Free thumbnails software for linux

GD::Thumbnail is a thumbnail maker for GD.

SYNOPSIS

use GD::Thumbnail;
my $thumb = GD::Thumbnail->new;
my $raw = $thumb->create(test.jpg, 80, 2);
my $mime = $thumb->mime;
warn sprintf "Dimension: %sx%sn", $thumb->width, $thumb->height;
open IMG, ">thumb.$mime" or die "Error: $!";
binmode IMG;
print IMG $raw;
close IMG;
or
use CGI qw(:standard);
use GD::Thumbnail;
my $thumb = GD::Thumbnail->new;
my $raw = $thumb->create(test.jpg, 80, 2);
my $mime = $thumb->mime;
binmode STDOUT;
print header(-type => "image/$mime");
print $raw;

This a thumbnail maker. Thumbnails are smaller versions of the original image/graphic/picture and are used for preview purposes, where bigger images can take a long time to load. They are also used in image galleries to preview a lot of images at a time.

This module also has the capability to add information strips about the original image. Original images size (in bytes) and resolution & mime type can be added to the thumbnails upper and lower parts. This feature can be useful for web software (image galleries or forums).

This is a Yet Another type of module. There are several other thumbnail modules on CPAN, but they simply dont have the features I need, so this module is written to increase the thumbnail population on CPAN.

The module can raise an exception if something goes wrong. So, you may have to use an eval block to catch them.

Thunar Thumbnailers is a plugin for Thunar file manager, that can generate thumbnails of files inside the file manager.
Thunar uses external utilities - so called thumbnailers - to generate previews of certain files. Thunar ships with thumbnailers to generate previews of image and font files and can automatically use available GNOME thumbnailers if it was build with support for gconf.
However, even then, there are several file types for which no thumbnailer exists. The thunar-thumbnailers project provides additional thumbnailers for Thunar, that also cover less common file formats.
Supported Formats
Thunar-thumnbnailers generates thumbnails for the following formats:
- EPS
- Postscript
- Fig (.fig)
- LaTeX (requires tetex)
- Raw Digital Camera Images (requires dcraw)
- Grace (requires grace)
And in the near future, hopefully:
- Video files (using ffmpegthumbnailer)
- Icon files (.ico)
Enhancements:
- Added an option --disable-update-mime-database to configure to make life easier for packagers

GD::Image::Thumbnail is a Perl extension for creating thumbnailed images with GD.

SYNOPSIS

use GD::Image::Thumbnail;

my $img = GD::Image->new(100,20);

my $thm = $img->thumbnail; # same as { factor => 0.20 }
my $thm = $img->thumbnail($n); # same as { side => $n }

my $thm = $img->thumbnail({ factor => 0.25 });
my $thm = $img->thumbnail({ factor => 0.25, small => 1 });

my $thm = $img->thumbnail({ side => $n });
my $thm = $img->thumbnail({ side => $n, small => 1 });

my $thm = $img->thumbnail({ w => $w });
my $thm = $img->thumbnail({ h => $h });
my $thm = $img->thumbnail({ w => $w, h => $h });

my $thm = $img->thumbnail({ w => $w, small => 1 });
my $thm = $img->thumbnail({ h => $h, small => 1 });
my $thm = $img->thumbnail({ w => $w, h => $h, small => 1 });
thumb() ^
thumb() is shortcut for thumbnail() - useful for people who like to bite their nails :)
$img->thumbnail(@thm_args)
and
$img->thumb(@thm_args);
are doing the same thing

OPTIONS

factor => $n

This makes a thumbnail $n (0.20 by default) times the size of the original. Only a two decimal place number between 0 and 1 are allowed. If a factor is given side, h, and w are all ignored

side => $n

Makes the side that will result in a larger thumbnail $n pixels (or opposite if small => 1). If side is given then h and w are ignored.

w => $x and h => $y

You can specify one or both of these. If only one is given it makes that side that dimention. If you specify both, the side that will result in a larger thumbnail (based on the images orientation and *not* the values of w and h if different), is used (or opposite if small => 1).

small => 1

If true make the images the smallest possible. This will round down instead of up when rounding is necessary and will help decide which side gets set to the given value.

