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EthanWalker
EthanWalker

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How I Built a Free PSD to PNG Converter That Runs Entirely in the Browser

#webdev #javascript #opensource #showdev

If you've ever tried to open a .psd file without Photoshop, you know the pain.

Adobe wants $54/month just for the privilege. GIMP works but it's complex and slow. Most online converters make you upload your design files to their servers — which is a huge privacy risk for client work.

So I built PSDtoPNG.com — a free, open-source PSD to PNG converter that runs 100% in the browser. No server uploads. No account. No software. Just drag, drop, done.

How it works

The converter is powered by psd.js — an open-source JavaScript library that can parse Adobe Photoshop files directly in the browser.

Here's the core flow:

// Parse PSD file in the browser
const psd = await PSD.fromDroppedFile(file);
await psd.parse();

// Get the full merged image
const canvas = psd.image.toCanvas();

// Or extract individual layers
psd.tree().children().forEach(layer => {
  const layerCanvas = layer.export();
  // Download each layer as PNG
});
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Because everything runs client-side using the Web File API and Canvas API, your files never leave your device. Not a single byte is uploaded anywhere.

What it can do

  • Convert PSD to PNG — lossless, pixel-perfect output
  • Extract individual layers — export each layer as a separate PNG file
  • Preserve transparency — full alpha channel support for logos and icons
  • Batch convert — drag and drop multiple PSD files at once
  • Cross-platform — works on Mac, Windows, Linux, Chrome OS
  • No size limits — handles large PSD files without breaking a sweat

The privacy angle

Most "free" converters are actually uploading your files to AWS S3 or similar and running server-side conversion. That means your unreleased designs, client assets, and branding files are sitting on someone else's server.

PSDtoPNG.com uses a fundamentally different approach — all parsing and rendering happens in your browser tab, using the same engine that renders images on your screen. Nothing ever leaves your machine.

Chrome Extension

I also published it as a Chrome extension (rated ⭐ 4.8/5) for users who want quick one-off conversions from the toolbar without opening a new tab.

PSD vs PNG — quick reference

PSD PNG
Editable layers Yes No (flat)
Browser compatible No Yes
Requires Photoshop Yes No
Transparent background Yes Yes
File size Large Smaller
Web use No Yes

Who is this for?

  • Developers receiving PSD mockups from designers who need to extract UI assets fast
  • Designers without an active Adobe subscription
  • Students who can't afford $54/month
  • Marketing teams who get design files from agencies

Try it

psdtopng.com — completely free, no sign-up required.

Would love feedback from the DEV community — especially if you've run into edge cases with complex PSDs, layer blending modes, or smart objects. Drop a comment below!

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