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One method is to use the original image/layer as its own layer mask. You'd create a duplicate of the layer, desaturate and invert it, pasting the greyscale result into the original layers layermask.
Update: Here are some step by step instructions:
Start with your flattened image:
Add a Saturation/Hue adjustment layer and turn down the Saturation until the ...
122
You can use blending to add transparency:
Right click the layer you want to add transparency to, pick the "Blending Options..." (If unable to pick 'Blending options' ensure that the layer is unlocked)
Locate the scale under the "This layer:" that is under the "Blend if" box
Press and hold the alt key while dragging on the white knob, the further you drag it ...
86
Using fast bucket fill instead of contour selection
Note: This tutorial is also available in PDF.
Add an alpha channel
Some image types lack a transparency channel; JPG for example. If this is the case, add an alpha transparency channel.
This is done by selecting Layer → Tranparency → Add Alpha Channel.
Bucket fill with colour [optional]
The next step ...
55
You can't save transparency to a .jpg. The file format simply doesn't support it. Anything that is transparent will become white when saved to a .jpeg.
Try .png or .gif, those file formats do accept transparency.
50
You are correct--that "checked background" is how many programs indicate transparent areas. SVG files have a transparent background. Changing the background color is not part of the SVG standard, so changing the background color in Inkscape won't carry over to the SVG file when its viewed in a browser.
There are a few ways to get a solid background color:
...
49
Basically it blocks 50% of what is left behind, as opposed to being a pure 50% opacity in a additive way. Therefore working in an inverse exponential way towards 99.999...% opacity.
So laid on top of each other:
1st stroke: 50%
2nd stroke: 75% (50% + 50% of 50%)
3rd stroke: 87.5% (75% + 50% of 25%)
4th stroke: 93.75% (87.5 + 50% of 12.5%)
5th stroke: 96....
45
JPG does not allow transparent backgrounds.
The only thing you can do is have a flat color background that would blend into your website: eg. if your website background is white, then have JPGs created with a white background.
Otherwise you need to consider saving as PNG, which does allow true transparency.
44
Whenever we choose to change a color to transparent with the Layer > Transparency> Color to alpha tool we will also introduce semi-transparency of colors different to the selected. Below this is shown for making white in the background transparent:
In case this is not wanted we need to select only a single colored area for transparency. This can be done ...
34
Double click your background layer in the layer pallet (to make it into a standard layer)
Choose Selection -> Color Range
Click in the white area of the image
Bring the fuzziness up around 90
Click OK
Hit DELETE and there you go!
27
You could use the "difference" layer mode to create a layer mask, and apply it to B like this:
Open both images as layers, A on the bottom, B on top
On the layer's dialog, mark B's layer mode as "difference". You now
should see the image mostly black is the images are alike, with the
colored areas marking the areas that are different. These colors,
however, ...
25
The picture doesn't change. The background color of the page does.
It's a transparent PNG. The whites are not visible on a white background. The blacks aren't visible on black background.
The normal post is on white. The modal view is on black.
If you change the background color...
24
As of Photoshop CC 2015.5 you can now have artboards with transparent backgrounds.
Either create a new Artboard and select Transparent under the Background Contents menu or, if you have an existing artboard, simply select it in the layers panel, open up the properties windows and change the background with the Artboard background color dropdown. (Note that ...
20
Got 2 answers for you...
Select Rectangle 6 and click on make exportable, now click Create Separate Slice Layer (the little knife) and simply drag the shown image to your desktop to export it.
(The better answer) Instead of using a transparent rectangle, create an Artboard. Hit A and drag a 50x50 box. Add your star, select the Artboard and click Make ...
19
Some initial notes
Let's make a google search (images):
https://www.google.com/search?q=crystal+logo
1) You can see how difficult is to make an abstraction of a crystal. Verey few logos succeed there.
2) "How to make an illustration" depends on what kind of illustration do you want. The key word here is "style".
Depending on what is this ...
19
Yes, that would be very easy, I just opened up Gimp 2 my self and tried it out to make sure! :p Anyway, in the layers panel, right click and choose New Layer.
Then make sure you select White for the Layer Fill Type.
Now, click OK and move the new white layer to the bottom of all the current layers.
To change the layer color, select it and just paint it in ...
