How to HTML To PDF Fonts Guide
Typography makes or breaks PDF quality. SublimePDF's Chromium renderer supports web fonts, system fonts, and embedded fonts so your generated PDFs match your brand's typeface exactly. This guide covers loading custom fonts, handling fallbacks, and avoiding common rendering issues like missing glyphs, font substitution, and blurry text.
Follow the step-by-step instructions below, then use the free tool directly — no registration or download required.
Open Tool →How to HTML To PDF Fonts Guide — Step by Step
Use @font-face to load custom fonts
Include @font-face declarations in your HTML template's <style> block. Reference font files by URL: @font-face { font-family: 'BrandFont'; src: url('https://yourcdn.com/brand-regular.woff2') format('woff2'); }. WOFF2 is preferred for smallest file size.
Specify a robust font stack
Always define fallback fonts: font-family: 'BrandFont', 'Helvetica Neue', Arial, sans-serif. If the custom font fails to load, the PDF still renders with a reasonable fallback instead of a default serif font.
Include all needed font weights and styles
Load each weight and style as a separate @font-face rule. If your template uses bold headings and italic captions, you need BrandFont-Bold.woff2 and BrandFont-Italic.woff2. Without them, the browser fakes bold/italic with subpar results.
Handle Unicode and non-Latin scripts
For documents in CJK (Chinese, Japanese, Korean), Arabic, Hindi, or other non-Latin scripts, ensure your font includes the required character range. Use the unicode-range descriptor in @font-face to load script-specific fonts only when needed.
Test font rendering in the PDF
Generate a test PDF with all characters and weights your template uses. Compare it against the browser rendering to catch differences. Check for missing glyphs (shown as □ or ?), incorrect kerning, and weight mismatches.
Pro Tips
- 💡 Host fonts on a fast CDN with proper CORS headers (Access-Control-Allow-Origin) — SublimePDF's renderer fetches fonts like a browser, so CORS restrictions apply.
- 💡 Use base64-encoded fonts as data URIs in your @font-face src for guaranteed loading: src: url('data:font/woff2;base64,...'). This eliminates network dependencies but increases HTML payload size.
- 💡 Set a 'waitForFonts': true option in your API request to ensure the renderer waits for all @font-face fonts to load before capturing the PDF — without it, text may render in the fallback font.
- 💡 The SublimePDF rendering environment includes standard system fonts (Arial, Times New Roman, Courier New, Georgia, Verdana). Avoid relying on macOS-specific fonts like SF Pro or Helvetica Neue without providing them as web fonts.
Privacy & Security
All processing happens directly in your browser. Your files are never uploaded to any server — they remain on your device throughout the entire process. SublimePDF uses WebAssembly technology for fast, secure, client-side processing.
Works Everywhere
This tool works on any modern browser — Chrome, Firefox, Safari, or Edge — on desktop, tablet, or mobile. No software to install. PDF is an open ISO standard supported by all major platforms.
How to HTML To PDF Fonts Guide — FAQ
Why does my custom font not appear in the PDF?
Which font formats should I use?
Can I use Google Fonts in my PDF templates?
How do I ensure consistent rendering across operating systems?
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