Free online ICNS-to-TIFF extract-first export
Direct ICNS upload is unsupported: this browser tool does not decode the icon container or choose an embedded icon. Use an ICNS-aware utility to export the icon representation you need as a browser-readable raster image, then create one local uncompressed 8-bit RGBA TIFF still from the pixels your browser decodes.
Files stay in this browser
All conversion runs on-device
About this converter
ICNS is a macOS icon container that can hold multiple icon representations, while this browser converter starts only with an image the browser can decode. It therefore does not directly convert an ICNS upload, select an icon entry, or extract artwork from an application bundle. First use an ICNS-aware utility to export the intended representation as a browser-readable raster image, such as PNG, JPG, or WebP, at the dimensions you need. Then inspect that extracted image before adding it here. Fileverses draws its browser-decoded pixels to one canvas and writes one little-endian TIFF image with four 8-bit samples per pixel (RGBA), one strip, and 72-DPI X/Y resolution tags. This is a single-image raster handoff, not a vector-recovery, color-managed, CMYK, profiled, multipage, or configurable-compression TIFF workflow. Decoded alpha can remain in the canvas pixels, but the tool does not crop an icon, remove an opaque background, or create transparency. The TIFF cannot restore detail, color information, or editable artwork absent from the extracted raster image. Keep the ICNS and the extraction utility’s export when you need to revisit the icon choice or dimensions. You can queue up to 50 supported raster files under 50 MB each; decoded images larger than 12 megapixels are rejected. Because the TIFF is uncompressed four-channel pixel data, its output size depends on the extracted dimensions and is never guaranteed to be smaller.
How it works
Use an ICNS-aware utility to export the icon representation you intend to use as PNG, JPG, WebP, or another browser-readable raster image. Choose and inspect its dimensions there; Fileverses does not decode ICNS or select an embedded icon entry.
Drop, paste, or choose the raster export on this page and keep TIFF selected. Confirm the visible icon, background, alpha appearance, and dimensions before conversion.
Generate a separate TIFF locally for each supported image, then check the raster appearance, dimensions, alpha handling, 72-DPI tags, file size, and TIFF support in the receiving application.
Made for real pipelines
Convert without uploading your assets. Switch outputs anytime — web, print, icons, and document targets from the same batch.
Convert an extracted icon image to TIFFStart with an ICNS-aware utility to export the intended browser-readable icon image. This page does not decode ICNS, choose an icon entry, or extract from an app bundle.
Create one little-endian, uncompressed 8-bit RGBA TIFF image in one strip with 72-DPI tags from the browser-decoded canvas pixels.
Convert eligible extracted images on your device, inspect each download in its destination software, and plan around the 50-file, 50-MB-per-file, and 12-megapixel limits.
Good to know
No. Direct ICNS upload is unsupported because this browser conversion path does not decode the ICNS container or select one of its embedded icon representations. Export the representation you need with an ICNS-aware utility first, then upload the browser-readable raster export to create a TIFF.
Use an ICNS-aware utility to export the intended icon representation as a browser-readable raster image, such as PNG, JPG, or WebP. Choose the representation and dimensions during that step, then inspect the export because Fileverses makes the TIFF from its decoded pixels.
For a supported raster input, Fileverses writes one little-endian, uncompressed TIFF image with four 8-bit samples per pixel (RGBA), one strip, and 72-DPI X/Y resolution tags. Each successful file is one single-image TIFF still.
No. The tool does not crop an icon or remove a background. Decoded alpha from the extracted raster image can remain in the RGBA pixels, but an opaque image is not made transparent. Check the extracted image before conversion.
No. This is a basic single-image RGBA raster export. It does not recover vectors or editable artwork, create CMYK data, embed ICC profiles, combine files into pages, or offer a compression choice. Keep the ICNS and original extracted image for workflows needing those source capabilities.
You can queue up to 50 supported raster files, each under 50 MB, and a decoded image larger than 12 megapixels is rejected. Conversion runs locally in your browser rather than sending the extracted image to a conversion server. TIFF output size depends on the extracted dimensions and uncompressed RGBA pixels, so it is not guaranteed to be smaller.