The table below summarizes the file size reduction ratios achieved by JPEGmini for various photo resolutions.

Combining these two components enables JPEGmini to achieve an extremely high recompression ratio of up to 5x, or 80% reduction on digital photos, depending on their resolution. The second is a unique JPEG encoder, which adapts the JPEG encoding process to the original photos, creating the most compact representation of the photos that is possible under the JPEG standard. JPEGmini technology has two main components: The first is an image quality detector, which imitates the perceptual qualities of the human visual system, to determine the maximum amount of compression which can be applied to each individual photo without causing visible artifacts. This enables fully automatic, maximal compression of photos with no human intervention required. The JPEGmini algorithm imitates the perceptual qualities of the human visual system, ensuring that each photo is compressed to the maximum extent possible by removing redundancies, without creating any visual artifacts in the process. JPEGmini is capable of reducing the file size of standard JPEG photos by up to 80% (5X), while the resulting photos are visually identical to the original photos. The technology works in the domain of baseline JPEG, resulting in files that are fully compatible with any browser, photo software or device that support the standard JPEG format. (I'm not connected with it I've just been following the project for a long time.) There just wasn't a good reason to back-port the changes to the budget/free option and then cripple it if a bargain version with pretty reasonable limitations could still sell and a free 'good will' version was still a useful introduction - $20 is better than a lost sale, and while the code base is clever, it's not big (apart from the UI), so maintenance stays reasonable as well.JPEGmini is a patented photo recompression technology, which significantly reduces the size of photographs without affecting their perceptual quality. (I also believe it's 64-bit only, so it won't run on some older machines, but I could be wrong there.) It's more of a GUI-enable port of the server version than an enhanced version of the Standard, as I understand it. It happened after a 'side project' that was meant to make a small additional income turned out to be a little more in demand than the author had imagined, with demands for better performance. No, the Pro is essentially a re-write of the Standard using different memory allocation and multi-threading/multi-processor. I find it as useful for sending stuff to a print service as I do for the web. Results vary by image, of course not every image has areas that can take a lot of additional compression. In general, you hand it a '12' or a '100' (depending on the program you used to do the original JPEG), and it gives you back a file that looks the same (you literally have to do a diff in order to spot anything), but is about the size of an '8' or a '70'. JPEGmini (and similar programs) go through an existing (high-quality/low-compression) JPEG image looking for blocks that can be compressed more without damaging them, while leaving high-detail blocks alone.

If you want more compression, you get worse results in parts of the image that can't stand it. JPEG can use different compression levels in each image block, but most JPEG compressors/encoders do a single global compression (where each 8x8 block is compressed at the same level). and it's not so much 'higher compression' as 'variable compression'. The JPEGmini Pro bundle, with Photoshop extension and Lightroom plug-in included, retails for $100. Head over to the company's website to learn more or download a free trial of the software to try for yourself. If you have a huge archive of medium format JPEGs lying around and you're looking to save some space, JPEGmini Pro is definitely worth a look. The folder of images that was just compressed will export to a folder named 'Resized' in Small, Medium and Large versions.įor now the feature is limited to Mac users, but JPEGmini Pro for PC will get this update soon. JPEGmini also added the ability to export compressed files in a variety of sizes-from preset sizes Small (960 x 720), Medium (1600 x 1200) and Large (2592 x 1944), to custom sizes set by max width, max height, or exact dimensions. A 100MP sample image downloaded from the Hasselblad website was quickly compressed from 52MB to just 15MB, and you would be hard-pressed to spot the difference between the two versions.īut increased image size capability isn't the only feature added in today's update. The update launched earlier today, and in our brief test it works like a charm.

Jpegmini pro