Compressed image size estimator

How to use the Compressed image size estimator

What does the Compressed image size estimator do?

Apply an estimated percentage to raw bitmap size; It applies this page-specific rule: the raw bitmap size is multiplied by the entered percentage of raw size.

Which inputs does this estimator use?

To apply an estimated percentage to raw bitmap size, enter Width (px), Height (px), Bits per pixel, Compressed % of raw; keep every value in the same example; select Calculate when the values are ready; Start with a familiar case covered by this rule - This provides a planning estimate when you already have a rough compression ratio - so the expected result can confirm the settings.

How should the estimator result be read?

For a result intended to apply an estimated percentage to raw bitmap size, this provides a planning estimate when you already have a rough compression ratio; read compressed % of raw together with the original width (px) rather than as an isolated answer, and confirm that its units or structure match the intended use.

What calculation does this use?

When the goal is to apply an estimated percentage to raw bitmap size, the raw bitmap size is multiplied by the entered percentage of raw size.

Why might a real result differ?

When using the page to apply an estimated percentage to raw bitmap size, image content, codec, quality, metadata, and chroma settings can produce very different files.

Limits and accuracy

When using this estimator to apply an estimated percentage to raw bitmap size, image content, codec, quality, metadata, and chroma settings can produce very different files; the result is an estimate unless every source value is known; codecs, metadata, overhead, and variable bitrates can change an actual file; keep width (px) until the output has been checked in its intended destination. For a repeatable check when you need to apply an estimated percentage to raw bitmap size, record Width (px) alongside the final output and selected options.