PDF strict / balanced / maximum differences
The best mode depends on how strongly you prioritize visual fidelity over file-size reduction.
Strict
Strict focuses on safer cleanup and optimization steps first. It is the right starting point when visible output should remain as stable as possible.
Balanced
Balanced aims for more size reduction and may rely more on image-focused optimization. It is useful when strict mode does not save enough space.
Maximum
Maximum is for aggressive reduction. It should be reserved for cases where the smallest possible output matters more than preserving every subtle detail.