$img->thumbnail(10); # 100 x 25 image becomes 40 x 10
$img->thumbnail({ side => 10, small => 1}); # 100 x 25 image becomes 10 x 2
resample => 1

If true use copyResampled() instead of copyResized() See GDs documentation about the difference. This can also be turned on by specifying a true value as the second argument:

$img->thumbnail($n, 1);
$img->thumbnail({ factor => $n }, 1);

gThumb is an image viewer written for the GNOME environment. gThumb lets you browse your hard disk, showing you thumbnails of image files.
It also lets you view single files (including GIF animations), organize images in catalogs, print images, view slideshows, set your desktop background, and more. gThumb also
Main features:
Image Viewer
- View single images (including GIF animations). Supported image types are: BMP, JPEG, GIF, PNG, TIFF, ICO, XPM.
- View EXIF data attached to JPEG images.
- View in fullscreen mode.
- View images rotated, flipped, in black and white.
Image Browser
- Browse your hard disk showing you thumbnails of image files.
- Thumbnails are saved in the same database used by Nautilus so you dont waste disk space.
- Automatically update the content of a folder.
- Copy, move, delete images and folders.
- Bookmarks of folders and catalogs.
Image Organizer
- Add comments to images.
- Organize images in catalogs, catalogs in libraries.
- Print images and comments.
- Search for images on you hard disk and save the result as a catalog. Search criteria remain attached to the catalog so you can update it when you want.
Image Editor
- Change image hue, saturation, lightness, contrast and adjust colors.
- Scale and rotate images.
- Save images in the following formats: JPEG, PNG, TIFF, TGA.
Advanced Tool
- Import images from a digital camera.
- Slide Shows.
- Set an image as Desktop background.
- Create index image.
- Create web albums.
- Rename images in series.
- Convert image format.
- Change images date and time.
- JPEG lossless transformations.
- Find duplicated images.
- Write images to CD/DVD.
- Fully documented.
Bonobo Component
- Image viewer component. Differences with the EOG component: display GIF animations; print the image and its comment.
Enhancements:
- Fixed bug #448644 - Image brightness-contrast doesnt trigger save-ability.

Themus is a collection of theme utilities for GNOME 2.2.
Main features:
- Being able to navigate in Nautilus to themes:/// to view your installed themes.
- Thumbnails for themes in Nautilus.
- A tab in the Nautilus properties for themes.
- Drag and drop support for themes; if you drag a theme into the Nautilus window, it will be installed; if you drag a theme out of the window, the theme file will be saved (though not an entire theme archive).

Dynalbum is a fully dynamic automatic Web photo album generator. The album includes an index page with thumbnails, navigation tools on each album page, and four sizes of each picture.
The entire album is dynamically generated from a directory of JPEGs, TIFFs, PNGs, and GIFs when it is accessed. Unlike other photo album generators, it doesnt clutter files with thumbnails and static HTML.
DynAlbum generates each page and each scaled image (including thumbnails) dynamically every time it is accessed. This means that theres no need to keep static copies of anything but the original pictures.
INSTALLATION:
Copy the dynalbum.py program to the file "index.py" in your image directory. You need to enable mod_python for this directory. This can be accomplished either in your httpd.conf (/etc/httpd/conf/httpd.conf or /etc/httpd/conf.d/python.conf) or in a ".htaccess" file.
The .htaccess file is placed in your image and adusts web server parameters for that directory. In order to use a .htaccess file you may need to enable support using the "AllowOverride" directive in the global apache configuration.
httpd.conf example:
DirectoryIndex index.py
AddHandler python-program .py
PythonHandler mod_python.publisher
PythonInterpPerDirectory On
.htaccess file example:
DirectoryIndex index.py
AddHandler python-program .py
PythonHandler mod_python.publisher
PythonInterpPerDirectory On
and change the relevant instance of "AllowOverride None"
in httpd.conf to "AllowOverride All" to enable .htaccess
support in Apache.
Enhancements:
- Generates multi-page image indexes
- Dynamically generates ZIP archives

mplayer-snapshot creates one big thumbnail from movie using mplayer. Its a small program to take images from movies using mplayer as banked. I didnt test it on all video formats so suggestions are welcome.

KPhoTools is a program for KDE which helps you creating fast online photo galleries in HTML.
KPhoTools is an Image Album generation tool. It creates an HTML Album containing your Images in HTML which can be published as webpage. It can rotate/resize images, blend logos, create thumbnails, and create albums in several styles.
Main features:
- Rotating images
- Rezising images
- Create thumbnails
- Image filters (*)
- Several styles
- Logo Blending
Features of the albums are:
- Simple and clean indexing
- Nice overview of your pics
- Slideshows
- No PHP needed! (only HTML & Javascript)
- Preloading (no empty boxes on screen)
- Not present pics wont be loaded (box will be shown)
- Screenshot function
- Screenshots from desktop
- Screenshots from selected areas on your desktop
- Screenshots of single windows