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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1 answer
139 views

Why does Nautilus take longer to display MP3 thumbnails as opposed to other file types?

I'm on 22.04 with Cinnamon but I have noticed this for a long time indeed with 20.04 and 18.04. When I open Files (Nautilus) and navigate to a directory that contains MP3 files, the thumbnails take ...
0 votes
0 answers
7 views

Gnome Files (Nautilus) How to set maximum file size to get a thumbnail?

Gnome Files browser shows thumbnails for files up to certain size. How can I change that size? I have found a pull request that removed it from the preferences, and from there, I found that I can ...
0 votes
1 answer
39 views

Nautilus not displaying previews for images, but for video/pdf it is working

Nautilus did not load any previews for images and videos. After installing some thumbnailers like ffmpegthumbnailer and evince-thumbnailer, I do have previews for videos and PDF files, but still not ...
9 votes
3 answers
12k views

How do I get video thumbnails on Ubuntu 18.04.1 LTS?

Video thumbnails simply stopped showing. I still get the PDFs and images thumbnails, but the video ones are no longer showing. I've already tried everything I found in Google, but nothing works. ...
0 votes
0 answers
18 views

nautilius views icon or thumbnail

I have several folders containing short videos. Some folders show video icons. Some folders show thumbnails. How do I control which is which? I'm on ubuntu 20.04.6 LTS and files v. 1:3.36.3.0ubuntu1....
5 votes
1 answer
9k views

How to repair corrupted JPEG files that still have their thumbnails?

I've got a bunch of photos that were on an SD card. Most of them are corrupted now and I cannot open them in any program (Gwenview, GIMP, same on Windows...). But every file browser can still ...
0 votes
0 answers
68 views

Is it possible to check what file tumblerd is currently looking at?

I just cloned a big folder and tumblerd has started eating my CPU. I'm now curious about what particular file it is working on. Is there any way to see what file it is currently trying to make a ...
8 votes
1 answer
3k views

How to Display .HEIC thumbnails in Nautilus?

What are the steps to configure 16.04's Nautilus file manager to display thumbnails of .HEIC photos? file IMG_1001.HEIC IMG_1001.HEIC: ISO Media
2 votes
1 answer
951 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 in Nautilus - Thumbnailer for Ms Office documents to successfully generate thumbnails for Microsoft Office ...
0 votes
0 answers
28 views

thunar regenerate thumbnail for a single image

I see there is a solution to regenerate all image thumbnails, but what if I do not want to regenerate all thumbs, but just for one image. the thing is, that if I rotate an image using for example: ''' ...
0 votes
0 answers
106 views

Is there any way to debug gnome-epub-thumbnailer?

I have been trying to use gnome-epub-thumbnailer in Ubuntu 23.04. The program installs & I am able to run gnome-epub-thumbnailer -s 1024 test.epub out.png successfully, but even after rm -r ~/....
38 votes
3 answers
57k views

How do I reset the thumbnail cache?

I have a lot of images on my laptop as I work in graphics. On the same system, I also have a folder containing my family pictures. I would like to do two things: Empty the already cached images and ...
4 votes
2 answers
1k views

Enabling thumbnails for AVIF, JXL, HEIF, HEIC images

Sometimes I download .avif images from the Internet. I would like the thumbnails of these images to appear in Files (nautilus). How do I enable thumbnails for AVIF images? Also, can I enable ...
4 votes
0 answers
319 views

How can I preview iPhone photos in Nautilus file manager?

I've selected the Nautilus setting to always show thumbnails and it works when browsing most directories containing images with Nautilus, but it doesn't work for my iPhone directory. How can I ...
0 votes
0 answers
115 views

A Program Reports Maximum Thread Count Reached RLIMIT_NPROC, Despite Actual Thread Count Being Way Below Limit

I encountered a strange problem with thumbnail generation in Nautilus. I noticed that the totem-video-thumbnailer was not working correctly and it was consuming so much CPU, so I attempted to manually ...
1 vote
2 answers
134 views

Unique values separated by semicolons (thumbnailers)

The file /usr/share/thumbnailers/totem.thumbnailer contains: [Thumbnailer Entry] TryExec=/usr/bin/totem-video-thumbnailer Exec=/usr/bin/totem-video-thumbnailer -s %s %u %o MimeType=application/mxf;...
7 votes
3 answers
13k views

File manager in Ubuntu 20.04 not showing thumbnails

The file manager that came with my installation ("Simple file manager for Gnome") doesn't show thumbnails for jpg, png, and videos. I've gone to /Preferences/Search & Preview and made ...
6 votes
2 answers
2k 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 ...
43 votes
6 answers
70k views

