1. How to use Preloaders.net web-application?
2. How to embed AJAX loader in your application? (sample scripts)


Here you can find detailed instructions on how to use the Preloaders.net web-application in order to create animated GIF or animated PNG loading image.

APNG support

The following image tells if your browser supports Animated PNG format: animated png browser test

GIF and APNG Generator form

Select your preloader

Select preloader 1) Click on the box on the right.
2) From the appeared dropdown select the desired preloader

Image type

Image typeHaving clicked on a radio button, you will get the corresponding image type. In case you click GIF you will get an animated GIF image and in case of PNG you will get an animated PNG image after you click the "Generate preloader" button.

Note: .GIF format supports only absolute transparency or no transparency at all. Therefore, when you select the GIF format and set background to transparent you will still be able to set a background color that will fill the back layer of semi-transparent parts of your image. Let us take a poker chip ajax loader as an example:

transparent gif transparent png
GIF image PNG image

Transparent background

Transparent background Set the background of a preloader to transparent. For animated GIF images all semi-transparent pixels will be in front of the selected background color.

Foreground color

Foreground color The color of the preloader itself. The overlay of a color is placed in regards to colorization algorithm (the more pixel color is close to black the more it is close to the color selected in this field). In order to invoke the color picker just click on the foreground color textbox

Background color

Background color The background color of a preloader. All transparent pixels will be filled with the given background. In case of usage of "Gray to transparent" function the pixels that are converted to semi-transparent will be filled with the selected background color with the respective foreground color amount

Animation speed

Animation speed Identifies the interval of time between frames switching. The closer the slider is to + the faster the animation goes and vice versa

Preloader size

Preloader sizeDenotes width and height of a preloader in pixels. The default best quality maximum size of each image is set when selected from the list. In order for the image to have proportional width and height, check the "Constrain proportions" box and it will change the other parameter in regards to the entered one. If you want to get back to the original size of the image, click on the "Reset sizes" link under "Preloader size" title.

Keep original colors

Keep original colorsThis feature allows to generate preloaders with the default coloring scheme provided.

Invert colors

Invert colors Inverts all colors of the image.

Flip image

Flip image Flips images vertically and/or horizontally.

Note that some images are not affected by this feature as they may be absolutely symmetric in respect to center point

Use environment colors

Use environment colorsMake the background color reflect in the preloader image.

This feature is disabled when "Keep original colors" option is on. For example:

Environment colors transparent sample Environment colors opaque sample
With env. colors No env. colors

Reverse animation

Reverse animation Set the sequence of preloader frames in reverse order, so animation goes backwards if the option is selected

Frames amount

Frames amount The total amount of frames in the generated image.

It\'s advised to reduce frames amount by 4, 8, 16 and so on, otherwise it may negatively affect the animation quality

Generate automatically

Generate automatically Having set this option to "Yes" you will get preloaders generated automatically 2 seconds after changing any parameter

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