Check font embedding

Check if the fonts in a PDF are embedded, subset, or missing, with details (type, encoding, ToUnicode) and export JSON — locally.

Import a PDF

No data is sent to a server: everything is done in your browser.

Professional PrintingEnsure that fonts are embedded before sending to a printer or service provider.
Multi-Reader CompatibilityAvoid font substitutions between Adobe Reader, browsers, and mobile viewers.
PDF/A PreparationIdentify non-embedded fonts (often blocking for certain archiving standards).
Render DebugUnderstand why characters change, disappear, or shift depending on the workstation.

A report indicating, for each font, whether it is embedded, subset, or referenced without embedding.

Useful details: base name, type (Type0/TrueType/Type1…), encoding, presence of a ToUnicode (if detectable).

An "embedded" font does not guarantee 100% identical rendering: encoding and Unicode mapping also matter.
Some PDFs use proprietary fonts or subsets with "cryptic" names (e.g., ABCDEF+Font).
On encrypted or corrupted PDFs, detection may be incomplete.

What is a "subset" font?

It is a partially embedded font: only the glyphs used in the document are included.

Why does my PDF have a non-embedded font?

It depends on the generation/export tool. Many leave the external font by default.

What is ToUnicode for?

It is a table that helps retrieve Unicode text during copy/search/extraction.

If your goal is reliable text extraction, also check for the presence of ToUnicode: an embedded font without mapping can make extraction difficult.