19
Each stroke is moving 50% from the current color towards the brush color. The formula would be 100% * (1 - (brush opacity ^ number of strokes)). So going from white to black, you will have:
50% gray
75% gray
87,5% gray
93,75% gray
96,875% gray
98,4375% gray
...etc, slowly moving towards black.
I.e, you'll never actually truly reach full opacity, but at ...
17
The alpha value is used in the RGBA colour space to indicate the transparency of a colour. The alpha value goes from 0 to 1 where 0 is completely transparent and 1 not transparent at all.
This allows to do "alpha compositing" which, in lay terms, is the process of placing an image on top of a background and to combine the colours to create the illusion of ...
17
JPEG doesn't support transparency at all.
Most compatible option is to use PNG, but results in large files for photographs because it is lossless compression.
Another option is to use the new WebP file format which supports both lossless (like PNG) and lossy compression (like JPEG), and allows transparency with both. Support for WebP is relatively good ...
16
While the JPEG format can't handle transparency itself, it is entirely possible to have transparency using JPEGs with modern browsers. It is, however, complicated. It involves using SVG to create a clipping mask that handles the transparency. With Photoshop, you can do this with the pen tool, and then export to Illustrator, where you can convert the pen tool ...
15
Ctrl/Command+Click the green channel thumbnail in the Channels Panel
Hold down the Option/Alt key and...
Click the New Layer Mask button at the bottom of the Layers Panel
Save....
14
This is something I was looking for as well. The code was almost identical to the sample code of the CodeLab Tutorial Part 1 - Simple plugins walkthrough. So after a couple minutes, there is now a simple plugin to do this job right from Paint.NET.
https://github.com/friedrickjoel/AlphaColor/raw/main/AlphaColor.dll
14
Here is another method to make a selection semi-transparent.
Choose Layer > Transparency > Add Alpha Channel if not yet done.
Select your area.
Choose Select > Float (ShiftCtrlL) for creating a floating selection layer.
In the "Layers" tab from the layers menu (CtrlL) choose the "Floating Selection", leave it Normal and set desired opacity.
Note that if ...
13
When assigning white as alpha channel for transparency we will not be able to have opaque highlights, as these per definition will be white, hence fully transparent.
To have an alpha channel sparing both highlighted white areas, and black shadows we better choose a grey color for assigning alpha.
To show the effect more clearly I first made your original ...
13
For this, you best create separate channels for the shadows and highlights.
The shadows can be directly taken from the white T-Shirt, and be used as a multiplicator (0-100%) for the shirt's color (layer mode: multiply)
As for the highlights, this really depends on the material. Cloth doesn't reflect much light on the surface, so most of its color comes ...
13
What is happening is when you trace your image, Illustrator is making your "transparent background" into "white space". What you need to do is remove this from your trace.
1.Menu > Window > Image Trace
2.A new window will open. This will give you a lot of trace options
you can play with and the one in particular you are looking for is
under the ...
13
How about a light box? They are cubes made of some sort of semi-translucent fabric that diffuses the light. You can probably find something like that in your local photography equipment store. Here is one:
http://www.ezcube.com/
I made my own, though, out of cardboard and velum paper. And I used plain 100W lights instead of professional ones. Here is a ...
13
You should expand the small triangle on the appearance panel and adjust as usual -
If it does not work - probably the problem it the way you created the shapes
13
Duplicate the object that you wish to create a reflection of and flip it vertically (Object > Transform > Reflect, making sure you choose Horizontally)
Duplicate the "reflection" group that you just made in the last step, then use the Pathfinder to combine all of the shapes into one
Fill the new path with a black to white gradient (black = transparent)
...
13
If you want to remove the transparency of the partially transparent pixels, use Layer>Transparency>Threshold alpha. Depending on the threshold this will either make the edge pixels totally transparent or totally opaque.
But these semi-transparent pixels are there to make the edges appear smooth, you normally want to keep them. If you need to remove them the ...
13
In the Export dialog box, tick the 'Use Artboards' option. This saves the image including the containing artboard, what you're seeing as the white frame behind your logo.
If you need to re-adjust the white area (the artboard), hit Shift+O and drag the square handles which will appear at the edge of each side or at the corners.
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