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macOS image utility

LittleFit

Fit your images under the upload limit.

At a glance
  • Free for 3 images per batch; Pro $12 USD once
  • macOS 14 or later
  • Apple silicon and Intel
On screen

LittleFit, running

LittleFit showing image upload requirements, a list of images and a preview of an image fitted for export.
Choose the file size, pixels and format, then preview the fitted copy. The sample image is AI-generated; the export comes from the app.
The short version

What LittleFit does

When a form rejects an image for being too large, choose its file-size ceiling in LittleFit. Add the required pixels and output format if the form specifies them. Preview the result, then save a new copy.

Save the requirements as a recipe for the next upload. LittleFit checks the finished file against your chosen bytes, dimensions and format before marking it ready. Your originals stay where they are.

In detail

What you can do

What it costs

Pricing

Start with the free download. Buy Pro through Polar and paste the license key into the app for larger batches. Applicable taxes appear at checkout.

Before you start

What you need

Mac
macOS 14 Sonoma or later, on Apple silicon or Intel.
Files
Single-image JPEG, PNG, HEIC, TIFF and BMP inputs. No PDF, video, animated or multi-page images.
Output
JPEG or PNG, with a file-size ceiling from 10 KB to 25 MB. Exact mode supports 64 to 4096 pixels per side.
Privacy
Image processing stays on your Mac. No image uploads, account or analytics in the app.
Internet
Free use works offline. Pro activation requires internet and works offline for 30 days after each successful license check.
Download
Developer ID signed and Apple notarized. Download the disk image from the LittleFit website.
Common questions

Questions about LittleFit

How much does LittleFit cost?

Free includes all fitting features for up to 3 images per batch. Pro costs $12 USD once for up to 500 images per batch on your personal Macs, with version 1.x updates. Applicable taxes appear at checkout.

Will it meet a specific upload limit?

Successful exports meet the file-size ceiling, pixel rule and format you choose. If LittleFit cannot meet them, it tells you. A website can still reject an image for other requirements or its content.

Will the image look the same?

JPEG compression is lossy, and smaller targets may require smaller dimensions. Exact-pixel mode crops the center without enlarging. Automatic mode keeps transparency as PNG; explicit JPEG replaces it with white. Preview the result before saving.

What happens to my original images?

Your originals stay untouched. LittleFit writes new copies with -littlefit filenames and adds a number if a name already exists. Processing stays on your Mac.
For the next rejected upload

Try it with three images.