Add a JPG
Upload, drop, or paste a browser-readable JPG at 12 megapixels or below.
Free JPG to ICNS converter
Package JPG as amacOS ICNS icon online.
This Free Online JPG to ICNS converter packages the browser-rendered JPG into six centered PNG icon entries. It makes an ICNS container, not a macOS app bundle, and it cannot add transparency to an opaque JPG.
- Private by design
- Default ICNS
- Paste supported
Files stay in this browser
All conversion runs on-device
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About this converter
Free JPG to ICNS conversion, built for a real workflow.
JPG is an opaque, lossy raster image. This route renders that JPG in the browser, contain-scales it without cropping, and packages PNG entries at 16, 32, 64, 128, 256, and 512 pixels in one ICNS file. Use it when you need an icon container to test with a macOS workflow, then validate the downloaded file in the destination application.
- The ICNS file contains six PNG-backed entries: 16, 32, 64, 128, 256, and 512 pixels.
- Each entry uses contain scaling and transparent padding; the converter does not crop the JPG to a square.
- A JPG source is opaque, so this route cannot create a transparent icon background.
- The output is an ICNS icon container only; it does not create an app bundle or configure an application icon.
- The browser rejects images above 12 megapixels, and output size depends on the rendered image and six embedded PNGs.
How it works
Upload once.
Export ICNS.
Choose ICNS
Keep ICNS selected to create a container with six centered PNG icon representations.
Download and validate
Save the ICNS file and test it in the macOS tool or packaging workflow where you intend to use it.
Made for real pipelines
JPG to ICNS.
One workspace.
Convert without uploading your assets. Switch outputs anytime — web, print, icons, and document targets from the same batch.
Convert JPG to ICNSSix embedded icon sizes
Packages centered PNG entries at 16 through 512 pixels in one ICNS container.
No automatic crop
Contain scaling preserves the JPG's aspect ratio instead of trimming it to fill a square.
Browser-side packaging
The rendered JPG and ICNS package are created in your browser without a sign-up or conversion-server upload.
Good to know
Questions, answered.
Is the JPG to ICNS converter free?+−
Yes. This JPG to ICNS conversion is free, online, and does not require an account or sign-up.
Is my JPG uploaded to a server?+−
No. The supported JPG is rendered and packaged in your browser; it is not sent to a conversion server.
Which icon sizes are inside the ICNS file?+−
The encoder includes PNG entries at 16, 32, 64, 128, 256, and 512 pixels.
Will the converter crop my JPG into a square?+−
No. It preserves the rendered aspect ratio with contain scaling and centers the result on each square icon canvas.
Can JPG to ICNS add transparency?+−
No. JPG images are opaque. The icon canvases can have transparent padding, but the conversion cannot remove the JPG background or create transparent pixels within it.
Does the ICNS download make a macOS app icon automatically?+−
No. It creates an ICNS file only. Assigning it to an app or bundle remains a separate macOS development or packaging step.