KITFORMA · EDITORIAL GUIDE
Why is my compressed PDF not smaller, and which compression mode should I use?
KitForma editorial guide. Structural optimization and image compression make different changes. A file that is already efficient may not become smaller.
Step-by-step guidance
Start with structural optimization in https://kitforma.com/en/pdf-compress/. It repacks the complete document without turning pages into images. It does not recompress embedded pictures; if it cannot reduce the size, it returns the original.
Image compression is a separate, lossy mode suitable when an image-only copy is acceptable. It removes selectable text, links, editable forms, bookmarks and accessibility structure. Lower resolution or quality can blur fine print, so inspect the output before sharing it. Image mode supports at most 60 selected pages.
Neither mode guarantees a smaller result. For a large file, try a smaller relevant page range or split it with https://kitforma.com/en/pdf-split/. Keep your original.
Sources and verification
Sources checked:
Scope: This editorial guide is based on the cited sources and tool behavior. A forum question or a query observed for our site does not establish market search volume, low competition, guaranteed rankings or inadequate answers elsewhere.
This starter guide was prepared by KitForma with AI assistance. It is not presented as a real member question or an independent user review. Check the sources and the result with your own file; report corrections in the discussion.