Doc2X PDF compression proof / 2026-10-10

All inputs are self-authored synthetic teaching fixtures, not customer documents.
All outputs were downloaded through the public Doc2X compression tool after source d977f51.
Input and output PDFs are included unchanged. The bundle is not an OCR result.

Settings: standard quality 75 / target 150 DPI / threshold 300 DPI; high compression quality 60 / target 120 DPI / threshold 200 DPI.
The image-heavy source is effectively 240 DPI: standard retains 1800x2200 pixels, high produces 900x1100.
Image quality is a processing parameter, not a percentage of visual fidelity.
Original title/author and document XMP cleanup, structure optimization and fast web view were enabled.
New producer/date metadata can remain. A smaller prepared selection may be retained when compression gives no benefit.

Native text remains extractable in the native-text sample. The image-only sample has no text layer before or after compression.
Page ranges refer to actual file positions: 2-3 -> two pages, 1-2,5 -> three pages, in original order.
Range size changes include extraction. Check your own files' text, images, forms, bookmarks and signatures separately.

Source: https://doc2x.noedgeai.com/zh-cn/tools/pdf-compress/
