When PSD Converter turns PSD into PNG
Get a PNG preview out of a PSD when you do not have Photoshop open.
What PSD Converter changes in the picture
Simple PSD files can be flattened to PNG in the browser. Layered effects and type may not match Photoshop.
If the file is rejected, export PNG from Photoshop. The browser is not a PSD editor.
Why PSD Converter is its own job
PSD Converter sits on this site because PSD and PNG are not interchangeable, even when they look similar in a file list. Get a PNG preview out of a PSD when you do not have Photoshop open. People try to convert PSD when they do not have Photoshop on this computer. Use PNG when a logo must stay crisp or when the background must stay transparent.
Simple PSD files can be flattened to PNG in the browser. Layered effects and type may not match Photoshop.
The PSD file you already have
PSD is Photoshop. A browser cannot edit the layers. Layers, masks, and smart objects are not editable here. Export PNG from Photoshop when you need the real file.
Keep the PSD on a machine with Photoshop.
What a PNG result is for
The download has to be PNG, because that is the format the next step named. Use PNG when a logo must stay crisp or when the background must stay transparent. Text in a screenshot stays sharper than it does in a heavy JPG.
PNG does not rescue a photo that was already compressed as JPG.
How to tell that PSD Converter worked
PSD Converter is worth using only when PNG is what the next step actually named. Get a PNG preview out of a PSD when you do not have Photoshop open. What you get from PSD Converter: Simple PSD files can be flattened to PNG in the browser. Layered effects and type may not match Photoshop. Before you trust it: If the file is rejected, export PNG from Photoshop. The browser is not a PSD editor. The file stays in your browser and is not uploaded. The limit is 100 MB. Keep the original until the download has been opened in the program that will use it. A second pass rarely helps. If the first PNG file is rejected, read the error from the program that rejected it. Another conversion of a bad result usually makes the file worse, not more compatible. When you are done, you should still have the PSD original and one PNG download that you have opened. If those two are the same kind of failure, this was the wrong tool and the page above is the place that says so. Photos fail uploads for three separate reasons: the format name, the pixel size, and the kilobyte size. PSD Converter only does the PSD to PNG step. If the form also prints a pixel size or a 20 KB or 50 KB cap, do that step with the matching tool, starting from the original each time. A second lossy save will not recover detail.
Here is the decision for PSD Converter. You start with PSD and you stop when a real program accepts PNG. A flattened preview can sometimes be saved as PNG so you can see the composite. Photographs are usually much larger as PNG than as JPG, with little visual gain. If those two sentences describe a tradeoff you do not want, do not convert. Renaming the extension by hand will not do this job. Running the tool twice on its own output will not do it either.
If the file is rejected, export PNG from Photoshop. The browser is not a PSD editor.
A related step, if you still need one, is PNG to JPG.
Other jobs start from the homepage, where each tool is named for the conversion it actually does.