Validating a test
Test on demand or automate testing throughout development lifecycles.
Easily integrated into existing Dev stacks using their partnership integrations and REST API.
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, Math ML, etc.
As such, it is a measure of related to perceived image sharpness in a print or display.
SQF and Acutance measure perceived sharpness as a function of print or display height and viewing distance using formulas that include MTF, assumptions about viewing distance (often proportional to the square root of the print height, but other options are available) and the human visual system (the human eye’s Contrast Sensitivity Function.
in the LFAQ section; there are also articles about web site testing and management in the 'Resources' section.
Apica - Apica offers flexible self service and full service load testing able to test 2MM concurrent users, through a network of 50 locations around the world.