TIF cannot display in Zoom.it!

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  • Updated 6 years ago
hi! i created TIF. on photoshop i upload the file to dropbox, then navigate to the download page, right click the download button, and then copy the link address.

I paste the link address into the create a zoom.it box and it doesn't work.
The file is 1,83 GB

Does anyone have experience with showing TIF files with zoom.it or know what is wrong?

Your help would be greatly appreciated.
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Félix Hortal

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Posted 6 years ago

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Bill Crow, Seadragon Group Manager

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There are many flavors of TIFF files. We do our best with zoom.it, but it can't understand them all. In general, if you can open it using the built-in photo viewer in Windows, then zoom.it should be able to open it too. zoom.it uses the same codecs as Windows.

That said, if it's a really big file (sounds like it is) it may be hitting some other limits on zoom.it. Unfortunately, there's no absolute rules on what works and what doesn't. It depends on the image content. You can see our FAQ for some more information. http://zoom.it/pages/faq/

You certainly want to make your TIFF file as simple as possible. It should be 8-bit per channel (24-bit per pixel) RGB with no alpha channel and no layers. This makes sure the file is packed with additional data that zoom.it doesn't need (but still needs to parse.) You also mentioned that it's on DropBox. It needs to be publicly available so the zoom.it service can access it.

If you can give me more details on the image (specifically its dimensions, pixel depth, color format, compression), or just send me the link to the image and I can take a look and see if I can figure out why its not able to open in zoom.it.
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Félix Hortal

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Thanks for the quick response, the file was created have these properties



I leave here the link of the image on dropbox:

https://www.dropbox.com/sh/puzi4mwmbo...

Thanks for your help again.
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George Birbilis

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your link isn't to the file itself, it is to the dropbox download page!

try
https://dl.dropboxusercontent.com/sh/...

got this URL by pressing the dropdown icon at the dropbox blue button at the download page url you sent and THEN right clicked the "Direct download" (or called something like that) menu item there and selected "Copy url" (Copy link target)

that also added ?dl=1... at the end of the URL (after the .tif) which I removed, since this is a public URL and don't need token_hash etc. for an authenticated session
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George Birbilis

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btw, zoom.it could be more clever with such dropbox (and other) URLs since many people seem to get it wrong

had the same problem with ClipFlair Studio (http://clipflair.net) and people pasting wrong dropbox URLs at the media url property (at the back) of our media player component

some useful code I wrote is at http://clipflair.codeplex.com (see at sources the Client\MediaPlayer\MediaPlayer.Silverlight\MediaPlayer.cs):

NOTE THAT THE TRICK THE CODE DOES (APART FROM CHANGING HTTPS TO HTTP [CAUSE CLIPFLAIR STUDIO IS SILVERLIGHT AND RUNNING FROM NON-HTTPS PAGE SO IT CAN'T USE HTTPS TO ACCESS CONTENT FROM OTHER SITES DUE TO SILVERLIGHT SECURITY RESTRICTION]) IS TO CHANGE WWW.DROPBOX.COM TO DL.DROPBOX.COM. TRY IT WITH YOUR URL ABOVE, CHANGE WWW TO DL AND IT WILL WORK (BE A DIRECT DOWNLOAD THAT IS). AS I ALSO NOTE, YOU CAN CHANGE HTTPS TO HTTP AND STILL WORKS (MAYBE A BIT FASTER TOO SINCE IT IS UNENCRYPTED TRANSFER)

///
/// When people share videos via Dropbox, they can get different URLs depending on whether
/// they share from their public foler or not and whether they use the OS file context menu's
/// Dropbox/Share link option or use the dropbox website to create a link to the file.
/// Need to remove https and use to dl.dropbox.com server to point to the download file.
///
/// the url
/// the fixed url (note: also changing HTTPS to HTTP)
private string FixURL_Dropbox(string url)
{
return url.ReplacePrefix(
new String[] { "https://dl.dropbox.com/s/", "https://www.dropbox.com/s/", "http://www.dropbox.com/s/" },
"http://dl.dropbox.com/s/", StringComparison.OrdinalIgnoreCase);
}
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Bill Crow, Seadragon Group Manager

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Felix, I was able to successfully convert your clip. As George points out, you need to use the correct URL for the TIFF file. The zoom.it version of your image is here: http://zoom.it/wKXr

George, yes you're right we can be smart about URL's we did write zoom.it to be smart about many URL's including Flickr (where we automatically find the highest resolution image) and SkyDrive, among others. But, the team that built this Live Labs experiment has long-since moved onto other projects, so there hasn't been any ongoing work on zoom.it for at least three years. We haven't been keeping up with other services that we could parse a little more intelligently. With zoom.it, what you see is what you get. I'm not expecting that there will be any additional development work.
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Félix Hortal

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Bill and George, I'm very impressed by both your work and your manner.
I hope I will be able to contact you again,you guys are the greatest!