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UploadPrep

ACT test registration photo photo upload

Official requirement

Requirement verified August 11, 2026 · Source: ACT ↗

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Photograph

≥ 480 × ≥ 640 px · Up to 5000 KB · JPEG/PNG

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Sources disagree on this

  • minimum pixel orientation

    ACT prints a 640 × 480 pixel minimum while also requiring portrait orientation.

    How we handle it: UploadPrep treats 640 as the minimum long side and 480 as the minimum short side, producing a portrait image without inventing a ratio.

  • supported format subset

    ACT also accepts BMP. UploadPrep produces the official JPEG and PNG options supported by its image pipeline.

    How we handle it: Use JPEG or PNG output.