Questions tagged [thumbnails]

Thumbnails are reduced-size versions of pictures/videos/PDF's, Used to help in recognizing and organizing them.

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22.04 No Thumbnails for brower upload dialogue boxes

When using Chrome/Brave/Chromium the file browser dialogue box does not show thumbnails for the files. I used to be able to click the file and an image would appear. I cannot seem to correct this. ...
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problems about images after upgrade to UBUNTU 22.04 LTS (jammy)

After upgrading Ubuntu to 22.04 I experienced the following problems: -No more thumbnails except old ones -Nautilus doesn't show the "image properties" tap in the properties window -Image ...
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Thumbnails of images larger then 4096px are not displayed in file selection dialog

In file selection dialog (for instance, in Firefox when trying to upload an image), thumbnail of images larger than 4096px are not displayed (on the right of the windows). I would like to known if a ...
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3 votes
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495 views

No file preview while opening an image in 22.04

In 21.10, when I try open a file, I could see a thumbnail preview on the right. This was true with Firefox, GIMP and Inkscape. Sadly, after upgrading to 22.04, all I got are file names and an image ...
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PCManFM does not create thumbnails for png and jpg but does create for videos

I am using PCManFM and I have recently noticed that each time I go to a folder with pictures all thumbnails are generated "on the fly" (not loaded from the thumbnail cache folder). I checked ...
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Thumbnails do not appear in ramfs I set as they did before Kubuntu 21.10

I am using Kubuntu 21.10, fully updated with 16GB of ram. I have dolphin file manager set to generate thumbnails for all photos/videos. I have many stored on external encrypted drives, so I wanted to ...
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2 votes
1 answer
234 views

How to increase the maximal thumbnail size in Ubuntu 20+ nautilus file manager?

The maximum available thumbnail size (~165px) in Ubuntu 20.04 is too small for my liking and I would like to increase it above this limit: I have tried nautilus, nemo and thunar and in all of them ...
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Gnome's Files application in Ubuntu 20.04 does not properly show the thumbnail of raster image files at times

I noticed that the Files application in Ubuntu 20.04 does not properly show the thumbnail of raster image files at times. Instead of showing the thumbnail of the image, either a white icon with a ...
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Can anybody help me do a deep dive into how Dolphin under KDE generates text file thumbnails?

Ubuntu 20.04 LTS, with KDE installed on top. Problem: When using a dark theme, text file thumbnails in dolphin use a light color for the text, but do not change the background, leading to white-on-...
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How to reset thumbnail cache in XFCE? [duplicate]

I had a lot of plots (in pdf format) in a directory. Recently, I had regenerated all the plots (retaining their previous names). Now, Thunar shows distorted thumbnails for many of these regenerated ...
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2 votes
1 answer
553 views

Thumbnail view in 'Files' can't see .webp images

In the ubuntu files browser 'Files' I can set the default viewer for a given filetype (right-click->properties->open with) - but is there a way to get Files itself to show thumbnails for .webp ...
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How to get Krita thumbnails working in Nautilus

I'm trying out Ubuntu 20.04 using VirtualBox and I can't see thumbnails for Krita files comparison of a Krita file on Windows and on Ubuntu to showcase the issue
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18.04 LTS vs 20.04.3 LTS: Stretchable Desktop Icons (Photos on the Desktop)

I lasted a year to upgrade ubuntu from 18.04 LTS to 20.04.3 LTS, this because upgrading there was a loss of functionality. In fact, before I had photos on the desktop made with the thumbnails or icons ...
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130 views

Getting thumbnails of cbz comics with images formatted in webp

So, I have a bunch of digital comics that are in cbz format (just a renamed .zip, for those who are less familiar) in which all the images inside the comics are in .webp format. I am running Budgie 21....
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2 votes
1 answer
1k views

How to create custom thumbnailers for Nautilus, Nemo, and Caja?

Nautilus (GNOME Files) and Nautilus-based file managers, namely Nemo and Caja, already create previews for many common file types with their default thumbnailers. There are also a number of other ...
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366 views

How to preview JP2 and J2K images on Nautilus and Nemo?

I have a number of JPEG-2000 .jp2 and .j2k images that I want to preview on Nautilus or Nemo. How can I tell the file managers to create thumbnails for those files?
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Starred files function became broken, can you help me fix it?

