How to Fix Acrobat Cannot Convert Combined Files to PDF/A
Question details
Users are unable to convert combined files (such as scanned pages, Word documents, and existing PDFs) into PDF/A format due to compliance errors like missing embedded fonts.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Combining multiple different document formats into a single, archivable PDF/A document.
- Observed behavior
- The conversion to PDF/A fails, producing validation errors such as 'font not embedded (and text rendering mode not 3)' due to incompatible objects or metadata introduced during editing.
Ensure that all necessary fonts used across your original source documents are locally installed on your system and do not have licensing restrictions preventing embedding.
Combine to Standard PDF and Run Preflight Check
Create a standard PDF first, then use Acrobat's Preflight tool to pinpoint and fix specific font embedding or object compatibility issues before exporting to PDF/A.
PDF/A enforces strict archiving standards, requiring all fonts and elements to be fully embedded. Converting combined files directly to PDF/A often fails because the validation process detects incompatible metadata or un-embedded fonts from one of the source files.
Open Adobe Acrobat and select the 'Combine Files' tool to merge your scanned, Word, and PDF documents into a standard PDF format, then save the newly combined document.
Go to the 'Tools' menu, select 'Print Production', and then click on 'Preflight'.
In the Preflight dialog box, select the 'PDF/A compliance' profile and click the 'Analyze and fix' button to identify and embed missing fonts or repair incompatible objects.
Once Preflight successfully resolves the issues and embeds the required fonts, save the final document as a PDF/A file.
Upgrade to a Supported Acrobat Version
Older, End-of-Life versions of Acrobat lack the modern fixes required to properly handle complex PDF/A conversions and font embedding.
Combine Documents to PDF Smoothly with WPS Office
Avoid complex preflight checks and font embedding errors. WPS Office provides an intuitive PDF tool to merge multiple file formats (Word, Excel, Images, PDFs) into a highly compatible standard PDF with ease.
- 1. Open WPS Office: Launch WPS Office and navigate to the 'PDF' tab on the main dashboard to access the PDF toolkit.
- 2. Select Merge PDF: Click on the 'Merge PDF' tool from the available utility options.
- 3. Add Your Files: Drag and drop your various source files, such as Word documents, images, and existing PDFs, into the merger window.
- 4. Merge and Save: Click the 'Merge' button to combine everything into a single, unified, and widely compatible PDF document.
Frequently Asked Questions
What does the 'font not embedded' error mean in a PDF/A?
PDF/A is an ISO-standardized format for long-term archiving that strictly requires all fonts used in the document to be embedded directly within the file. If a font is missing from your system or has strict licensing restrictions preventing embedding, the PDF/A validation will flag it as an error.
Why does combining different file types cause PDF/A compliance to fail?
Combining different source files (like Word documents, faxed images, and older PDFs) introduces mixed metadata, different text rendering modes, and varying font dependencies into one file. PDF/A validation evaluates the final combined document, meaning an inconsistency in just one source page will cause the entire PDF/A conversion to fail.
Can I force a font to embed in Adobe Acrobat?
Yes, you can attempt to force font embedding by running the 'Preflight' tool under Print Production, or by adjusting your Adobe PDF printer settings to 'Always Embed' specific fonts. However, this only works if the font is installed locally on your machine and allows embedding.
