PSD to PNG Converter

A PSD holds Photoshop layers, masks and effects, and next to them a flattened "merged image" that Photoshop saves so other programs can show the file. PNG is the right format for that image when you need transparency — logos, cut-outs, interface elements — or a lossless copy. This converter reads the merged image straight from the PSD or PSB file and writes a PNG with the transparent areas intact. The file never leaves your device.

How to use this tool

1. Drop one or more .psd or .psb files into the box.
2. Keep "Keep transparent" to preserve see-through areas, or fill them with a colour.
3. Optionally set a max width for a smaller image.
4. Download the PNGs, or all of them as a ZIP.

Formula

PSD sections: header (8BPS, version, channels, size, bit depth, colour mode) → colour-mode data → image resources → layers and masks → merged image data. The last section is read (raw or PackBits rows, one channel after another) and turned into RGBA.

A negative layer count in the file means the first extra channel is the merged transparency, so only then is it used as alpha; other extra channels are saved selections and are ignored. Photoshop stores partly transparent merged colours blended with white; each pixel is un-blended with c = (m − 255 + a) × 255 ÷ a, so semi-transparent edges keep their real colour. 16-bit documents are rounded to 8 bits.

Example

A 2000 × 2000 px logo document on a transparent background (no Background layer) gives a 2000 × 2000 px PNG whose empty areas are transparent: a pixel with alpha 128 stored as merged value 191 becomes (191 − 255 + 128) × 255 ÷ 128 ≈ 128, its original colour, at half opacity.

When a file cannot be converted

The merged image is only written when "Maximize PSD and PSB File Compatibility" was on (Photoshop asks by default). Files saved without it contain layers only; the page tells you to re-save with that option on (Preferences › File Handling). Lab and 32-bit documents must first be changed to RGB at 8 or 16 bits per channel.