ImgZilla compresses images locally in batches — overwriting in place, keeping filenames and paths, never uploading to the cloud. Drop them in, let go, and watch file size shrink by up to 90%.
Privacy first: no network, no tracking, no data collection
Original size
99.9GBAll images
After compression
23.1GBJust 23.1% of the original
*Based on a test of 32,188 images
Benchmark
We tested 32,188 images: 99.9 GB in total, and only 23.1 GB after ImgZilla.
76.8%
Size reducedWhy ImgZilla
Fixed, best-in-class compression settings — no endless tweaking. Just drop your images in and leave the rest to ImgZilla.
It strips only redundant data, never touching a pixel. Extra color tables are removed, encoding is optimized, structure is repacked — pixel for pixel identical to the original, at a fraction of the size.
Sample image · before vs after
1.2 MB→ 0.2 MB
Just drag in a whole folder. Thousands of images are handled at once, with no clicking through them one by one.
Processed in one go
32,188 images
Compression runs entirely on your Mac. No network, no uploads, no tracking — your images never leave the computer.
Files are overwritten directly, keeping their name, path and extension — never breaking references in your project or web pages.
Press ⌘D to inspect before and after at pixel level. If you can't tell the difference, that's good compression.
Remove EXIF, GPS and other sensitive info in one click, so sharing an image no longer leaks your location or device.
Three steps, done
Drop it in
Drag images or an entire folder onto ImgZilla — batches welcome.
Lossless squeeze
The local engine compresses visually losslessly at optimal settings; originals are backed up to the Trash automatically.
Ready to use
Files are overwritten in place with unchanged paths — the compressed images are ready instantly.
Quality compare · ⌘D
Drag the slider and see for yourself. On the left is the compressed ImgZilla version, on the right the original — apart from file size, you'll struggle to find any difference.
Before
1.2 MB
After
0.2 MB
ImgZilla · 0.2 MBOriginal · 1.2 MBEvery format welcome
What users say
From indie developers to design teams, over 20,000 users save bandwidth and storage with ImgZilla every day.
4.9 / 5
From 1,800+ ratings
I dragged my whole website image folder in and it went from 480MB to 96MB in seconds, with no visible difference. Best little tool I've bought this year.
Zimo Chen
Indie developer
What won me over is that everything is processed locally — client product shots don't have to be passed around anymore. Originals go straight to the Trash, so overwriting carries zero anxiety.
Wan Lin
Brand designer
The ⌘D side-by-side compare is so thoughtful — a quick glance at quality before delivery and I'm reassured. One-time purchase, no subscription — I fully back that pricing.
Marcus Ye
Photographer
After batch-compressing my blog images, the Lighthouse score jumped from 72 to 98. Stripping EXIF also conveniently removed the shooting location.
He Su
Content operations
The day I installed it I slimmed down several front-end teams' build output, and app bundle size dropped noticeably. Everyone on the team has a copy now.
Qihang Zhao
Front-end engineer
Clean interface, zero learning curve — drag the images in and you're done. I've used plenty of online compressors, and ImgZilla is still the most worry-free and the safest.
Yutong Zhou
Freelance illustrator
FAQ
ImgZilla is a native macOS app. All compression happens locally on your computer — no network, no uploads, no tracking. Your images never leave your Mac.
No. Before compressing, ImgZilla automatically moves the original file to the Trash. The name, path and extension all stay the same, and you can restore it anytime.
ImgZilla uses fixed, carefully tuned optimal settings that balance size and quality, sparing you from tweaking image by image — dropping it in is already the best answer.
JPG, PNG, GIF, SVG, HEIC/HEIF, WebP and AVIF — old photos and next-generation formats alike.
Free has a daily compression quota, ideal for occasional use. Unlimited is a one-time purchase for unlimited runs and unlimited batches, and unlocks side-by-side compare, metadata stripping and more.
ImgZilla requires macOS 12.3 or later.
Installs in seconds — say goodbye to bloated image folders.
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