IEEE Font Not Embedded: Complete Fixing Guide¶

What This Page Covers¶

Use this page when the IEEE validation report points to missing font embedding, missing subsets, or rendering risk caused by fonts that were not packaged correctly into the PDF.

When to Use This Page¶

Use this page if you need to understand:

why font embedding matters in submission validation
how this differs from PDF/A, template mismatch, or page-size problems
which PDF and layout checks to run after fixing the font issue

The "Font Not Embedded" error is one of the most technical and frustrating hurdles in the IEEE paper submission process. IEEE requires that ALL fonts used in your document be embedded and subset within the PDF file to ensure consistent rendering across all devices and printers.

Common Failure Pattern¶

This error often appears when:

the main document exports correctly, but included figures contain unembedded fonts
Word or a PDF printer uses export settings that do not fully embed fonts
font replacement happens silently during PDF generation

The practical risk is not only display quality. Font failures can also trigger adjacent archival or formatting issues during validation.

Why IEEE Requires Font Embedding¶

When a font is not embedded, the PDF viewer (like Adobe Acrobat or a web browser) must rely on the fonts installed on the local system. If the specific font you used is missing, the viewer will substitute it with another font, which can lead to: - Layout Shifts: Different font widths can cause text to overflow margins or overlap with figures. - Missing Symbols: Mathematical symbols or special characters may appear as boxes or garbled text. - Searchability Issues: Non-embedded fonts can break the indexing of your paper in IEEE Xplore.

Common Fonts That Fail Embedding¶

Times New Roman: Often assumed to be universal, but different versions can cause issues.
Symbol: Frequently used in equations but not always embedded by default PDF creators.
Helvetica/Arial: Common sans-serif fonts used in figures.
Asian Language Fonts: If your system uses specific localized fonts for punctuation or symbols.

How to Check for Non-Embedded Fonts¶

Before submitting to PDF eXpress, you can check your PDF locally: 1. Open your PDF in Adobe Acrobat. 2. Go to File > Properties > Fonts. 3. Every font listed must say (Embedded Subset) or (Embedded) next to its name. If any font says "Actual Font" or nothing at all, it is not embedded.

How to Fix Font Embedding in LaTeX¶

LaTeX is generally good at embedding fonts, but certain configurations or included PDF figures can introduce non-embedded fonts.

1. Force Type 1 Fonts¶

Ensure your LaTeX distribution is using Type 1 fonts instead of Type 3 (which are bitmapped and often rejected). Add this to your preamble:

\usepackage[T1]{fontenc}

2. Check Included PDF Figures¶

This is the most common source of errors in LaTeX. If you include a PDF figure that was exported from Excel, MATLAB, or Python without font embedding, your main PDF will also fail.

Fixing Figures with Ghostscript: Run this command on your figure PDFs before including them:

gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dEmbedAllFonts=true -sOutputFile=fixed_fig.pdf -f original_fig.pdf

3. Final PDF Processing¶

You can use Ghostscript to force embedding on your final compiled PDF:

gs -dSAFER -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=letter -dPDFSETTINGS=/prepress -dCompatibilityLevel=1.4 -dMaxSubsetPct=100 -dSubsetFonts=true -dEmbedAllFonts=true -sOutputFile=IEEE_Final.pdf -f Input_File.pdf

How to Fix Font Embedding in Microsoft Word¶

Word's default "Save as PDF" often fails to embed all fonts.

Word Options: Go to File > Options > Save. Check the box "Embed fonts in the file." (Note: This embeds them in the .docx, not necessarily the PDF).
Export Settings: Go to File > Export > Create PDF/XPS. Click Options.
ISO 19005-1 compliant (PDF/A): Checking this box will force font embedding, as it is a requirement of the PDF/A standard.
Avoid "Best for electronic distribution": Use "Best for printing" if available, as it usually has better embedding settings.

Fixing via IEEE PDF eXpress¶

If you cannot solve the embedding issue locally, the most reliable method is: 1. Upload Source Files: Instead of uploading your PDF, upload your LaTeX ZIP or Word .docx directly to the PDF eXpress portal. 2. Let IEEE Build It: The PDF eXpress server has all the necessary fonts and correct settings. It will generate a PDF for you that is 100% compliant with font embedding rules. 3. Download and Re-submit: Download the generated PDF and use that file for your final submission.

Why This Is Not the Same as Other IEEE Errors¶

Font not embedded is about PDF resource packaging.
PDF/A required is about archival profile compliance.
Template mismatch is about using the wrong structural format.
Page size incorrect is about document geometry.

These problems can overlap, but they are not interchangeable.

What to Check Next¶

Check IEEE PDF/A required if the export path also needs archival compliance.
Check IEEE template mismatch if the document came from an outdated template or nonstandard export workflow.
Check IEEE page size incorrect and IEEE margin mismatch if the file still fails after fonts are fixed.
Return to the IEEE hub if the report shows multiple validation failures at once.

Back to: IEEE Submission Hub