Responsive Layout Sketcher
Sketch a clean grid for phone, tablet and desktop. Arrange each breakpoint independently, preview any width and export usable HTML and CSS.
How can I design and preview a responsive grid layout?
Add labelled content panels, then choose the phone, tablet or desktop arrangement. Drag and resize panels or enter exact grid positions; each arrangement is saved independently. Set breakpoint widths and column counts, preview widths from 320 to 1,920 pixels, and see which arrangement applies. Export a complete responsive HTML file, its CSS, or an editable project backup. Everything stays in your browser.
An idea, at every size
Room for the important things
4 / 40 panels
Opening local project…
Arrange desktop · 12 columns
Drag Move, or use its arrow keys to move and Shift + arrows to resize. Enter opens exact settings. The editor scales to this screen; the preview below uses the requested pixel width.
Document order · keyboard and screen readers
All arrangements share this reading order. Dragging a panel changes its visual position only. Reorder the list to keep keyboard and screen-reader navigation understandable.
- A clear introduction
- The main story
- Alongside
- A thoughtful finish
See the space change
Preview the saved layout at an exact width. Changes in the editor appear here after saving.
1100 px · Desktop arrangement · 12 columns
72 px rows, 16 px gaps and padding. Scroll the preview or a panel to see overflow. The HTML export applies the same rules to the real browser width.
Responsive CSS
Private, local and editable. Keep a project backup; browser storage is not encrypted or permanent. Exports contain plain text and CSS, with no scripts or external assets.
Three simple steps
How to use Responsive Layout Sketcher
Add panels and edit their labels, text and document order.
Arrange phone, tablet and desktop grids independently, with pointer or keyboard controls and exact position fields.
Preview widths and breakpoint boundaries, then download responsive HTML, CSS or an editable project backup.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
Up to 40 plain-text panels, three breakpoint arrangements, 4–12 columns per arrangement and 120 rows. Panels span 2–12 rows and at least two columns. Tablet and desktop thresholds must be increasing whole widths from 320 to 1,920 pixels. The preview and exported HTML use 72-pixel rows, 16-pixel gaps and padding, with scrollable panels. This is a layout prototype; no arbitrary HTML, scripts, images or live widgets are embedded. Visual grid order may differ from keyboard/screen-reader order: the panel list controls document order. Automatic reflow keeps reading order but does not preserve exact positions. Saving is local, unencrypted and can be cleared; keep a project backup. No offline startup or shared editing is provided.