User interface
Free PNG images in the category “User interface”: 2 files with transparent background, no sign-up.
A minimalist black glyph: a thin vertical line with an arrowhead pointing up, rising from a solid filled circle — the gesture sign for swiping upward.
Filters
User interface among the icons
Button covers individual clickable shapes and Menu the navigation lists. User interface is broader: glyphs for gestures and actions, whole screen layouts, form elements, sliders, toggles and templates of web pages and apps.
Gesture icons and templates
Single glyphs like this swipe-up mark belong in onboarding screens and help pages that teach people how to use an app. Complete screen templates are for mock-ups, portfolio pieces and presentations of a design concept.
Keep a family together
Interface icons only look right next to each other when line weight, corner radius and fill style match. Combining a heavy filled glyph with thin outline ones makes the screen look patched together, so check the neighbours before adding a new icon.