Lossy Compression
Compression that permanently discards some detail for smaller files.
Definition
Uses perceptual models to reduce size significantly.
Why it matters
Useful for photos where small size matters more than perfect fidelity.
Related PDFHQ workflows
Use this concept when optimizing, converting, validating, or troubleshooting document workflows.
Related Knowledge
Techniques used to reduce file size while balancing quality.
JPEG/JPG is the dominant lossy raster image format for photographs.
WebP is a modern web image format supporting lossy/lossless compression and alpha transparency.
AVIF is an AV1-based image format targeting strong compression efficiency while preserving visual detail.
The relationship between original size and compressed output size.
Tools to Apply This
Convert images such as JPG and PNG into PDF files.
Convert PDF pages into image files.
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