.ACORN File Extension

Acorn Image

Developer Flying Meat
2.5  |  6 Votes

What is an ACORN file?

An ACORN file is a raster image created by Flying Meat Acorn, an image editor for macOS. It contains an image, as well as a record of any additions and edits made to that image. ACORN files are similar to .PSD files and other layer-based images.

More Information

Screenshot of a .acorn file in Flying Meat Acorn
ACORN file open in Flying Meat Acorn

Acorn is a macOS-only image editor that allows you to add text, shapes, and effects to images, as well as make other adjustments. Like Adobe Photoshop, Acorn allows you to add elements and make adjustments using layers, which keep some image elements separate from others. This allows you to edit the element(s) stored in one layer without affecting others. (For example, you can add, move, and edit a text layer without affecting your background image.)

Primarily, images created in Acorn are saved as ACORN files. The ACORN format preserves an image's layers, so you can continue editing them in the future. Acorn allows you to save images in other formats, but many of these formats "flatten" the image into a single layer, making additional editing more difficult.

How to open an ACORN file

You can open an ACORN file in Flying Meat Acorn (macOS). To do so, open Acorn and select File → Open.... Then, navigate to and open your ACORN file.

How to convert an ACORN file

You can use Flying Meat Acorn to convert ACORN files to other image formats, by selecting File → Export → Export (Web & Other).... The formats you can convert to include:

  • .PNG - Portable Network Graphic
  • .JPEG - JPEG Image
  • .GIF - Graphical Interchange Format
  • .HEIC - High Efficiency Image Format
  • .TIFF - Tagged Image File Format
  • .WEBP - WebP Image
  • .BMP - Bitmap Image
  • .PSD - Adobe Photoshop Document
  • .PDF - Portable Document Format
  • .SVG - Scalable Vector Graphics

Keep in mind that converting to many of these formats will "flatten" the image your ACORN file contains.

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Programs that open ACORN files


Verified by FileInfo.com

The FileInfo.com team has independently researched the Acorn Image file format and Mac apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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