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Mozilla Firefox 156 Optimizes JPEG Image Handling to Cut Memory and CPU Usage

Mozilla has released Firefox 156 featuring optimizations for processing large JPEG images on web pages. The browser now consumes less RAM and CPU time when sites display downsized versions of high-resolution photographs. The improvement targets scenarios where images are scaled down by page scripts rather than decoded at full size first. No single percentage improvement is provided because results vary with file sizes, image counts, and hardware. A separate enhancement makes the built-in PDF viewer launch up to 45 percent faster, with the biggest gains on first open when components load. The update becomes available on September 15 for supported desktop platforms and can be obtained through the About Firefox menu.