Open SKETCH files online
Sketch is the macOS UI/UX design format. Internally it is a ZIP that bundles an export-ready preview image, which this viewer extracts and shows instantly.
Drop a SKETCH file to open it
or click to choose — everything stays on your device
Choose file🔒 100% private — files never leave your browser
Or turn SKETCH into an image — snapshot the preview, add arrows or notes, and download a PNG.
What is a SKETCH file?
Sketch is the macOS UI/UX design format. Internally it is a ZIP that bundles an export-ready preview image, which this viewer extracts and shows instantly. The .SKETCH extension identifies a Sketch document file, which is served with the application/zip media type. You can open it here instantly — drop the file into the box above and it renders in your browser. Nothing is uploaded.
Besides this free online viewer, you can open Sketch files in desktop apps such as Sketch (macOS), Figma (import) — but here all you need is a web browser.
Quick facts
| Format | Sketch — Sketch document |
|---|---|
| File extensions | .sketch |
| MIME type | application/zip |
| Developer | Bohemian Coding |
| Category | Images |
| Also opens in | Sketch (macOS), Figma (import) |
How to open a SKETCH file online
- Click Choose file above, or drag your SKETCH file onto the box.
- The right viewer loads automatically and renders your file.
- Read, scroll or page through it. To open a different file, choose Open another file.
100% private — files never leave your browser.
Libraries used to render SKETCH in the browser
This viewer is built entirely with open-source JavaScript that runs in your browser:
Frequently asked questions
What is a .SKETCH file?
A .SKETCH file is a Sketch document, identified by the application/zip media type. You can open and read it instantly in the viewer above without installing anything.
What programs open SKETCH files?
On the desktop, SKETCH files typically open in Sketch (macOS), Figma (import). Online, this page opens them in any modern browser — nothing to download.
How do I convert SKETCH to an image?
Use Snapshot to capture the SKETCH preview, optionally add arrows, text or highlights, then download it as a PNG image.
Is it safe to open my SKETCH file here?
Yes. The file is read and rendered entirely by JavaScript inside your own browser. It is never uploaded to a server, so nothing leaves your device.
Do I need to install anything to view a SKETCH file?
No. There is nothing to install and no account to create. Open the page, drop your file, and it displays instantly.
Does it work on my phone or iPad?
Yes. The viewer is fully responsive and works in modern mobile and tablet browsers such as Safari and Chrome.
Is there a file size limit?
There is no hard limit, but very large files depend on your device’s memory. Big files are processed in the background so the page stays responsive.