I have a problem where I can not STAR any new files or folders in Ubuntu 21.04 until after I reboot. Additionally, any files shown in a 'symlink folder window' cannot be starred, nor do they show as '...
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RAW Thumbnails in Nautilus (Sony .ARW)

I am struggling to have RAW Thumbnails show in Nautilus. I am using Ubuntu 21.04 & specifically Sony ARW from Sony A6000, Nex 6 & Nex 3 cameras. All of these use the same arw with embedded jpg ...
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2 votes
1 answer
209 views

gnome-shell: Error while loading thumbnail

I was checking the output from journalctl and I see a large number of the following entries: gnome-shell[5944]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat ...
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309 views

How to fix tumbler: random image thumbnail sizes in Thunar

Premise OS: Ubuntu 20.04.2 DE: Gnome 3 gnome-shell --version: 3.36.7 In normal circumstances, I prefer not to re-generate thumbnails too often, in order to spare some lifespan for my SSD. org.gnome....
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How to review thumbnails for photos on file browser?

On Ubuntu 20.04, I can't see thumbnails for photos on the file browser. Appears only an image icon for each file. How to get thumbnails instead of icons?
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2 votes
1 answer
141 views

F11 has suddenly become my screenshot key

I'm new to using Ubuntu on a PC (but many many years ago, worked developing shell scripts in Unix for several years), and am going through the pain of setting up my first Ubuntu PC from scratch. The ...
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2 votes
2 answers
994 views

What are my options to replace Gnome 3's Nautilus in the least intrusive way?

I use stock Ubuntu 20.04.2 with the Gnome 3.36.8 desktop (according to gnome-control-center's About tab). Nautilus version: 3.36.3 Dismay: I have a hard time organizing my photos in Nautilus, because ...
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4 votes
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1k views

show thumbnails in file chooser dialog

is there any way to show thumbnails in file chooser dialog in ubuntu or in any other distro ?
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147 views

foder an file, thumnails, for all types of files. Ubuntu 20.04.2 [duplicate]

20.04.2. I just uninstalled my windows 10 and I'm feeling much better already. I would like to have thumbnail preview icons for all types of picture formats and video formats. I would also like to see ...
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2 votes
0 answers
91 views

How can I view images smaller than the typical thumbnail size at their original size?

I'm using 20.04 and I've noticed something that I really don't like about it: in Pictures, small images such as pixel art or icons are scaled-up as thumbnails. This is annoying because I remember ...
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195 views

DigiKam update not showing thumbnails after upgrade

Upgraded Ubuntu to 20.04.02 and digiKam (upgraded to 6.4.0) now shows only handful of thumbnails (out of about 12,000 in the db). db location (Settings, Configure Digikam, etc) is correct. Digikam ...
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161 views

there a way or setting for better and bigger thumbnails in the file manager? especially when not showing

is there a way in ubuntu 20.10 to see bigger and or better thumbnails of pictures in the file manager? Especially if your're uploading pictures as a photographer. in the picture you'll see what I ...
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2 votes
2 answers
2k views

File manager in Ubuntu 20.04 not showing thumbnails

Just as the subject line says, I'm not getting any thumbnails. Not for jpg, not for png, and not for videos either. It's the regular file manager that comes with this installation ("Simple file ...
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1 vote
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115 views

Android phone connected via usb - thumbnails not showing

Galaxy s1oe phone connected via usb to ubuntu 20.04 Folders show up just fine, I just don't see the thumbnails. It must be a permission thing. How to fix this ? Thanks.
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1 vote
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2k views

HEIF/HEIC Thumbnail issue

I have an issue with HEIC thumbnails. I can open heic files via the image viewer, however, I can't get the thumbnails showing. when I try installing heif-thumbnailer by running sudo apt-get install ...
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2 votes
1 answer
2k views

video thumbnails not showing in 20.10, HattinGokbori87 solution doesnt work

How to get video thumbnails to show in Ubuntu 20.10? I tried this solution Thumbnails not showing in video in Ubuntu 18.04 but does not work for 20.10 I currenty can see pdf and jpg thumbnails but not ...
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2 votes
1 answer
147 views

Nautilus in Ubuntu 16.04 can't show pdf thumbnail

I have installed Ubuntu 16.04 on two machines. One can show pdf thumbnail, another can't. I tried to install and reinstall evince, but still, it is not shown. Anyone knows what am I missing? Here is ...
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1 vote
1 answer
287 views

