Font not embedded in PDF: meaning, check, fix

A report says a font is not embedded in your PDF. What that means, where the warning comes from, how to check it on a Mac, and how to fix it at the source.

Checked on October 12, 2026 Reviewed on October 12, 2026 By Pocket Implementation

“Font not embedded” means the PDF names a font but does not carry the font’s shapes. Every viewer that opens it has to find that font on its own computer, and when it cannot, it draws the text with a substitute. On your screen the file may look perfect, because the font is installed on your Mac; on the print shop’s machine the same words can come out in another typeface. The warning matters for print, publishing and archiving, and it matters little for a standard font like Helvetica on a screen. The usual fix is at the source: export the PDF again with the fonts embedded.

What does “font not embedded” mean?

A PDF can hold a font in two ways. Embedded, the font program, which holds the outlines of its glyphs, is stored in the file, whole or as a subset. Not embedded, the file holds only the font’s name, the width of each character and a few metrics. The PDF standard says those metrics are there so that a reader can “synthesize a substitute font or select a similar font when the font program is unavailable.”

Because the widths are in the file, the substitute keeps the layout: lines break where they did and columns stay aligned. What changes is the shape of the letters. Adobe’s help on font handling puts it plainly: “The substitution cannot always match the shape of the original characters, especially with unconventional typefaces like scripts.” For some scripts there is no substitute at all: “Fonts from some languages or with unknown encodings cannot be substituted. In such cases, the text appears as bullets in the file.”

With the outlines in the file, the text looks the same everywhere. With only the name, each computer decides.

One group of fonts is an exception. The standard lists fourteen fonts that every reader must provide, or provide a substitute for: Times, Helvetica, Courier, Symbol and ZapfDingbats in their styles. A file that names Helvetica without embedding it is normal and displays well almost everywhere. The embedded font entry has the full list.

Where does the warning come from?

From a tool that checks the file before it is used for something exact:

Print shops and self-publishing. Printers check files before they print. Amazon’s Kindle Direct Publishing tells authors: “Embed all fonts in your native file prior to submission.” It adds: “We recommend that fonts be fully embedded, rather than embedding as subsets.”
Preflight. Acrobat Pro’s Preflight and similar checkers report fonts that are not embedded, because a press must not guess.
Upload portals and archives. Journals, courts and records offices run their own checks and may refuse a file for this reason; their submission rules say what they accept.
PDF Textfix. View > Issues (⌥⌘I) counts the lines that use a font the file does not embed, on the pages you have viewed, with the note: “Other viewers may draw them with a different font.”

Is a font that is not embedded a problem?

It depends on what happens to the file next:

On screen, with a standard font, rarely. Helvetica, Times and Courier have close substitutes everywhere.
On screen, with an unusual font, often. A script, display or corporate font falls back to something generic, and a signature-style heading turns plain.
In print or in an archive, yes. The output must match what was approved, and a substitute on the printer’s computer will not.
For editing, it limits what an editor can do. An editor cannot type with outlines that are not in the file. It uses the font installed on your Mac, if you have it, or another font.

How do I check which fonts are embedded on a Mac?

Three ways:

pdffonts. Install Poppler with Homebrew, brew install poppler, and run pdffonts file.pdf. The emb column says “yes” for every embedded font; a “no” is a font the file only names.
Acrobat Reader. File > Document Properties > Fonts lists the document’s fonts.
PDF Textfix. Edit a line (press Return or double-click it) and the bar under the pages names its font, for example “Font: Helvetica (not embedded), 11 pt”. The Issues pane counts the lines that use a font the file does not embed, on the pages you have viewed.

This is what pdffonts printed on October 12, 2026 for a test page that names three fonts and embeds none of them:

name                                 type              encoding         emb sub uni
------------------------------------ ----------------- ---------------- --- --- ---
Helvetica                            Type 1            WinAnsi          no  no  no
Arial                                TrueType          WinAnsi          no  no  no
IBMPlexSerif                         TrueType          WinAnsi          no  no  no

Helvetica is one of the standard fourteen, so the “no” there is normal. Arial and IBM Plex Serif are not, and every viewer without them draws a substitute. How to find which fonts a PDF uses on a Mac goes through each tool and what its columns mean.

How do I fix a font that is not embedded?

Fix it where the PDF was made, and check the result with one of the tools above.

Export the PDF again from the source. Open the original document in Word, Pages, InDesign, LaTeX or the design app it came from, and export a new PDF on a computer that has the font installed. The source app has the full font, so the new file can carry it. In Word for Mac, Microsoft’s steps are: “On the File menu, select Save As.”, then “In the File Format box, select PDF.”, then Export.
Use the settings your printer or archive asks for. When the exporter offers presets or settings for print or archiving, choose the one your printer, publisher or archive names in its file rules, with font embedding on where the dialog shows it, and check the result before you send it.
On the command line, install the font first. Ghostscript, which converts and rewrites PDFs from the command line, embeds a substitute when the font is missing. Its documentation for the PDF writer: “Fonts which are not embedded in the input will have a substitute assigned and that will be embedded in the output.” Run it on a computer without the original font and the substitute becomes part of the file.
Embed the font afterwards in Acrobat Pro. Adobe’s help describes the route: “open the PDF in Acrobat and embed the font using the Preflight fixup.” It works when the font is installed on the computer doing it and its licence allows embedding.
Print to a new PDF on a Mac, with the font installed. File > Print, then Save as PDF, has macOS draw the pages again. Apple’s Preview guide gives that route for flattening a file: “To save a PDF and flatten annotations (so that they can’t be edited), choose File > Print, then select Save as PDF.” In a test on October 12, 2026, the test page above, drawn again by macOS 27’s own PDF engine (Quartz), came out with Helvetica and Arial embedded as subsets, since both are installed on the Mac, and with IBM Plex Serif, which is not, replaced by embedded subsets of the Mac’s system font. So the new file carries the original font only when the Mac has it; otherwise the substitute becomes permanent. Check the result with pdffonts.

