UltraBox Screenshot

A powerful screenshot tool with resizable selection, full-page, and visible-area capture modes.

Capture visible area, full pages, or custom selections. Export as PNG or JPEG with quality control. Copy to clipboard. Keyboard shortcuts. Full description: UltraBox Screenshot is a clean, fast screenshot tool for Chrome with three capture modes and precise selection controls. CAPTURE MODES • Visible Area — captures exactly what's in the viewport • Full Page — scrolls and stitches tiles seamlessly for long pages • Selection — drag a resizable bounding box with pixel-perfect inputs SELECTION CONTROLS • 8 resize handles + drag to move • Width/height number inputs for exact pixel sizing • Arrow keys nudge 1px, Shift+Arrow nudge 10px • Overlay auto-hides so it never appears in the screenshot EXPORT OPTIONS • PNG (lossless) with adjustable quality via colour optimisation • JPEG (compressed) with quality slider (50–100%) • One-click Copy to clipboard without saving to disk KEYBOARD SHORTCUTS • Ctrl+Shift+S — open popup • Ctrl+Shift+D — start selection mode directly • Enter — capture, Esc — cancel (customisable at chrome://extensions/shortcuts) No ads, no tracking, no account needed. Works offline.