Convert Nikon NEF to TIFF on Mac.

Local file processing, by renaming the file in Finder. No converter window and no upload queue.

Finder rename

report.nefreport.tiff

How the rename works

  1. 1

    Start with report.nef

    Put the Nikon NEF file in a folder RenameTo watches, such as Desktop or Downloads.

  2. 2

    Rename it to report.tiff

    In Finder, change .nef to .tiff, then press Return. The rename is the command.

  3. 3

    Find the TIFF beside it

    RenameTo produces the requested output and keeps a restorable backup of the original.

What happens under the hood

RenameTo reads the Nikon NEF with the appropriate local macOS media or document framework, then writes a new TIFF beside it. The file itself is not sent to a conversion server.

About the formats

Nikon NEF is Nikon's RAW format. TIFF is a lossless format common in print and archival workflows.

Questions, answered

Does my file get uploaded anywhere?

No. File processing happens on your Mac. RenameTo does use the network for license validation, trial activation, and update checks, but your source files are not part of those requests.

What happens to the original Nikon NEF file?

RenameTo keeps a backup before processing. Undo restores the original alongside a format-changing output and does not delete that output. If the original name is already occupied, the restored copy gets “(restored)” in its name.

Can I convert a whole folder?

Yes. Rename multiple selected files in Finder and RenameTo queues each supported conversion, with a separate result and backup for every file.

Can I run the same conversion from a script?

Yes. The CLI command is: renameto tiff *.nef

Related conversions

Convert Nikon NEF to AVIF

report.nef → report.avif

Convert Nikon NEF to BMP

report.nef → report.bmp

Convert Nikon NEF to GIF

report.nef → report.gif

Convert Nikon NEF to HEIC

report.nef → report.heic

Convert Sony ARW to TIFF

report.arw → report.tiff

Convert AVIF to TIFF

report.avif → report.tiff

Convert BMP to TIFF

report.bmp → report.tiff

Convert Canon CR2 to TIFF

report.cr2 → report.tiff

Looking for another format? Browse every conversion.