Decisions about web assets, measured on your file.
Every guide on the subject answers with a percentage. That percentage describes one kind of image, and a photograph, a screenshot and a logo do not behave alike. These tools measure the file you actually have — and say so when the answer is to leave it alone.
- Nothing leaves your browser
- Measured, not quoted
- Free, no account
Tools
More are planned — font subsetting, the base64 threshold, srcset breakpoints — and none is listed here before it works.