Change Default Render Output to JPEG with 98% Quality Whenever I save a render to my disk, I typically save it in JPEG format because the vast majority of the time, JPEG saves faster and smaller than the default format, PNG with RGBA color mode.

Because JPEG is a lossy compression codec, I usually set the quality to 98% instead of the default of 90%, since at 98% there is usually little or no loss of quality, and (as a bonus) it can sometimes reduce noise in cycles renders by a tiny bit.

However, each time I save a render, I have to first change the output format to JPEG, and then change the image quality from 90% to 98%.

Is there any way I can set the default image save format to a JPEG with 98% quality?
Open a new project and change the output format to JPEG 98% quality in the render settings panel:



Then, from the File menu, choose "Save Startup File" (or press CtrlU).  That will make your compression setting the default for all new projects, and for images saved from the UV/Image editor window.