Add a decodable TIFF
Drop, paste, or choose a TIFF under 50 MB. Continue only if your browser can read that TIFF as an image.
Free Online TIFF to ICNS converter
Turn a decodable TIFF intoa six-size ICNS icon.
Fileverses is a free Online TIFF to ICNS converter that turns one browser-decodable TIFF image into a macOS ICNS file with six PNG-backed icon sizes.
- 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 TIFF to ICNS conversion, built for a real workflow.
TIFF can hold a detailed raster image, while ICNS is a macOS icon container. Fileverses first needs the browser to decode the TIFF as one image; it then contain-scales that rendered image into 16, 32, 64, 128, 256, and 512 pixel PNG entries inside one ICNS file. This is useful when you already have a suitable square-ish image for a macOS icon asset, not when you need to preserve TIFF pages, print metadata, or editable artwork.
- The route works only when the browser can decode the uploaded TIFF; an unsupported TIFF cannot enter the raster conversion path.
- One rendered TIFF image is used. The interface does not offer TIFF page selection or combine multiple TIFF pages into one icon.
- The ICNS encoder writes six PNG-backed entries: 16, 32, 64, 128, 256, and 512 pixels.
- Each entry is contain-scaled into a square canvas, so wide or tall artwork can receive transparent padding rather than an automatic crop.
- The conversion accepts up to 50 files under 50 MB each, but decoded images above 12 megapixels are rejected and output size is not guaranteed.
How it works
Upload once.
Export ICNS.
Keep ICNS selected
This route starts with ICNS selected. The converter renders one image, then creates six contain-scaled PNG icon entries.
Download and test it
Save the ICNS result and inspect it in the macOS workflow that needs it. It is an icon asset, not an app bundle.
Made for real pipelines
TIFF to ICNS.
One workspace.
Convert without uploading your assets. Switch outputs anytime — web, print, icons, and document targets from the same batch.
Convert TIFF to ICNSSix icon resolutions
Build one ICNS file with PNG-backed entries from 16 through 512 pixels.
Contain-scaled artwork
The converter preserves the rendered image's proportions inside square icon canvases rather than auto-cropping it.
Local browser workflow
Accepted files are decoded and packaged in the browser, with no account step.
Good to know
Questions, answered.
Is this TIFF to ICNS converter free to use?+−
Yes. Fileverses provides this TIFF to ICNS conversion free, without an account or sign-up.
Can every TIFF be converted to ICNS?+−
No. The browser must decode the TIFF as an image before conversion begins. If it cannot, export or rasterize the needed TIFF view to a browser-readable image first.
Which ICNS sizes does Fileverses create?+−
The ICNS file contains PNG-backed 16, 32, 64, 128, 256, and 512 pixel entries.
Can I choose a page from a multipage TIFF?+−
No. Fileverses has no TIFF page-selection control. It converts only the single image representation the browser provides.
Will Fileverses crop my TIFF into a square icon?+−
No. The icon encoder contain-scales the rendered image into square entries. Non-square artwork can have transparent padding instead of being cropped.
Does an ICNS download create a macOS app icon automatically?+−
No. The result is an ICNS icon file only. Add it to the relevant macOS project or packaging workflow yourself and validate it there.