Compress JPEG files on Windows or Mac
Reduce JPEG file size with our JPEG Compressor for Windows and Mac. Fast, reliable compressor with no size limits, and you can compress images in bulk.
- Instant download — no email required
- Over 3 million users worldwide
- 14-day free trial
Also available JPEG Compressor Server
Trusted by 3+ million happy customers
“It is my go-to software for reducing the size of photo files. I have a full-frame, 46 Megapixel digital camera and use NXPowerLite to reduce the size of my post-processed photographs. The average file reduction is typically 75-85% with absolutely no loss in quality. I LOVE THIS PRODUCT!!”
— Charles Greear
Software features
Offline JPEG compressor
Compress JPEG images on your local Windows or Mac computer, without the need for an Internet connection. It's 100% offline software.
Compress multiple JPEG
Our bulk JPEG compressor can reduce the size of up to 10,000 JPEG images at a time.
Compress Images for Email
Sending files as attachments? Automatically reduce JPEG size with our Microsoft Outlook integration. No more bounce back or exceeding mailbox limits.
Optional Zip Compression
See your JPEG files reduced by up to 95% before selecting additional zip compression from the results screen to zip files together.
Maintain Visual Quality
NXPowerLite decodes & re-encodes JPEGs more efficiently, allowing it to compress photos without altering resolution.
Windows or Mac
Shrink JPEGs straight from Explorer or Finder for maximum ease. Simply right-click a file and choose from the optimization options.
This straightforward and easy to use application certainly makes it easy to optimise images, while maintaining clarity. I've found it perfect to quickly prepare images for the web, saving time without the need to go into a heavy duty application such as Photoshop.
— Quaetapo
How to compress JPEG files with our compressor?
Follow these steps to compress your JPEG files:
Install the NXPowerLite Desktop JPEG Compressor software.
Drag one or more JPEG files onto the NXPowerLite icon.
Hit the 'Optimize' button to reduce file size.
NXPowerLite will compress and deliver you a smaller image.
Frequently Asked Questions
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Compress up to 10,000 JPEG files at a time. Great for compressing small folders of content quickly.
For larger volumes of files we recommend our Server Compressor software.
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Yes, we offer a fully functional 14-day free trial without any sign-up. Once installed, your trial will be automatically activated, and it'll work just like the full software without adding any watermarks. The only limitation is a batch size of 20 files, compared to the 10,000 files that the paid version can compress.
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NXPowerLite Desktop costs just $57 one-off cost for a single user.
NXPowerLite is licensed per user rather than per machine, so if you buy a license you can install it on up to 3 machines so long as you are the only user of the software.
Licenses are perpetual, so they don't expire. Once you buy a license you can use that major version of the software for as long as you want without paying additional fees.
Volume discounts start at 10 users, so the more licences you buy the less you pay per user. Visit our support site for more information on multi-user licensing.
If you work at a non-profit then simply email us with your work email address to verify your details and we will send you a discount code.
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Windows
Windows 7 and above
NXPowerLite integrates with 32 & 64-bit versions of the following applications (Versions 2007 - 2024 & M365):
Microsoft PowerPoint
Microsoft Word
Microsoft Excel
NXPowerLite can automatically optimize email attachments in the following email clients:
Microsoft Outlook (2007 - 2021 & M365) [32-bit & 64-bit]
macOS
macOS 26 (Tahoe)
macOS 15 (Sequoia)
macOS 14 (Sonoma)
macOS 13 (Ventura)
Version 10.0.2 supports macOS 11 - 14
Version 9 supports macOS 10.15 - 13
Version 8 supports macOS 10.12 - 10.14
Version 7 supports macOS OS X 10.10 & 10.11
Version 6 supports OS X 10.9 or earlier.
How the JPEG compressor works
Most JPEG images are produced by digital cameras, which are optimized to preserve as much information as possible in order to allow the image to be edited and post-processed. Most of this information is not visually detectable and unnecessarily increases the size of the file. NXPowerLite uses a number of techniques to reduce the amount of data in JPEG files, resulting in impressive size reduction without discernible loss of quality.
NXPowerLite can reduce the file size of your JPEG photos by more than 50% without resizing them.
It decodes and re-encode JPEGs using more efficient settings. This can substantially reduce the file size without reducing the image resolution and without changing the perceptual quality of the image.
This lossy compression approach does create slight pixel differences in the before and after file. If you analyze the uncompressed and compressed images with a computer using a threshold algorithm, you can see minor differences — but by eye, they look identical.
Printing optimized images
Image resolution is the main factor when considering how images will print - if the resolution is too low then it negatively affects the print quality. By default NXPowerLite doesn't change the image resolution, so you can be comfortable that images will still look great when printed.
Image comparison
With this image you can see that the resolution hasn’t changed but after compression with NXPowerLite it is less than half the file size. Click links to download the example files.
How it works
Where appropriate, NXPowerLite applies additional JPEG compression to images. The default setting (8) will result in an undetectable loss of quality, even at 100% zoom or when printed.
NXPowerLite uses a number of additional techniques to reduce the amount of data in JPEG files, resulting in impressive size reduction without any discernible loss of quality. These techniques include optimized Huffman coding and Chroma subsampling.
Note: By default JPEG images are not resized as part of the optimization process and EXIF metadata is preserved.