Opening a Paint.NET .pdn file with its layers

Paint by Zaweba opens Paint.NET's .pdn files and keeps them layered. Each layer arrives with its name, its visibility, its opacity and, in most cases, its blend mode, so you can carry on editing in a different program instead of working from a flattened copy. It's free, it runs offline on Windows, and it needs no account.

The .pdn format belongs to Paint.NET, and most other programs can't read it. That's fine while you only use one editor, but it becomes a problem when you want a tool Paint.NET lacks, or need to send a layered file to someone who works elsewhere.

Why the layers matter

A flattened export is a photograph of your work. It looks the same, but every decision is baked in. With the layers intact you can still move the text, change the background, turn down a shadow or swap one photo for another. Opening the .pdn itself, rather than a PNG made from it, keeps all of that possible.

Step by step

Open Paint by Zaweba and choose the .pdn file from the File menu, or drop it onto the window. Then open the Layers panel. You should see the same layers in the same order, with the names you gave them in Paint.NET. Hidden layers stay hidden, and each layer keeps its opacity.

Next, look at the blend modes. Paint has a long list of modes and maps Paint.NET's onto them, and most come across directly. The word most is there for a reason: if a layer looks a little different, click it and check its mode in the Layers panel, and try a neighbouring mode if needed. Paint previews a mode on the canvas while you hover over it in the list, which makes that comparison quick.

Then save. If you want to keep working in Paint, save and carry on. If the file is going to someone using Photoshop or a similar editor, save a layered PSD, which Paint writes with layers, groups, masks, blend modes, opacity and visibility.

What you can do once it is open

Once the layers are in Paint you have its whole toolset. You can add masks to layers that never had them, so you hide parts without erasing. You can add adjustment layers that change colour or tone without touching the pixels below, and live layer effects such as glows, strokes and shadows that follow every edit. You can also turn a selection into a mask and keep painting on it, which is a gentle way to refine a cut-out made in another program.

Getting a clean result

Work on a copy of the .pdn so the original stays as it was. Check any wording in particular, because Paint.NET commits text to pixels, so it will open as a picture of the text rather than something you can retype. If a phrase needs to change, add a new text layer in Paint and hide the old one.

Tidy as you go. Rename vague layers, group the parts that belong together and delete anything that was only ever a test. The next time the file is opened, by you or anyone else, it will make sense straight away.

When you only need a picture

If you just need a flat image for a website or an email, open the .pdn and export a JPEG or PNG. You still get the benefit of the layered file, because you can hide a layer or change one detail before exporting, without going back to Paint.NET at all.

Paint by Zaweba makes a sensible second home for .pdn files, and it costs nothing to try.