InDesign 2026 - PDF Export Generates Abnormal File Size
After updating to InDesign 2026, exporting PDF files results in drastically larger file sizes compared to previous versions (e.g., from 6 MB to 50 MB) with the exact same content.
The issue persists even when:
The "Smallest File Size" preset is used.
The Compression settings (downsampling) have been verified and correctly set to 72 ppi.
This appears to be a regression bug introduced in version 2026 that either ignores or poorly handles compression settings or the management of vector/transparency elements during export.
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Cinzia
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Adobe InDesign Team