Formatting Issues

How to Fix Missing Open Sans Fonts in Adobe Document Cloud PDFs

Anum Mushtaq Oct 22, 2026 868 views

Question details

The user needs to understand why Open Sans fonts are not recognized in Adobe Document Cloud and how to properly embed them in the PDF.

How to Fix Missing Open Sans Fonts in Adobe Document Cloud PDFs

Product: Adobe Document Cloud
Device & OS: not provided
Scenario: Viewing or editing a PDF containing Open Sans fonts in Adobe Document Cloud.
Observed behavior: The embedded Open Sans font is missing or not recognized, causing the document to substitute fonts and alter the intended formatting.

Before you start

Ensure that the Open Sans font family is installed on your local computer and that you have access to the original source file (e.g., Word, InDesign) used to create the PDF.

Solution 1Recommended

Inspect and Embed Fonts using Adobe Acrobat Pro Preflight Tool

Use the Preflight tool in Adobe Acrobat Pro to check if Open Sans is properly embedded and correct font compliance issues automatically.

Adobe Document Cloud does not activate or replace fonts like desktop applications do; it relies entirely on the fonts embedded within the uploaded PDF. Using the Preflight tool helps identify and fix these missing embeddings.

Open the PDF in Acrobat Pro

Launch Adobe Acrobat Pro DC and open the PDF document that is missing the Open Sans font.

Access the Preflight Tool

Navigate to 'Tools' in the top menu, select 'Print Production', and then click on 'Preflight' in the right-hand pane.

Run the Font Embedding Fixup

In the Preflight dialog box, search for 'Embed missing fonts' under the 'PDF fixups' section. Select it and click the 'Analyze and fix' button.

Inspect and Embed Fonts using Adobe Acrobat Pro Preflight Tool

Save a Copy: Always save a backup copy of your original PDF before running Preflight fixups to prevent accidental data loss.

Solution 2

Regenerate the PDF with Strict Font Embedding Enabled

If Acrobat cannot embed the fonts post-creation, you must re-export the PDF from the original authoring application with embedding settings enabled.

Seamless PDF Management

Manage and Edit PDFs with Embedded Fonts Using WPS Office

WPS Office includes a robust, built-in PDF editor that accurately reads embedded fonts like Open Sans, ensuring your documents look perfect across all devices. You can effortlessly edit text, add comments, and save PDFs without losing original font formatting.

1. Launch WPS PDF: Open WPS Office and click on the 'PDF' tab to access the integrated PDF reader and editor.
2. Open Your Document: Click 'Open' and select the PDF file containing your Open Sans fonts.
3. Edit the PDF Text: Navigate to the 'Edit' tab and select 'Edit Text' to make modifications directly; WPS PDF handles the embedded fonts seamlessly.
4. Save and Export: Click 'Save' to retain all formatting and font embeddings for flawless sharing.

Native support for reading and preserving embedded PDF fontsSeamless compatibility with standard PDF formats and Microsoft Office filesLightweight, fast, and completely free to download

microsoft office alternative - wps office

Frequently Asked Questions

Why do fonts change when I upload a PDF to Adobe Document Cloud?

If the original fonts aren't properly embedded in the source PDF file, Document Cloud will substitute them with standard system fonts to render the text, which often alters the appearance and layout of the document.

How do I check if Open Sans is embedded in my PDF?

Open the PDF in Adobe Acrobat Reader or Pro, go to 'File' > 'Properties', and click on the 'Fonts' tab. You will see a list of all fonts used in the document. Look for the phrase '(Embedded Subset)' next to Open Sans.

Can I add missing fonts directly inside Adobe Document Cloud?

No, Adobe Document Cloud relies on the fonts already embedded within the PDF or those available on the viewing system. To resolve missing fonts, you must embed them using a desktop application like Adobe Acrobat Pro before uploading.

Document & File Issues