3GP video thumbnails not displayed

3GP/3GPP (.3gp) videos have no thumbnails in Nautilus or Nemo. How can this be fixed?
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3 votes
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215 views

.xcf humbnails on the desktop with xfce

I use Xubuntu 20.04. To enable thumbnails for my .xcf (GIMP) and .kra (Krita) files, I followed this guide, and with this I get the correct thumbnails in Thunar. However, for a .xfc-file on my desktop ...
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3 votes
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910 views

Viewing Thumbnails Over USB (MTP)

When managing files on an Android device over USB (MTP), and in particular photos & videos, it's essential to be able to see thumbnails. They appear painlessly & automatically on Windows, but ...
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259 views

Generate preview thumbnails of all images in a directory for nemo

I would like to be able to force nemo to create preview thumbnails for all images in a directory, not just the ones for the currently visible icons. The reason is I have some folders with thousands of ...
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1 vote
1 answer
538 views

Nautilus - Thumbnailer for Ms Office documents in Ubuntu 20?

Under Ubuntu 18.10, Ubuntu 18.04 LTS and Ubuntu Gnome 16.04 LTS, I used the method described here (http://www.bernaerts-nicolas.fr/linux/76-gnome/325-gnome-shell-generate-msoffice-thumbnail-nautilus) ...
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71 views

thumbnails of videos in LUKS partition not getting generated

i encrypted a partitions using LUKS but now video thumbnails are not generating (in that particular partition) although image thumbnails are there, i tried with the ffmpegthumbnailer command but not ...
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343 views

Mpeg-2 (.ts) videos don't have a thumbnail?

Is there any easy solution for getting thumbnail for .ts videos (Mpeg-2) in ubuntu? currently they are just grey! tried installing ffmpegthumbnailer as recommended here: MPEG2 Transport Stream (MTS) ...
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2 votes
1 answer
562 views

Nautilus PDF Thumbnail Not Loading

I deleted my ~/.cache/thumbnail folder but some of the PDFs' icons are still not properly displayed. They are still displayed using the default PDF icon. I am attaching a screenshot of the icons. I ...
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1 vote
1 answer
153 views

Music folders don't have album covers as thumbnails

Using Ubuntu 20 latest. When I open my folders and go to my music in my external hard disk, I can't see the image of the album in the album folder. Is there any way that I can see the image of the ...
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1 answer
177 views

Thumbnails stopped working in GNOME

After a system clean-up, my Nautilus doesn't show thumbnails for new images any more. I reinstalled every package with the words “thumbnail” or “preview” in description, but nothing works. What did ...
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2 votes
1 answer
440 views

Mate desktop 20.04 hovering panel thumbnail causes excessive CPU usage

Observed on Mate 20.04 .iso install, host and VM. When I hover over the windows on the panel, it is supposed to generate a thumbnail for the window. When that works correctly, there is no problem(...
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2 votes
1 answer
412 views

how to make thumbnail cache permanent?

I'm trying to thumbnail an entire image directory consisting of upwards of 100,000 files, a thousand per sub-directory, to minimize delays displaying the thumbnails for each directory. (Making it ...
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1 vote
2 answers
359 views

How tell my Ubuntu to look for thumbnails not only in ~/.cache/thumbnails?

If a specific app does not store the thumbnails it generates for its type of files into the usual ~/.cache/thumbnails then those thumbnails are only shown inside that specific app and not in default ...
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2 votes
2 answers
872 views

GiMP ( snap ) and thumbnails for .xcf files

On Ubuntu ( Budgie ) 20.04 when using Gimp as a snap, you’ll see thumbnails for .xcf files only « inside » Gimp and nowhere else ( Nemo, Nautilus, gThumb… ) 1⋅ how tell my session to look for ...
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2 votes
0 answers
95 views

Xubuntu 18.04 Thunar shows video and image thumbnails, but it doesn't show PDF covers

Xubuntu 18.04 Thunar shows video and image thumbnails, but it doesn't show PDF covers. It did show PDF covers in the past, but no longer does.
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1 vote
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105 views

Can Nautilus create thumbnails in separate directories for each mount point?

I've got some external and network drives and I have noticed that Nautilus keeps a single directory in ~/.cache/thumbnails which it uses to store thumbnails of these external drives right along with ...
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Is there a way to change the icon size of the file selection dialog?

I would like to have actual thumbnails here instead of this list and that tiny thumbnail on the side:
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