Thumbnails not showing in video in Ubuntu 18.04

I have Ubuntu 16.04 LTS and I've manually installed Ubuntu 18.04 LTS. Everything looks fine except video thumbnails. How to solve this?
1 vote
1 answer
2k 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 ...
2 votes
2 answers
2k views

18.04 file manager preview thumbnail size

Running Ubuntu 18.04 LTS. Trying to figure out if I can adjust thumbnail size of previews in the file manager. Right now with the Pictures folder open, I have 7 rows of 11 files each. I'd like to have ...
4 votes
3 answers
2k 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 ...
2 votes
2 answers
3k views

How to generate thumbnails in advance (pdf mostly) [duplicate]

I have a rather large set of documents (150 GiB ~5000 files) and would like to know how to pre-generate thumbnails, preferably from the command line, so that when I navigate to the folder, I don't ...
2 votes
0 answers
276 views

PCManFM Regenerates Thumbnails every time I open a folder

I am running Xubuntu 22.04.1 with PCManFM 1.3.2. Whenever I enter a folder with some images, one of my CPU cores spikes up to 100% for a few seconds as the thumbnails slowly roll in. This makes me ...
0 votes
0 answers
115 views

Nautilus not showing song's cover art of .m4a files

I have some songs in .m4a format. These songs have a cover art, but on Nautilus I can't see it. If I open it with VLC or If I put these songs on my Android phone, I can see the cover art, so I think ...
1 vote
0 answers
487 views

Website thumbnail/image/icons not loading properly

On youtube, the video thumbnails are greyed but the hover previews works. I can click to play a video but the thumbnails would also be grey. On Reddit, the icons appear as square boxes with ...
17 votes
2 answers
4k 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 ?
2 votes
1 answer
3k views

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 ...
8 votes
4 answers
6k views

how to stop saving thumbnails in ~/.thumbnails

File manager keeps thumbnails in ~/.thumbnails even after the original photo is deleted. It's really annoying and I feel like it's insecure if some one can see a photo that I've deleted. I want this ...
0 votes
0 answers
55 views

Nautilus doesn't generate thumbnails when account is admin on Ubuntu 22.4.1

When I browse this folder: admin:////usr/share/backgrounds/ I can't see any thumbnail for .png/.jpg files there, but when using my normal acc it works ok. Also how to generate thumbnails on remote ...
9 votes
2 answers
4k 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 ...
19 votes
3 answers
5k views

How to set the first picture of every folder as its folder icon?

If there are pictures in folder A, B, C.....Z, how do I automatically set the first picture in each of these folders as its folder icon? Is there a way like a script or something else?
0 votes
0 answers
301 views

Thumbnails in Files are too small (22.04)

When I open a folder in Files, I can choose between a file list or thumbnails. In the case of images - a miniature of the image. Then I can zoom, but I can only zoom up to '133%', which still gives me ...
20 votes
11 answers
46k views

Why I can't see the thumbnails in Nautilus?

Problem Loading Thumb Previews: This started to happen after upgraded Ubuntu from 12.04 to 12.10.
8 votes
1 answer
4k 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 ...
2 votes
0 answers
229 views

Video Thumbnails are not generating [duplicate]

I upgraded to Ubuntu Desktop 22.04.1 from 20.04.1 a few months ago, I recently noticed that MP4 and MKV video files are not generating thumbnails for Nautilus anymore. WEBM files are working fine ...
9 votes
2 answers
3k views

Can I make nautilus show book covers as thumbnails for Epub files?

The Problem Can I make nautilus show thumbnails of book covers for files in .epub format? It shows thumbnails for pdf files but not .epub. Is this achievable by adding a thumbnailer? Each of these ....
3 votes
0 answers
704 views

.xcf thumbnails 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 ...
2 votes
1 answer
288 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 ...
11 votes
2 answers
22k views

Fix thunar doesn't show image/video thumbnails in xubuntu 18.04

No matter what I do the result is there no image/video thumbnails $ thunar --version Thunar 1.6.15 (Xfce 4.12) $ sudo apt install tumbler tumbler-plugins-extra ffmpegthumbnailer Reading package ...
1 vote
1 answer
1k views

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 ...
1 vote
1 answer
49 views

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 ...
6 votes
1 answer
3k 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 ...
11 votes
5 answers
5k views

How to regenerate a specific thumbnail in Nautilus?

Sometimes I crop PDFs in order to have a one-page reading instead of a scanned two pages. However, nautilus keeps an old thumbnail showing the former front page. I know that I can delete the hidden ...
1 vote
0 answers
503 views

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 ...
2 votes
0 answers
355 views

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-...
2 votes
0 answers
22 views

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 ...
3 votes
0 answers
32 views

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 ...
0 votes
0 answers
291 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....
8 votes
1 answer
7k 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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