When the font cannot be embedded at all, the vendor has said so in the font itself. Adobe’s help: “A font can be embedded only if it contains a setting by the font vendor that permits it to be embedded.” The font embedding permissions entry explains the settings. Your choices are then another font with an embeddable licence, or converting the text to outlines in the source app, which makes it a drawing that can no longer be searched, copied or edited as text. See text converted to outlines.

What can an editor do with a font that is not embedded?

Less than with an embedded one, since there are no outlines to type with. In PDF Textfix:

Lines in the standard 14 fonts, and in the core TrueType fonts that stand in for them, such as Arial and Times New Roman, stay editable when they are not embedded. While you edit such a line, the bar under the pages says “(not embedded)” next to the font’s name, and the Issues pane counts the lines in it.
Characters the line’s font can write keep that font, so other viewers draw them as they draw the rest of the line: with the font if they have it, or with their substitute. A character it cannot write follows the fallback order and is marked.
On your Mac, the line shows in the installed font of that name, or the closest match.
PDF Textfix does not embed or change the fonts already in a file. It is not a fix for this warning: fix the font at the source, then edit.

How fonts work inside a PDF explains the rest of the picture: subsets, encodings and the fallback order an editor follows.

Questions people ask about fonts that are not embedded

Does embedding fonts make the PDF bigger?

A little. Adobe’s help says: “Embedding the font slightly increases file size unless the document uses CID fonts, commonly used in Asian languages.”

Why does Helvetica or Arial show as not embedded?

Because a PDF does not have to embed the standard fonts: every PDF reader must supply Helvetica, Times and Courier or a close substitute. Arial is not one of the fourteen, so a computer without Arial draws a substitute. For print, embed both anyway.

What does "font ArialMT is not embedded" mean?

ArialMT is the PostScript name of Arial, the name a PDF records for it. On a Mac with macOS 27, the installed Arial reports ArialMT as its PostScript name, and the test page above, redrawn by macOS, listed its Arial as ArialMT (the bold is Arial-BoldMT). The message means the file names Arial without carrying its shapes. A computer that has Arial shows the text as intended; one that does not draws a substitute. For print, export the file again with the font embedded.

Why are my fonts not embedded when I export a PDF?

Usually for one of three reasons: the exporter’s settings leave fonts out; the font’s licence forbids it, since, in Adobe’s words, “A font can be embedded only if it contains a setting by the font vendor that permits it to be embedded.”; or the font is one of the standard fourteen, which a PDF may name without embedding. Choose settings that embed all fonts, then check the result.

Will a print shop accept subset fonts?

A subset is embedded, so a check for embedded fonts passes. Some printers, such as Amazon KDP, recommend full fonts instead. Follow the printer’s own file rules.

Sources

Adobe's help on font embedding says what embedding prevents, that a font can be embedded only when its vendor permits it, how a missing font is substituted and when text shows as bullets, and that Acrobat's Preflight fixup can embed a font afterwards. helpx.adobe.com, read on October 12, 2026.
Amazon KDP asks for every font to be embedded in a print manuscript, and recommends full fonts over subsets. kdp.amazon.com, read on October 12, 2026.
The PDF standard (ISO 32000-1) says a font descriptor's metrics let a reader synthesize or select a substitute font when the font program is unavailable, and that readers must provide the standard 14 fonts or substitutes for them. opensource.adobe.com, read on October 12, 2026.
Acrobat lists a PDF's fonts under File > Document Properties > Fonts on a Mac. helpx.adobe.com, read on October 12, 2026.
The pdffonts manual defines its emb column as yes when the font is embedded. xpdfreader.com, read on October 12, 2026.
Microsoft's help for Word for Mac gives the steps to save a document as a PDF. support.microsoft.com, read on October 12, 2026.
Ghostscript's documentation for its PDF writer says that fonts not embedded in the input are given a substitute, which is embedded in the output. ghostscript.readthedocs.io, read on October 12, 2026.
Apple's Preview User Guide says File > Print, then Save as PDF, saves a PDF with its annotations flattened. support.apple.com, read on October 12, 2026.
Test of October 12, 2026 on macOS 27.0.1: a test page naming Helvetica, Arial and IBM Plex Serif without embedding them shows emb no for all three in pdffonts 26.08.0 (Poppler). Redrawn with macOS's PDF engine (Producer: Quartz PDFContext), it embeds subsets of Helvetica and ArialMT, both installed, and replaces IBM Plex Serif, not installed, with embedded subsets of the system font. Core Text reports ArialMT as the PostScript name of the installed Arial. poppler.freedesktop.org, read on October 12, 2026.