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Get the size you need without fighting the math.

Start with the original dimensions, choose the new size, check the preview, then copy or export the finished image.

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Getting Started

Type dimensions, choose a file, paste from the clipboard, drag an image in, or start with a sample.

Original Size is editable until an image is loaded.
New Size fills in the other side when Lock Proportion is on.
The bottom bar keeps the final ratio, scale, output size, copy actions, sharing, and export close by.

Use Resize Image when the file itself should become the New Size.

With matching proportions, the image scales cleanly.
If the new shape does not match, the app warns before anything gets stretched.
The suggested actions can switch to Resize to Frame or return to the original ratio.

Use Resize to Frame when the outside size is fixed and the image should not stretch.

Fit Inside keeps the whole image visible and may add padding.
Fill & Crop fills the frame edge to edge and crops only what does not fit.
Keep Scale keeps the final output size fixed while you choose how much source image lands in that frame.

Images can move through the same Mac gestures you already use.

Paste an image or image file with Command-V.
Copy Image places the rendered result on the clipboard.
Drag Image, or drag the loaded preview, to send a rendered file to Finder, Safari upload fields, or another app.

Pro adds deeper workflow tools without taking away the fast calculator.

Pro unlocks custom ratios, custom copy templates, advanced units, Blueprint Dark, iCloud sync, and advanced resize/export workflows.
Support Development purchases do not unlock features or change Pro status.
Preset packs and theme packs are planned as separate optional add-ons, with an Ultimate-style license able to include them later.

The app should stay usable from the keyboard, with VoiceOver, and in every supported localization.

Calculator fields use explicit labels and predictable tab order.
Placement controls support keyboard movement, accessible labels, and a VoiceOver-adjustable anchor grid.
Localization passes should include visible text, accessibility labels, hints, screenshots, and truncation checks.