NDL Digital Collections

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Thumbnail List
Move to Frame
Zoom Out
Zoom In
Fit to Window
Image Quality Adjustment
Other Functions



Simple view

Detailed view


FunctionMouse operationsKeyboard operations
Go to the next frameClick on the right edge of the content display
Go to the previous frameClick on the left edge of the content display.
Go to the first frameClick Other Functions button, then First button.Home
Go to the last frameClick Other Functions button, then Last button.End
Move to a specific frameChoose a frame number from the [Frame Number] List
Zoom inMove the mouse wheel up
Zoom in button
Zoom outMove the mouse wheel down
Zoom out button
Move the imageClick and drag the image.
Full Screen ViewFull Screen ON buttonF
Full Screen View OFF[Full Screen OFF] buttonF
Fit image to windowFit buttonG
Fit image to the widthHorizontal Fit buttonH
Rotate counterclockwise by 90°Rotate-counter-clockwise buttonJ
Rotate clockwise by 90°Rotate-clockwise buttonK
Show the thumbnailsThumbnail List buttonT
Show a composite image synthesized from multiple images.Whole Picture button
*This function is only available for certain materials included in the Rare Books and Old Materials Collection.
Adjust image qualityImage Quality Adjustment Dialog button
*This function modifies the image displayed in the content viewer only. To modify the printed image, you must make changes in the Print Modification window.
Display metadata, TOC, bibliography, or reproduction data.Display Metadata, TOC/Volume, etc. button
Close metadata, TOC, bibliography, or reproduction data.Display Metadata, TOC/Volume, etc. button
Print/SavePrint button*P
Obtain images in JPEG formatClick  JPEG View button and select a magnification.
Download all images.Download All Frames button
*You can use this function only when the metadata field “Access Restrictions” of the material shows “インターネット公開(保護期間満了)” that means “Available Online (Protection Period Expired)”
Display the URL of the current image.Click Other Functions button, then click [URL] button*U
PlayPlay ButtonP
PausePause ButtonP
StopStop ButtonS
Resize the viewer size to 4:34:3 ButtonW
Resize the viewer size to 16:916:9 ButtonW
Jump to a specific pointSeek Bar
*If you use a browser or player that supports HLS (HTTP Live Streaming), you can drag the Seek Bar.
MuteMute ButtonM
Unmute sound.Mute button (with mute)M
Adjust the volumeVolume Slider↑↓
Change the playback speedChange the playback speedU:+25%

*The Access Key is indicated by "*".
To use access keys on Windows IE, press "ALT"+ {Access Key}, on Windows FireFox, press "ALT" + "SHIFT"+ {Access Key}.