The viewer on the web

Click a picture in the grid and it opens full screen. The top line shows the file name, the date it was taken and where it sits in the list, such as 12 of 340.

• The arrows at the sides, or the left and right arrow keys, go to the previous and next item. On a touch screen, swipe left or right.
• The × at the top left, or Escape, closes the viewer. On a touch screen, swipe down.
• Walking past the last loaded item loads the next ones.

• Pinch on a touchpad or a touch screen.
• Mouse wheel over the photo. Once zoomed, scrolling with two fingers on a touchpad moves the photo instead.
• Double click, or double tap, zooms in on that spot; again goes back.
• The zoom button at the top zooms in a step.
• Keys: + zooms in, - zooms out, 0 fits the photo again, and Escape while zoomed fits it too.
• Drag a zoomed photo to move around it.

The photo opens from a smaller copy and is swapped for the full one as soon as it arrives, so zooming shows the real detail. Zoom goes at least to four times, further for large originals. A format the browser cannot draw, such as HEIC, stays at its smaller copy here; Download still gives you the original.

While a photo is zoomed, a small copy of the whole photo appears in the top right corner, with a frame around the part on screen. Press or drag in it to jump to another part. Under it, a slider with − and + sets the zoom.

• A clip plays in the viewer, with the browser's own controls.
• A PDF is shown page under page, up to 200 pages. If it cannot be shown in the browser, a button downloads it.

• The i button at the top shows or hides the Details panel. On a wide screen it is open from the start; on a narrow one, swipe up to see it and down to hide it.
• The row of buttons under the photo is described in viewer actions.
• Without a backup backend there is no picture to show; the viewer says the item is on your phones, and the details are still there.