Leica SCN Slides in the Browser
Open the slides your Leica SCN400 saves, as they are. Nothing to convert, nothing to upload. A large slide starts showing right away, because the viewer reads only the part you look at.
How It Opens
- One file on your disk, in any browser. Drop it on the viewer, or click Open Image and Choose File. See Local Files.
- A folder of slides, in Chrome and Edge. One slide opens, several show a list. See Local Files.
- An address:
https://,s3://orgs://. Paste it under Open Image. See Remote URLs. - Private data, with a private link or a token. See Private Images and Slides.
What You Will See
- Regions. A slide can hold several scanned regions. Pick one from the list, such as Region 1 (40x).
- Macro. It appears under the title. Click it to enlarge it, and turn it if needed. A label may show patient details. The viewer shows it and never saves or sends it.
- Fluorescence. Each channel opens with its own colour and contrast.
- Colour profile. A slide that carries its scanner's colour profile is drawn with it. ICC in the RGB settings turns it off. See Channels.
- Z-stacks. The first plane opens, with a note.
- Pixel size and magnification. Both come from each region, so measurements read in µm and the zoom bar shows the objective. To set your own, see Pixel Size and Magnification.
If a Slide Does Not Open
The viewer tells you why.
| What the file has | What the viewer says |
|---|---|
| JPEG 2000 or another compression | This SCN file uses a compression the viewer cannot read yet. |
Annotations
Import GeoJSON or OME-XML, and export both, from the Annotations panel. Send a link that opens the slide with its annotations. Exchanging Annotations shows how. To draw, measure and label shapes on the slide, see Annotations.
Public Slides to Try
OpenSlide shares test slides in its Leica folder. Download a slide, then drop it on the viewer. They are marked distributable.
For Your IT Team
To open a slide by address, the server must answer byte-range requests and allow them through CORS. For a bucket, allow GET and the Range header in its CORS rules. What the Server Needs has the details.
When a server cannot send parts of a file, the viewer says so. Download the slide and open it from your computer.
Addresses that start with s3:// and gs:// work too.
Image credits
The screenshot uses Leica-2.scn from the OpenSlide test data, free to use and distribute. See Sample Data and Credits.
Privacy
The slide is read in your browser. Opening one counts as one opened image of the kind "Leica SCN file". The file name and address are never recorded. See the privacy policy.
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