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Documentation

DooFiles

Media viewer

How to view images, videos, audio and PDF files in full screen with DooFiles: the buttons of the viewer, moving from one file to the next, zooming into images, the player for videos and audio and its options, the details of each file, and editing images.

Last updated: Oct 29, 2026

Overview

The media viewer shows images, videos, audio and PDF files in full screen, over the file manager, without downloading them. You can move from one file to the next in the same folder, zoom into images, play videos and audio with the DooFiles player, see the details stored in each file, and edit images.

[SCREENSHOT_HERE: The media viewer showing an image, with the position (4 | 5) at the top left, the arrow on one side, and the bar at the top with the sun, EDIT, INFO, the zoom buttons, Download and Close]

Which files open in the viewer

TypeFormats
ImagesPNG, JPG, GIF, WebP, AVIF, BMP, ICO and SVG
VideosMP4, M4V, WebM, OGV, MOV and MKV
AudioMP3, M4A, WAV, OGG, Opus and FLAC
DocumentsPDF

Text files open in the editor instead.

Open the viewer

  • Click the name of an image, a video, an audio file or a PDF file in the list.
  • Or right-click it and choose Preview.

The viewer screen

At the top left, a small bar shows the position of the file in the folder, such as 4 | 5: the file you are viewing and how many there are. The name, the dimensions and the size of the file are in the Details panel: click INFO.

The bar at the top right has the buttons. Some show only for some files:

ButtonShows forWhat it does
Zoom out, the zoom level and Zoom inImagesZoom into the image. See Zoom into an image
The sunImages and videosTurns the cinematic lighting on or off. See Cinematic lighting
AUTOVideosPlays each video as soon as it opens
LOOPVideosPlays the video again and again
EDITImages you can editOpens the image editor. See Edit images
INFOAllOpens the Details panel. See Details of a file
DownloadAllDownloads the file you are viewing
CloseAllCloses the viewer and goes back to the list

A button that is on, such as LOOP or INFO, shows a short line under its name.

You can also close the viewer by pressing Escape, or by clicking the dark background around the file.

Move between files

The viewer goes through the images, videos and PDF files of the folder you have open, in the order of the list. After the last file, it goes back to the first one.

  • Move the pointer toward the left or right side of the screen, and click the arrow that shows there. You can also press the Left and Right arrow keys.
  • The arrows hide after a few seconds without moving the pointer, so they do not cover the file. Move the pointer again to show them.
  • On a touch screen, swipe left or right.

Zoom into an image

The viewer fits each image to the screen first, without making small images bigger. To zoom in or out:

  • turn the mouse wheel over the part you want to see;
  • or click Zoom in and Zoom out at the top;
  • or press + and -;
  • or double-click the image.

Between the zoom buttons, the zoom level shows the size of the image compared to its real size: 100 % is one pixel of the image for each pixel of your screen. You can zoom up to eight times the size the image has when it fits the screen.

When the image is zoomed in, it uses the whole screen, also behind the bar at the top. Drag it to move around. Press 0 or Escape, or double-click it, to fit it to the screen again.

Videos

Videos play with the DooFiles video player, which looks the same in every browser. The player loads the first time you open a video, so that first video can take a moment longer. If the player cannot load, the viewer uses the controls of your browser.

[SCREENSHOT_HERE: A video playing in the media viewer, with the glow of the cinematic lighting around it and the controls bar at the bottom]

The controls of the player

Move the pointer over the video to show its controls. They hide while the video plays.

ControlWhat it does
Play and PauseStarts or stops the video. You can also click the video
VolumeTurns the sound off or on. Hold the pointer over it to change the volume
TimelineShows where you are and the length of the video. Click or drag it to jump to any point, without waiting for the whole file to download
SettingsChanges the playback speed
CastPlays the video on a TV or a speaker on your network, when your browser and your devices support it
Picture-in-pictureKeeps playing the video in a small window, so you can keep working
Full screenShows the video on the whole screen

Options of the viewer

OptionWhat it doesDefault
Cinematic lighting (the sun)A soft glow with the colors of the video around the player. It also works with imagesOn
AUTOEach video starts playing as soon as you open it or move to it (DooFiles 1.0.9 or newer)Off
LOOPWhen the video ends, it starts againOff

DooFiles remembers the volume, whether the sound is off, the playback speed, AUTO, LOOP and the cinematic lighting in your browser, for the next videos you open. To clear them, see Preferences.

Cinematic lighting

Cinematic lighting needs DooFiles 1.0.9 or newer.

Behind an image or a video, cinematic lighting spreads a soft glow with its colors around it. For a video, it follows the video and changes with each scene; when the video is paused, the glow keeps the colors of that moment. It hides while you zoom into an image or edit it.

Click the sun at the top to turn it off, and click it again to turn it on. When it is off, the sun is dimmer.

