Zipic is a native Mac image compressor from 5KM Tech that shrinks JPEGs, PNGs, WebPs, and other formats without making you squint at the results.
What is Zipic?
Zipic is a dedicated image compression app for macOS, designed to reduce file sizes while preserving visual quality that your eyes can actually trust. Where most compression tools force a painful trade-off — either you keep quality and barely reduce size, or you nuke the quality to hit a small file — Zipic earns its spot in the Dock by threading that needle consistently. It runs entirely on your Mac; nothing is uploaded to anyone's server.
5KM Tech built Zipic with a clear opinion: compression should be invisible friction. Drag in a folder of product screenshots, walk away, come back to files that are 60–80% lighter and still look great on a Retina display. That proposition is straightforward, and Zipic delivers on it.
What does Zipic do best?
Zipic excels at batch compression with sane defaults — drop a whole project's worth of assets and trust it to make the right calls without babysitting every slider.
The workflow is the feature. You can drag directly from Finder, configure per-format quality thresholds, and either overwrite in-place or output to a separate folder. Support spans JPEG, PNG, WebP, HEIC, and TIFF, covering the everyday toolkit of a designer, developer, or blogger. There's also a right-click Share extension for quick one-off compressions without opening the full app window. I've used it to prep hero images for the web and to trim screenshot attachments before emailing — both cases feel equally at home.
Compared to squeezing images through a browser tool like Squoosh, or batching via ImageOptim, Zipic feels faster to reach and faster to finish. ImageOptim is the obvious free rival, and it's still excellent; where Zipic pulls ahead is in its cleaner UI and its handling of newer formats like WebP and HEIC out of the box.
Is Zipic free?
Zipic is free to download with a functional free tier, and a paid upgrade unlocks higher compression limits and additional format options.
The freemium structure is generous enough for occasional use — you can compress a meaningful number of images without spending anything. Power users who process assets daily will hit the free ceiling and find the upgrade worthwhile. Pricing is set by 5KM Tech directly through the Mac App Store; check the listing for current tiers, as these can change. There is no subscription complexity here: it's a straightforward one-time or tiered purchase model, not a monthly SaaS drain.
Who should use Zipic?
Zipic is built for Mac users who regularly ship images to the web, send assets to clients, or manage media-heavy projects — anyone for whom bloated PNGs are a recurring nuisance, not a once-a-year problem.
Indie developers bundling app screenshots, bloggers optimising featured images before publishing, and designers handing off assets to developers will all find Zipic earns its keep. If you're already comfortable with ImageOptim and happy with its output, you may not need to switch — but if you want HEIC and WebP support with a more contemporary interface, Zipic is worth a look. It is not a replacement for a full image editing suite like Pixelmator Pro or Photomator if you need to resize or colour-correct before compressing; those workflows still need a proper editor first.
How does Zipic compare to ImageOptim?
ImageOptim is free and open-source with a long track record; Zipic is a polished freemium app with broader modern-format support and a more refined drag-and-drop interface.
Both live in the same niche and do the core job well. ImageOptim leans on battle-tested open-source codecs under the hood and will always be free. Zipic's edge is in its native SwiftUI feel, its WebP and HEIC pipelines, and its output-folder workflow that keeps originals untouched by default — a safety net ImageOptim makes you opt into. If price is the sole criterion, ImageOptim wins. If you want a tool that feels like it shipped alongside macOS Ventura and handles the formats you're actually using in 2026, Zipic is the better daily driver. Neither touches Compressor.io or similar cloud tools, which require an upload and surrender local privacy.
What are the best Zipic alternatives?
The strongest alternatives on Mac are ImageOptim (free, open-source, JPEG/PNG/SVG/GIF), Squash (paid, polished, similar feature set), and browser-based Squoosh (free, Google, WebAssembly-powered, requires upload).
For developers comfortable with the terminal, pngquant, mozjpeg, and cwebp are scriptable and free, but they demand setup time Zipic eliminates entirely. If you're already in an Automator or Shortcuts workflow, those CLI tools compose well; if you just want to right-click and shrink, Zipic and Squash are the two native GUI options worth comparing.
