CSS Box Resize Generator

Client-sideNo sign-upFree

Pick a resize and overflow value and get a real, draggable resize handle in the live preview.

Quick facts

Category
Generators
Best for
Making a textarea, panel, or card user-resizable without writing JavaScript
Resize settings
The CSS resize property only takes effect on an element whose overflow is something other than its default, visible value - that is why this tool pairs resize with an overflow dropdown (auto, hidden, or scroll) rather than leaving overflow at its default.
Live preview (drag the corner/edge handle)
This box uses real native CSS resize - drag its handle to resize it directly, no JavaScript involved in the resizing itself.
CSS
resize: both;
overflow: auto;
In-content slot
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Overview

Choose a CSS `resize` value (none, both, horizontal, or vertical) and an `overflow` value (auto, hidden, or scroll), then drag the live preview box directly using the browser's own native resize handle - the preview is not a JavaScript drag simulation, it is the real `resize` CSS property doing the resizing. The `resize` property only has a visible effect on an element whose `overflow` is set to something other than the default `visible`, so this tool pairs the two controls together and calls that out explicitly rather than leaving overflow untouched and leaving you to wonder why the handle never appears. Useful for building a resizable textarea, panel, or card without needing JavaScript. Runs entirely client-side.

Best for: Making a textarea, panel, or card user-resizable without writing JavaScript

How to use this tool

  1. Pick a resize direction. none, both, horizontal, or vertical.
  2. Pick an overflow value. resize only works when overflow is not the default visible.
  3. Drag the real handle. The preview box uses the actual CSS resize property - drag it directly.

Frequently asked questions

The CSS `resize` property requires `overflow` to be something other than its default `visible` value. Set overflow to auto, hidden, or scroll and the handle will appear.

No - the preview box uses the real, native CSS `resize` property. Dragging its handle is native browser behavior, not a simulated drag handler.

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