Keyboard shortcuts of the player

Click the video first, so the player listens to the keys:

KeysWhat they do
Space or KPlays or pauses
Left and Right arrows, or J and LGo back or forward 10 seconds
Up and Down arrowsTurn the volume up or down
MTurns the sound off or on
FFull screen
IPicture-in-picture
CSubtitles, when the video has them
< and >Slower or faster
0 to 9Jump to that part of the video: 5 is the middle
Home and EndJump to the start or the end

While the player has the keys, the Left and Right arrows move inside the video instead of going to the next file. Click outside the video to use them to move between files again.

Which videos play

Whether a video plays depends on your browser. MP4 and WebM files play in every current browser. MOV and MKV files play only when they use a format that your browser supports: most MKV files with H.264 or VP9 video play in Chrome and Edge, but not in Safari, and videos in HEVC often do not play at all. When your browser cannot play a video, the viewer says so and offers to download it, so you can open it on your computer.

Audio

Audio needs DooFiles 1.0.12 or newer.

MP3, M4A, WAV, OGG, Opus and FLAC files play with the same player as the videos, over the cover of the album, with the controls at the bottom of the cover. If the file has no cover, a music note shows instead. Below the cover, the viewer shows the title of the song, and the artist and album, from the tags saved in the file. Without tags, it shows the name of the file.

The options work as with videos: AUTO, LOOP, the volume and the speed are the same ones, and the cinematic lighting takes the colors of the cover.

MP3, M4A and WAV files play in every current browser. Whether the other formats play depends on your browser. When your browser cannot play a file, the viewer says so and offers to download it.

[SCREENSHOT_HERE: An MP3 playing in the media viewer: the cover of the album with the controls at its bottom, the title and the artist below, and the glow of the cinematic lighting]

Edit an image

Click EDIT at the top to rotate, flip, crop or resize the image you are viewing, change its format or quality, or remove its metadata. You can save the result as a copy or in place of the original. The editor uses the image editor of your server, the same one WordPress uses.

See the full guide: Edit images.

Details of a file

Click INFO at the top to open the Details panel, on the right side of the screen, with the information stored in the file. It stays open while you move to the next file, until you click INFO again or the close button of the panel.

[SCREENSHOT_HERE: The Details panel open next to a photo, with the File, Camera and Location groups]

GroupWhat it shows
FileThe name, the dimensions and the size. For videos, also the duration, the format, the video and audio codecs, the bitrate and when it was recorded. For audio, the duration, the format, the codec, the sample rate, the channels and the bitrate
MusicFor audio files: the title, artist, album, track, year and genre saved in the tags of the file
CameraFor photos: the camera and lens, when the photo was taken, the exposure, aperture, ISO, focal length, flash and the editing software
LocationFor photos taken with the location turned on: the GPS coordinates and the altitude
DescriptionThe title, caption, author, copyright and keywords saved in the photo

The camera, location and description come from the EXIF and IPTC data of JPEG and TIFF photos. Other images show only their dimensions. A row appears only when the file has that data.

The location of a photo can show where it was taken, such as a home. Anyone who can open the file in DooFiles can see it. To remove it from a photo, edit the image and turn on Remove metadata.

PDF files

PDF files open in the PDF viewer of your browser, inside DooFiles, with its own tools to move between pages and zoom.

If your browser cannot show PDF files inside a page, the viewer tells you: This browser cannot show PDF files inside the page. Click Open in a new tab to see it.

[SCREENSHOT_HERE: A PDF file open in the media viewer, with the PDF viewer of the browser showing its pages]

Keyboard shortcuts

KeysWhat they do
Left and Right arrowsShow the previous or the next file
+ and -Zoom in or out of an image
0Fits a zoomed image to the screen
EscapeFits a zoomed image to the screen, or closes the viewer

The player of the video and the image editor have their own shortcuts: see Keyboard shortcuts of the player and Edit images.

Troubleshooting

ProblemWhat to do
This file could not be shown here. You can download it.The file may be damaged, or your browser does not support its format. Download it to open it on your computer
A MOV or AVIF file does not showYour browser does not support the format or the codec of that file. Try another browser, or download the file
This browser can't play this video. You can download it.Your browser cannot play the format of that video, such as an MKV file in Safari or a video in HEVC. Try Chrome or Edge, or download the file
This browser can't play this audio file. You can download it.Your browser cannot play that format. Download the file to play it on your computer
An audio file shows a music note instead of its coverThe file has no cover in its tags, or the cover is not a JPEG, PNG, WebP or GIF image
The arrow keys do not change the fileThe video player has the keys. Click outside the video, then press the arrows
The video starts muted, or at another speedDooFiles remembers the volume and the speed of the last video in your browser. Change them in the player
I do not see the cinematic lightingCheck that the sun at the top is not dimmed. Very dark videos give a very soft glow
This browser cannot show PDF files inside the page.Click Open in a new tab, or download the file
EDIT does not appearThe image cannot be edited: see Edit images
Preview does not appear in the menuYour license is not active, or the file is not an image, a video, an audio file or a PDF. See License activation

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