches your use case.
  2. Inspect the listed files to find the data, tools, templates, and tests relevant to your task.
  3. Follow the repository’s Quick Start and check prerequisites before running commands.
  4. Compare outputs with documented examples and review limitations before using them in a decision or client workflow.

Quick Start from the README: python -m unittest discover -s tests · python src/subset_arabic_font.py --help

Scope and limitations

  • FOUT & FOIT Prevention: Uses 'font-display: swap' and targeted preloading of initial Arabic glyph subsets to eliminate invisible text flashing.
  • Variable Font Compression: WOFF2 and glyph subsetting can reduce transfer size; measure the actual source and subset files for each font rather than relying on a universal size target.
  • Baseline Vertical Alignment: Corrects Arabic font vertical metric clipping (ascent/descent) across multi-line headings and buttons.

This page summarizes the available documentation; it does not establish performance or business results. Verify data and prerequisites before use.

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