concept

Raster graphics

Images stored as a fixed grid of coloured pixels.

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Raster graphics explained

A raster image is a rectangular array of pixels with a fixed width and height. Photographs, screenshots and scans are inherently raster because they sample a continuous scene.

Enlarging a raster image invents pixels that were never captured, which is why upscaling looks soft or blocky. Reducing size is safe and often improves apparent sharpness.

JPEG, PNG, WebP, AVIF, GIF, BMP and TIFF are raster formats.

Raster graphics scores

Deterministic scores calculated from the structured facts above. Identical facts always produce identical scores.

Overall score

100/100

  • Archiving score

    100
    • it is a current, actively maintained format
    • it is actively maintained and current

    Confidence 33% · evidence coverage 56%

  • Longevity score

    100
    • it is actively maintained and current
    • it is a current, actively maintained format
    • it sits at the centre of the format ecosystem, with many documented relationships

    Confidence 35% · evidence coverage 75%

Data quality

Every claim on this page is classified as a verified fact, a derived fact or an assumption.

Overall confidence
85%
Verification status
verified
Last reviewed
2026-08-03
Verified facts
1

1 classified claim backed by 1 source.

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Sources and review status

Review status: verified · confidence 85%

Last reviewed 2026-08-03 (revision 1).

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