New in 2.4: Batch Workspace, multiple recipes in one batch, saved Export Recipes, Finder Open With, multi-window workflows, and ARC Pro Access.
ARC: Aspect Ratio & Resize is a focused Mac utility for image dimensions, aspect ratios, resize previews, batch image workflows, and clean exports.
Enter an original size and a new size, choose a ratio or exact frame, preview the result, then copy developer-friendly output or export finished image assets.
Use it for web assets, screenshots, social posts, product images, documentation, print-aware handoffs, App Store graphics, real estate marketing, and everyday sizing work.
What you can do:
- Calculate aspect ratios, decimal ratios, pixel counts, megapixels, and scale.
- Inspect images by dragging, pasting, choosing a file, or using Open With in Finder.
- Open multiple supported images in separate ARC windows for parallel single-image workflows.
- Drop multiple images or folders and choose Batch Workspace or separate windows.
- In Batch Workspace, review the job visually, apply different Export Recipes to different selections, preserve per-image overrides, resolve warnings, choose naming behavior, and export safe copies without modifying originals.
- Resize images to exact dimensions.
- Resize to Frame with Fit Inside, Fill & Crop, and Keep Scale.
- Adjust source placement with anchors, drag controls, zoom, and a larger Frame Placement window.
- Save and reuse Export Recipes for size, frame, format, metadata, and filename settings.
- Export PNG, JPG/JPEG, TIFF, HEIC, and HEIF when supported by macOS.
- Preserve useful export names with source-based filename templates for Save, Share, Copy Image, and Drag Image.
- Copy CSS, HTML, Tailwind, Markdown, rendered image output, and custom Pro templates.
- Organize custom ratios, saved copy formats, and export recipes into categories.
- Use Quick Ratio from the menu bar for fast math, with optional launch at login.
- Choose Follow System, Light, Dark, Blueprint Dark, or branded workspace themes.
Free users get the core calculator, image inspection, built-in copy outputs, and a monthly export allowance. ARC Pro Access unlocks unlimited exports, Batch Workspace export, saved Export Recipes, custom ratios and templates, advanced units, iCloud settings sync, workspace themes, and curated exact-size presets. Choose Annual Pro, Monthly Pro, or Mac Lifetime. Prior paid users keep honored legacy Mac access.
ARC is built for designers, web designers, marketers, developers, creators, and business users who need precise dimensions without opening a full image editor.
Terms: https://aspectratiocalc.com/terms
Privacy: https://aspectratiocalc.com/privacy
Support: https://aspectratiocalc.com/support
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It works, just buy it
iPhone Chief
Like, aspect ratios are pretty simple. And we’re talking about rectangles, not even triangles. But every time I needed to calculate it, I was typing in the formulas. I could have written a script for this but I wanted an EASY TO USE app and this is insanely perfect. Totally worth it! It’s so simple and straightforward you have to wonder why someone had to make it. If you need to do pixel dimensions or aspects ratios more than once, just buy this. You don’t need worry about golden rules or adding color pickers or some AI flipping dip whatever.
Wow! Quite the upgrade
meeps_mom
I bought this app years ago, and all of a sudden saw the huge upgrade. It’s made a small utility that saved a few seconds of time into a full blown graphic utility that I use multiple times a day. Well done!
for designers
Carmine morra
hasn't been updated in five years and runs perfect on Mojave. when designing for web i use it a bunch.
GreatAPPfor Video work
OOBProd
Does exaclty what it is supposed to do.
ARC 2.4 introduces a brand-new Batch Workspace, repeatable Export Recipes, smoother Finder workflows, and ARC Pro Access.
- Add multiple images or folders, review outputs visually, resolve warnings, choose naming behavior, and export safe copies without modifying originals.
- Apply different Export Recipes to different selections inside one batch job—for example, social images in one group and web, email, documentation, or App Store assets in another.
- Target edits to the current image, selected images, or the whole batch while keeping per-image overrides visible.
- Save, apply, update, duplicate, rename, and delete Export Recipes for reusable size, frame, format, metadata, and filename setups.
- Open supported images with ARC from Finder. Open several images in separate ARC windows for parallel single-image work.
- Drop multiple images or folders and choose Batch Workspace or separate windows automatically.
- ARC Pro Access now offers Annual Pro, Monthly Pro, and Mac Lifetime, while prior paid users retain honored legacy Mac access.
- Free users now receive a monthly export allowance.
- Settings sizing, Pack browsing, walkthrough controls, StoreKit, privacy, localization, accessibility, and visual polish were also improved.
Version 2.4
The developer, David Wolf, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Contact Info
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More