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Supported Filetypes

This is a list of all filetypes Hydrus can import. Hydrus determines the filetype based on examining the file itself rather than the extension or MIME type.

The filetype for a file can be overridden with manage -> force filetype in the context menu for a file.

Images

Filetype Extension MIME type Thumbnails Viewable in Hydrus Notes
jpeg .jpeg image/jpeg
png .png image/png
static gif .gif image/gif
webp .webp image/webp Animated webp files will display as static
tiff .tiff image/tiff
qoi .qoi image/qoi Quite OK Image Format
icon .ico image/x-icon
bmp .bmp image/bmp
heif .heif image/heif
heic .heic image/heic
avif .avif image/avif

Animations

Filetype Extension MIME type Thumbnails Viewable in Hydrus Notes
animated gif .gif image/gif
apng .apng image/apng
heif sequence .heifs image/heif-sequence
heic sequence .heics image/heic-sequence
avif sequence .avifs image/avif-sequence
ugoira .zip application/zip Pixiv Ugoira format. A zip file containing images with 6 digit zero-padded filenames will be identified as a Ugoira file.

Video

Filetype Extension MIME type Thumbnails Viewable in Hydrus Notes
mp4 .mp4 video/mp4
webm .webm video/webm
matroska .mkv video/x-matroska
avi .avi video/x-msvideo
flv .flv video/x-flv
quicktime .mov video/quicktime
mpeg .mpeg video/mpeg
ogv .ogv video/ogg
realvideo .rm video/vnd.rn-realvideo
wmv .wmv video/x-ms-wmv

Audio

Filetype Extension MIME type Viewable in Hydrus Notes
mp3 .mp3 audio/mp3
ogg .ogg audio/ogg
flac .flac audio/flac
m4a .m4a audio/mp4
matroska audio .mkv audio/x-matroska
mp4 audio .mp4 audio/mp4
realaudio .ra audio/vnd.rn-realaudio
tta .tta audio/x-tta
wave .wav audio/x-wav
wavpack .wv audio/wavpack
wma .wma audio/x-ms-wma

Applications

Filetype Extension MIME type Thumbnails Viewable in Hydrus Notes
flash .swf application/x-shockwave-flash
pdf .pdf application/pdf 300 DPI assumed for resolution. No thumbnails for encrypted PDFs.
epub .epub application/epub+zip
djvu .djvu image/vnd.djvu
rtf .rtf application/rtf

Image Project Files

Filetype Extension MIME type Thumbnails Viewable in Hydrus Notes
psd .psd image/vnd.adobe.photoshop Adobe Photoshop. Hydrus shows the embedded preview image if present in the file.
clip .clip application/clip1 Clip Studio Paint
sai2 .sai2 application/sai21 PaintTool SAI2
krita .kra application/x-krita Krita. Hydrus shows the embedded preview image if present in the file.
svg .svg image/svg+xml
xcf .xcf application/x-xcf GIMP
procreate .procreate application/x-procreate1 Procreate app

Archives

Filetype Extension MIME type Thumbnails Notes
7z .7z application/x-7z-compressed
gzip .gz application/gzip
rar .rar application/vnd.rar
zip .zip application/zip
cbz .cbz application/vnd.comicbook+zip A zip file containing images with incrementing numbers in their filenames will be identified as a cbz file. The code for identifying a cbz file is in hydrus/core/HydrusArchiveHandling.py

  1. This filetype doesn't have an official or de facto media type, the one listed was made up for Hydrus.