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Target size compressor
Aim below a custom whole-file size limit.
Target total file size
The output must stay below this ceiling.
Quality boundary: this method rebuilds pages as JPEG images. It removes old metadata and works best for scans and image-heavy PDFs, but selectable text and vector content become rasterized. Extremely low targets may be impossible without making pages unreadable.
The source ArrayBuffer is transferred—not copied—to a background Worker.
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