The ImageTool blog
Practical tips on image compression, product updates and engineering notes.
RSSImgZilla Test (3): Can Compressed JPEG Still Go into Post-Processing? A Photographer's Perspective
The first two articles calculated 'how many GB saved and how much money that's worth.' This article doesn't talk about the bill; it only answers the one question photographers really care about: When you hand a JPEG to ImgZilla, what exactly does it change, and what is the price you pay for those ch…
Read more →ImgZilla Real-World Test (Part 2): How Much More Can 30,000 Straight-out-of-Camera JPEGs Be Compressed?
The previous article tested finished images that had already been compressed once by a website, and ImgZilla saved another 46.8%. This article goes to the opposite extreme: original photos straight out of cameras and phones, never processed by any tool. Again, no industry statistics are cited—only o…
Read more →ImgZilla Benchmarked: How Much More Can You Squeeze From Images Already Compressed Once?
Compression tools often boast unverifiable claims like reducing file size by 70%. This article does not rely on any industry statistics. It presents a real benchmark result and documents the complete comparison method so anyone can reproduce it. Test subject: not untouched original images, but image…
Read more →Lossless Image Compression for Websites: Not Just Performance, but Cost and Experience Considerations
Images are the visual face of modern websites, but they are also the biggest culprit behind slow page loads. According to HTTP Archive's image data report, image resources on modern web pages have commonly reached MB-level sizes. For image-heavy websites, without proper optimization, images can quic…
Read more →Why Your Images Need Compression: More Than Just Saving a Few Gigabytes of Disk Space
Images are everywhere in daily computer use, website management, and content creation. Yet have you noticed that a quick phone photo can be several megabytes or even over ten, and high-resolution images on web pages are astonishingly large? Is image compression really necessary? The answer is yes. W…
Read more →ImgZilla Review: Perfecting In-Place Compression
When compressing images, the two things people fear most are changed filenames and lost originals. ImgZilla handles both. 1. What is ImgZilla? A native macOS image compression tool released on July 27, 2026. Core behavior: compress images in place—filename, path, and format all stay unchanged, with…
Read more →ImgZilla 1.3 Officially Released: Why an In-Place Compression Tool Took So Long
Today, ImgZilla 1.3 is officially available on the Mac App Store. Its core function is clear: compress images on your Mac in place—file name, path, and format remain unchanged, and the original goes to the Trash by default so you can restore it anytime. All of this happens on your own Mac...
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