Formats

This page lists which formats are supported and to what extent. An empty cell means “not supported”. A file with no extension, an unknown one or a wrong one (a PDF named scan.png, a video named clip.dat) is shown in the Preview pane by what's actually inside it. For other files not in the table, you see the system icon instead of a thumbnail, the Preview pane shows the name, size, and date, and content search reads them if they look like text.

Files	Thumbnail	Preview pane	Full screen, ratings, helpers	Content search	Conversion
Images `.jpg` `.jpeg` `.jpe` `.jfif` `.png` `.gif` `.bmp` `.ico` `.tif` `.tiff` `.webp` `.tga` `.jxr` `.wdp`	image	image, loupe; animated GIF and WebP with a player	yes		to JPEG, to PNG, shrink to 1920: Wander itself; to WebP: ffmpeg
Photoshop `.psd` `.psb`	image	the composite image, without layers; loupe	yes
RAW `.cr2` `.cr3` `.crw` `.nef` `.nrw` `.arw` `.srf` `.sr2` `.raf` `.orf` `.ori` `.rw2` `.rwl` `.pef` `.3fr` `.fff` `.iiq` `.dng`	embedded preview	preview instantly; RAW button: decoding of the sensor data	yes		JPEG preview from the file: Wander itself; after that, as images
HEIC / HEIF `.heic` `.heif` `.hif`	image¹	image¹	yes¹		as images
AVIF, JPEG XL `.avif` `.jxl`	image²	image²	yes²		as images
SVG `.svg`	icon	image; `</>`: markup		as code
Video `.mp4` `.m4v` `.mov` `.wmv` `.avi` `.mkv` `.webm` `.ogv` `.mpg` `.mpeg` `.asf` `.3gp` `.3g2`	frame	player, tracks and codecs; what the built-in player can't open plays in the system player			to MP4 (H.264), compress, audio to M4A or MP3, frame to PNG: ffmpeg
Music `.mp3` `.flac` `.m4a` `.m4b` `.aac` `.wav` `.wma` `.ogg` `.opus` `.aif` `.aiff` `.aifc` `.au` `.mka` `.mp2` `.mpa`	cover art	cover art, tags, codec and quality, player			to MP3, M4A, FLAC, WAV: ffmpeg
3D `.stl` `.obj` `.gltf` `.glb` `.ply` `.3mf` `.fbx`	model; for 3MF, the slicer's picture of the plate	model: rotate, zoom
Fonts `.ttf` `.otf` `.ttc`	“Abc” and “Абв” in the font itself	sample text, the font's characters, name, version, author
Spreadsheets `.csv` `.tsv` `.xlsx` `.xlsm` `.ods`	icon; for XLSX, XLSM, ODS, the picture from the file, if the program saved one	grid: sheets, columns, rows; CSV and TSV also as text		yes, except `.xlsm`	XLSX and ODS to PDF: LibreOffice
Text `.txt` `.log` `.ini` `.cfg` `.conf` `.toml` `.env` `.mtl` `.gitignore` `.gitattributes` `.gitmodules` `.editorconfig` `.dockerignore` `.npmrc`	icon	text, encoding detected automatically		yes
Subtitles, playlists, contacts `.srt` `.vtt` `.ass` `.ssa` `.m3u` `.m3u8` `.pls` `.cue` `.nfo` `.vcf` `.ics` `.reg`	icon	text		yes
Code: languages, markup, configs, shaders, Unity and Godot assets³	icon	syntax highlighting		yes
Markdown `.md` `.markdown`	icon	rendered document		yes	to DOCX: pandoc
PDF `.pdf`	first page	document		via Windows, if a PDF reader is installed
HTML, MHT `.html` `.htm` `.mht` `.mhtml`	icon	page, without network access		as text
Office documents `.doc` `.dot` `.docx` `.pptx` `.odt` `.odp`	icon; for DOCX, PPTX, ODT, ODP, the picture from the file, if the program saved one	text only		yes; `.doc` and `.dot` via Windows	to PDF, except `.dot`: LibreOffice; DOCX to Markdown: pandoc
Files with a picture inside `.docm` `.pptm` `.odg` `.kra` `.ora` `.cbz`	the picture the program saved in the file; for CBZ comics, the first page
Older Excel and PowerPoint `.xls` `.ppt`	icon				to PDF: LibreOffice
RTF `.rtf`	icon	with fonts, tables, images		via Windows	to PDF: LibreOffice
Books `.fb2` `.epub`	cover	FB2: cover, description, text; EPUB: text only		EPUB: yes; FB2: as text
Archives `.zip` `.7z` `.rar` `.tar` `.gz` `.tgz` `.bz2` `.xz` and anything Windows opens as a folder, such as CAB	icon; images inside get thumbnails	contents; a file inside works like any other		doesn't look inside	extract
Programs `.exe` `.dll` `.sys` `.msi` `.ocx` `.scr` `.cpl` `.drv`	its own icon	info card: version, publisher, signature
Shortcuts `.lnk`	target's thumbnail with an arrow	target's contents
Companions `.xmp` `.pp3` `.meta`	one item with the main file	rating and label; GUID
Folder	preview of contents	breakdown: files, folders, size, top types
Drive	icon	volume label, file system, usage

The programs that conversion needs are covered on the “Conversion” page, and ratings and helpers in the “Culling photos” section.

Requires Windows extensions from the Microsoft Store; which ones are listed on the “Preview by type” page, in the “HEIC / HEIF” row.↩↩↩
Requires Windows extensions from the Microsoft Store: HEIF and AV1 for AVIF, JPEG XL for JPEG XL. Without them, you see an icon instead of a thumbnail, and the pane names the missing extension, with a button that opens its page in the Store.↩↩↩
.cs .csproj .props .targets .sln .slnx .vb .fs .js .ts .jsx .tsx .mjs .cjs .vue .svelte .py .ipynb .rb .go .rs .java .kt .scala .gradle .swift .dart .php .pl .lua .r .c .cpp .cc .cxx .h .hpp .m .mm .cmake .css .scss .less .sh .bash .zsh .ps1 .bat .cmd .sql .graphql .proto .tf .xml .xaml .json .jsonc .yaml .yml .diff .patch; shaders .shader .cginc .hlsl .compute .glsl .vert .frag .wgsl; Unity: .uxml .uss .asmdef, and assets .asset .prefab .unity .mat as text, if the project serializes them to YAML; Godot: .gd .tscn .tres.↩