Voralent Antelope

Reduce the file size, Keep the quality.

Make small without losing quality

Voralent Antelope is a simple free software which rewrites JPEG and PNG filess to reduce their size, without losing any image quality.

Version 5.2, March, 11th, 2015

More efficient. More easy.

Please drag drop your pictures folder including JPEG or PNG files into the Antelope. And then, push the Optimize button. Antelope will optimize files on same location.


Can you find the difference?

Photo of three of the following is a sample that is optimized by Antelope. Compared with the original file obtained from the memory card, in the lossless mode reduces file size of 30%, and also in the lossy mode reduces file size of 60%. Notice the photos in lossy mode. File size is lower than half, but can you find the difference between lossy mode and original? * You can see the actual files by clicking on the image.

100% (control)
Type: Jpeg file
Dimensions: 3,568px x 2,000px
File Size: 4.25 MBytes
Lossless Mode:
30.92% decreased
Type: Jpeg file
Dimensions: 3,568px x 2,000px
File Size: 2.93 MBytes
Lossy Mode:
(MozJPEG 3.0)
79.87% decreased
Type: Jpeg file
Dimensions: 3,568px x 2,000px
File Size: 876 KBytes

Camera: Sony α NEX-5N, © Photo by Aki Miyamoto

Optimize result became easy to understand.

When optimize processing completed, the compression ratio will see graphically.


Preview Mode

By double-clicking an item on the list, you can see a preview of the image.


Option Menu

Antelope inherits the ONEMenu concept. Also, you can be done in this panel setting of lossy compression mode newly added.


System requirements


Intel® Pentium 4® AMD Athlon® 64 processor
Microsoft Windows Vista (32bit/64bit)
1GB of RAM
XGA(1024 x 768) display


Intel® Corei5® AMD Athlon® 64 processor (2GHz or faster)
Windows 7, Windows 8
2GB of RAM
1366x768 display