add list of supported file types to README

README.md

@@ -47,6 +47,73 @@ _The AppImage needs to be [made executable](http://discourse.appimage.org/t/how-
 - [Source Code](https://github.com/szTheory/exifcleaner)
 - [Issue Tracker](https://github.com/szTheory/exifcleaner/issues)
 
+## Supported File Types
+
+Below is a full list of supported file types that ExifCleaner will remove metadata for. It's based on which file types [ExifTool](https://exiftool.org/) supports write operations for.
+
+* **3G2, 3GP2** – 3rd Gen. Partnership Project 2 a/v (QuickTime-based)
+* **3GP, 3GPP** – 3rd Gen. Partnership Project a/v (QuickTime-based)
+* **AAX** – Audible Enhanced Audiobook (QuickTime-based)
+* **AI, AIT** – Adobe Illustrator [Template] (PS or PDF)
+* **ARQ** – Sony Alpha Pixel-Shift RAW (TIFF-based)
+* **ARW** – Sony Alpha RAW (TIFF-based)
+* **AVIF** – AV1 Image File Format (QuickTime-based)
+* **CR2** – Canon RAW 2 (TIFF-based) (CR2 spec)
+* **CR3** – Canon RAW 3 (QuickTime-based) (CR3 spec)
+* **CRM** – Canon RAW Movie (QuickTime-based)
+* **CRW, CIFF** – Canon RAW Camera Image File Format (CRW spec)
+* **CS1** – Sinar CaptureShop 1-shot RAW (PSD-based)
+* **DCP	DNG** – Camera Profile (DNG-like)
+* **DNG** – Digital Negative (TIFF-based)
+* **DR4** – Canon DPP version 4 Recipe
+* **DVB** – Digital Video Broadcasting (QuickTime-based)
+* **EPS, EPSF, PS** – [Encapsulated] PostScript Format
+* **ERF** – Epson RAW Format (TIFF-based)
+* **EXIF** – Exchangeable Image File Format metadata (TIFF-based)
+* **EXV** – Exiv2 metadata file (JPEG-based)
+* **F4A, F4B, F4P, F4V** – Adobe Flash Player 9+ Audio/Video (QuickTime-based)
+* **FFF** – Hasselblad Flexible File Format (TIFF-based)
+* **FLIF** – Free Lossless Image Format
+* **GIF** – Compuserve Graphics Interchange Format
+* **GPR** – GoPro RAW (DNG-based)
+* **HDP, WDP, JXR** – Windows HD Photo / Media Photo / JPEG XR (TIFF-based)
+* **HEIC, HEIF** – High Efficiency Image Format (QuickTime-based)
+* **ICC, ICM** – International Color Consortium color profile
+* **IIQ** – Phase One Intelligent Image Quality RAW (TIFF-based)
+* **IND, INDD, INDT** – Adobe InDesign Document/Template
+* **INSP** – Insta360 Picture (JPEG-based)
+* **JP2, JPF, JPM, JPX** – JPEG 2000 image [Compound/Extended]
+* **JPEG, JPG, JPE** – Joint Photographic Experts Group image
+* **LRV** – Low-Resolution Video (QuickTime-based)
+* **M4A, M4B, M4P, M4V** – MPEG-4 Audio/Video (QuickTime-based)
+* **MEF** – Mamiya (RAW) Electronic Format (TIFF-based)
+* **MIE** – Meta Information Encapsulation (MIE specification)
+* **MOS** – Creo Leaf Mosaic (TIFF-based)
+* **MOV, QT** – Apple QuickTime Movie
+* **MP4** – Motion Picture Experts Group version 4 (QuickTime-based)
+* **MPO** – Extended Multi-Picture format (JPEG with MPF extensions)
+* **MQV** – Sony Mobile QuickTime Video
+* **NEF** – Nikon (RAW) Electronic Format (TIFF-based)
+* **NRW** – Nikon RAW (2) (TIFF-based)
+* **ORF** – Olympus RAW Format (TIFF-based)
+* **PDF** – Adobe Portable Document Format
+* **PEF** – Pentax (RAW) Electronic Format (TIFF-based)
+* **PNG, JNG, MNG** – Portable/JPEG/Multiple-image Network Graphics
+* **PPM, PBM, PGM** – Portable Pixel/Bit/Gray Map
+* **PSD, PSB, PSDT** – PhotoShop Document / Large Document / Template
+* **QTIF, QTI, QIF** – QuickTime Image File
+* **RAF** – FujiFilm RAW Format
+* **RAW** – Panasonic RAW (TIFF-based)
+* **RW2** – Panasonic RAW 2 (TIFF-based)
+* **RWL** – Leica RAW (TIFF-based)
+* **SR2** – Sony RAW 2 (TIFF-based)
+* **SRW** – Samsung RAW format (TIFF-based)
+* **THM** – Thumbnail image (JPEG)
+* **TIFF, TIF** – Tagged Image File Format
+* **VRD** – Canon DPP Recipe Data
+* **X3F** – Sigma/Foveon RAW
+* **XMP** – Extensible Metadata Platform sidecar file
+
 ## Development
 
 Built with [Electron](https://electronjs.org). Uses [node-exiftool](https://www.npmjs.com/package/node-exiftool) as a wrapper for [Exiftool](https://exiftool.org/) binaries.