Resize images on your Mac
Resize by percentage, by exact dimensions, or down to a target file size like 500 KB. Batch a whole folder in one pass. Works with JPG, PNG, HEIC, WebP and more. Offline, no upload.
$29 once, updates included. No account, no subscription, works offline. Need 2, 5 or 10 Macs?
Resize images in 3 steps
- 1
Drop your images
Drag in one photo or a whole folder of them.
- 2
Pick a resize mode
Choose Percentage, dimensions, or a target file size, then set your value.
- 3
Convert
Click Convert and Picmal saves each resized image as its own file.
Everything Preview's resize can't do
Six resize modes
Percentage, Fixed Width, Fixed Height, Max Dimensions, Exact Dimensions, and Max File Size, all in one place.
Resize to a target size
Type a budget like 500 KB or 2 MB and Picmal scales the image down until it fits.
Batch a whole folder
Resize dozens of images in one pass with the same settings, each saved as its own file.
Batch resize a whole folder of images
Preview can resize a batch, and it is free, so use it when that is all you need. Select the files, open them in Preview, then Tools > Adjust Size. Automator can do it too if you are willing to build the workflow once.
Where both fall down is anything conditional. Preview applies one width to everything, so a folder mixing portrait and landscape shots comes out wrong half the time. It has no way to say "cap the longest side at 2000 px" or "get every file under 500 KB". Picmal has Max Dimensions and Max File Size modes for exactly that, and they apply across the whole batch at once.
Drop in a folder, pick a mode, click Convert. Each image is written out as its own file, originals untouched. Hundreds at a time, no upload and no per-file limit, because it all runs on your Mac.
From the people
who use it
"It's a Mac-assed Mac App. Focused, customizable, flexible, well designed and super fast. 10+ times a day I need to convert a file for use on a website. Picmal makes that process a joy. My favorite conversion is taking a multipage PDF and converting each page to an individual image with one click (something even Preview can't do)."
"Wonderfully simple app! I struggled with converting my images from one format to another constantly with online free tools. Picmal makes it effortless. Worth the money to avoid the hassle for sure!"
"I use Picmal to convert images. It works perfectly. I can just leave the Picmal window open on my desktop. Whenever I want to convert an image, I drag the file onto the window and click “convert”—and seconds later, the converted file is in the appropriate folder with the suffix “converted.” It couldn’t be easier or more hassle-free!"
"Working on a presentation and had to convert and resize a lot of images. Picmal did them all in a flash."
"I feel Picmal is one of the apps that I would categorize as essential. There are many features that distinguish the app from other web converters such as Folder Watching and Clipboard Optimization."
"Clean and easy to use. Perfect for quickly converting images without unnecessary extras."
"Everything works as expected - great app!"
"You did a great job here! I like how easy Picmal is to use, and the frequent upgrades show that you are very committed to improving this beautiful software."
"I f* love this app. Just so you know. Keep building!"
"I like the interface. I like the batch processing. I like the fact in the I can set default conversions. I like your program a lot."
"I like the quality of the image processing. It also supports all the important image files. But it still needs some work regarding both the UI and the UX design of it."
"I love how Picmal's made compressing videos a frictionless, easy and straightforward."
"It's simple to use and does everything I need it to do. Hell, it does much more than I need and the developer keeps adding features :)"
"I love the app! I use it 4-5 days a week for audio and image conversion as I tag and add missing album artwork to my library of 70,000 songs. After that is done, I would like to try it out with my Blu-ray collection on Plex. I truly appreciate the hard work that goes into creating and frequently updating an app such as this. All the best!"
"The program is very simple and practical, and its options are clear."
"Thoughtful, polished, and constantly improving. Alberto genuinely listens to feedback, and it shows in Picmal. Easy 5 stars."
"Picmal is simple and fast but also integrates complex workloads if needed."
"Picmal is complete. The quality is good, and it does exactly what I need."
"Easy to use, automation & batch processing. AVIF & Webp support"
"keep up the great work! Very cool tool you've built here."
"Simple and powerful is a combination that is hard to get right. Picmal nails it! I find image presets particularly useful. Set it up and then just drag and drop to resize and convert."
"Me ha sosprendido la compresion que realiza el programa y si apreciar la calidad."
"The easy going workflow"
"I just sent a few samples through to check everything, and I am very pleased with the results. Everything worked correctly and above all it was easy and not unduly complicated."
Pay once and you're all set
Already own Picmal? Add more Macs
How many Macs?
2 Macs is $10 more
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Convert, compress and edit images, video, audio and PDFs
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Everything runs on your Mac, nothing gets uploaded
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Use it on 1 Mac
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Command line tool, Raycast extension and watched folders
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Free updates forever, no subscription
14-day refund after you buy, no questions asked. Needs macOS 15 or later.
More than 10 Macs? Email me.
How does the license work?
You pay once and keep it. No renewals, no subscriptions. Your license activates on the number of Macs you bought it for, and you can move it to another Mac whenever you want. Prices are in USD, tax is added at checkout, and you pay through Stripe.
I bought Picmal and now I need more Macs. Can I upgrade?
Yes, and you only pay the difference. Going from 1 Mac to 2 is $10, 2 to 5 is $50, 5 to 10 is $60, and every other jump works the same way. Enter your license key here and the same key covers more Macs. The offer never expires, so starting small is never the wrong call.
What happens if I get a new Mac?
Open Picmal on your old Mac, go to Picmal → Register license to deactivate, then activate on the new one. Takes about ten seconds.
Do you offer student or country discounts?
Yes. I want Picmal to be affordable wherever you are. Students and educators get 40% off: verify your school email on the education page and the code lands in your inbox. If the price is steep for your country, checkout already adjusts it for you. If it still doesn't work, email support@picmal.app and tell me where you are, and I'll send a code.
Frequently asked questions
Something not covered here? Write to support@picmal.app
How do I resize an image on my Mac?
Drop the image into Picmal, choose a resize mode like Percentage or Fixed Width, type your value, and click Convert. Picmal writes out the resized image as a new file.
Can I resize a whole folder of images at once?
Yes. Drag in dozens of images or an entire folder and Picmal resizes all of them in one pass with the same settings, each saved as its own file. That's the part Preview can't do.
Can I resize an image to a specific file size?
Yes. When an upload form or an email attachment has a size limit, pick the Max File Size mode, type a target like 500 KB or 2 MB, and Picmal scales the image down until it fits under that budget.
Can I resize by exact dimensions or by percentage?
Both. Picmal has six modes: Percentage, Fixed Width, Fixed Height, Max Dimensions, Exact Dimensions, and Max File Size. Set a hard width and height, cap the longest side, or scale everything by a percentage.
Does resizing an image lose quality?
Making an image smaller keeps things sharp, you're just discarding pixels you didn't need. Blowing a small image up past its native size is where quality drops, since there's no extra detail to invent. You can also set DPI when the output needs a specific resolution.
Does Picmal keep the aspect ratio?
Yes, by default. Percentage, Fixed Width, Fixed Height and Max Dimensions all keep the original proportions so nothing looks stretched. Use Exact Dimensions when you deliberately want a precise width and height.
Are my images uploaded anywhere?
No. Picmal resizes them on your Mac. There's no upload, and no limit on how many you drop in.