Markly is a measure and design spec plugin/extension for Photoshop & Sketch. It is made for modern web designers & app front-end developers. You can add specification marks by simple clicking and dragging. Coordinate, dimensions, distance or fonts, no matter what and where you want. Without Markly, you have to spend time to apply styles to each individual specification element. Even you can create a list of styles in your layer settings by following some steps, soon you will find it hard to maintain. The efficiently organized measurements data are saved in the metadata of your file, it ensures high maintainability and portability
Mobile developers don't use pixel (px) as web developers, however, Markly can automatically convert the measurements based on different screen density. If you create specifications directly on your layers, once you modified your design, you have to modify the marks according to your changes one by one. However, you don't have to do this in Markly. Markly will update your specs automatically when you modified your design in Photoshop or Sketch.