Sf SpecFit
● Entirely on your device

SMALL FILES. CLEAR RULES.

Meet the limit.
Keep the pixels.

A batch JPEG exporter for upload forms with a maximum file size and minimum image dimensions. If the rules don’t fit, you’ll know.

01

Set the rules

Minimum dimensions

Optional. Keeps aspect ratio. Never upscales or shrinks below your minimums.

0.50

Tests 1.00 → floor in 0.05 steps. Chooses the highest tested quality that fits; quality is a browser encoder setting.

02

Add your JPEGs

Drop the whole batch here

JPEG only. No uploads, accounts, or tracking.

Up to 20 files · 20 MiB each · 80 MiB per batch
16 megapixels per image · 48 megapixels per batch

    Your requirements stay in charge

    We don’t keep shrinking until something passes. Dimensions are fixed before testing quality. Some images simply won’t fit these rules.

    Private by design. Your images stay in this tab. EXIF orientation is applied; original EXIF/GPS, IPTC, XMP and color profiles are not copied to exports. Re-encoding may change color and always loses some image information.

    Browser encoders vary. “Does not fit” means no tested quality met this specification, not that no other encoder could. Verify exports before submitting them.

    Before · scaled preview
    Original image scaled preview
    After · scaled preview
    Exported image scaled preview

    Scaled previews are for composition only. Download the JPEG to inspect full-resolution detail.