Everything you ever wanted to know about transparency but were afraid to ask.

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27
votes
2answers
106k views

Making the background of an image transparent

I have some jpg images and I need for each of them to have a transparent background. I have GIMP as a graphic tool. I need to put them in a web page and I need to see just the main element and have a ...
13
votes
5answers
26k views

Copy & Pasting from Photoshop to Illustrator loses transparency

I often run into this issue. I'm creating a file in Photoshop with masked layers etc. I want to make the final output available for some mock-ups in Illustrator, so I rasterize the layers and marquee ...
12
votes
4answers
36k views

Photoshop CS5: Setting a black background to transparent

I have an image of smoke over a black background. If I set the blending mode of this layer to screen, the image's background is perfectly edited out, however if there isn't another layer below this, ...
11
votes
8answers
3k views

Transparency to unpremultiplied RGB + Alpha

I have a transparent layer in Photoshop CS5 (so internally, it's most probably stored as unpremultiplied RGB component plus an alpha component per pixel). Now I want to transform this to an opaque ...
11
votes
3answers
37k views

Add transparency to an existing PNG

I'd like to use this image on a web site. What I need to do is change the background from black to transparent, so I can use the arrow on my site maintaining the page background. I used Gimp to ...
10
votes
2answers
6k views

Why does my transparent PNG not look good?

I want to convert a JPG to transparent and using GIMP I added alpha layers and transparency same way I make a GIF transparent I converted it to PNG but it doesn't display well when I load it on my ...
9
votes
4answers
11k views

How does one turn a white background transparent in Photoshop but keep transparency?

In this image, I want to keep the drop shadow, but not the white background.
8
votes
3answers
907 views

Make a desaturated image transparent keeping only shadows & highlights

I've been trying to do this for a few days now and have not gotten the results I need. I'm not sure I'm using the correct terminology in the title, if not, please feel free to correct me, and I'll ...
7
votes
1answer
453 views

Inkscape export format

I have some vector objects created in Inkscape and I am exporting them to a png files. I am using the exported images in another program. The problem is, that even though the initial object is on ...
6
votes
3answers
2k views

Batch replacing color with transparency

I have a very large number of PNG images (too many to practically do one at a time) with a bright pink background and would like to replace the background color with transparency. If this is not ...
6
votes
2answers
3k views

How can I remove white pixels around circles when exporting this to gif?

I took the loaders from here: http://xooplate.com/template/details/10888-5-animated-loading-spinner-action-icons-psd Than I exported them easily, with the help of the included action to a gif. But I ...
6
votes
2answers
184 views

Why does painting with 1% opacity not always do something?

I tried this with Adobe Photoshop Elements 9. When I have a black background, and a white brush with an opacity of 1%, the color should get brighter if I click onto the same spot over and over again. ...
5
votes
4answers
625 views

What is the name of hobby grade equipment to create photos where the background can be easily removed?

I know that in movies they use green screens or similar to be able to edit out the background from shots. But what is the name of a piece of equipment or setup I need in order to take a picture of say ...
5
votes
1answer
141 views

Where are my pixels?

I have a big image 5100px x 7000px. I have made the background transparent, and I am satisfied with the result: the parts of the image which I wanted to keep are there, and the white background is ...
5
votes
2answers
10k views

How to make an animated gif with a transparent background without overlap?

When I try to make a gif with two frames both of which have a transparent background in GIMP, what happens is that the first frame looks OK, then the second frame appears on top of it, such that you ...
5
votes
1answer
256 views

GIF with transparency output not as expected in GIMP

I have been trying to create a GIF using a sequence of PNGs within GIMP An example PNG from the sequence shows the correct transparency I want to be shown in the GIF, But when I process the PNG ...
5
votes
1answer
144 views

How do I remove the alpha channel from the air spray filter in Inkscape?

I'm trying to simulate a cloud of data points around a graph and I found that the air spray filter applied to a copy of that graph will give me almost what I want, especially when changing the ...
4
votes
5answers
11k views

Replace black background with a transparent background

How can I add transparent background on this image instead of black background, but I also would like to keep the partial transparency effect on some of the particles and particles borders. Could ...
4
votes
4answers
3k views

How to paste PNGs keeping the original transparency

Is there a way to directly paste PNG images in Photoshop and keep their transparency? I don't mean dragging them, but directly pasting from, for example, a browser. Transparency is always replaced by ...
4
votes
5answers
701 views

Convert foreground motif to degrees of transparency?

I have a 24-bit PNG where the motif is a subtle pattern. The pattern itself is in light greys, i.e. the background color of the PNG is #eee and the pattern is in a range of slightly darker greys. I ...
4
votes
3answers
682 views

Can I extract shadows from a texture to make a transparent image (png)?

I have this image: And I would like to extract the dark parts (shadows) to make a transparency consisting of black pixels at different alpha channel values. Here is a crude example image of what I ...
4
votes
2answers
2k views

How to remove a green/blue screen background using Photoshop CS5?

Using Photoshop CS5, i'm trying to fully remove background of a picture being shot behind a blue screen. To do this, i am using Color Range method (from Menu > Selection). It works ok for most ...
4
votes
2answers
12k views

Gimp - Using an image as the transparency layer of another image

I have two images (For the sake of simplicity, Image1 and Image2). I want to use Image2 as a transparency for Image1. How can I do that? Assume I've done little more with Gimp than play with some ...
4
votes
1answer
3k views

Using GIMP, can you “erase” a color?

I'm presently working on an iOS application and I am attempting to reverse engineer their standard alert dialog window. I have managed to figure out what the alpha value on the background it uses is ...
4
votes
1answer
689 views

Making parts of Illustrator logo transparent - rather than faking it with the background color

So a designer has given me some logos (for the web) which are white on a blue background. She has, however, added blue paths to the shape to make it match the background. I would prefer to change ...
4
votes
1answer
70 views

How to create transparent 1 bit background as in the sample?

I stumbled upon a background image with transparency I have never seen before (image below). When placed as a background-image on web, it mantains the set background-color and only adds some ...
4
votes
2answers
126 views

How do I avoid selection box shrinkage when working with transparent layers?

TLDR: When I use the marquee tool to select a box around layer and then move it with the move tool, the selection box shrinks to surround the populated region of the layer. Is there a way to keep the ...
4
votes
1answer
434 views

How flatten transparency without rasterization?

I have a simple illustration in CorelDraw with overlapping simi-transparent curves with uniform fillings, and I need to export it to EPS while maintaining everything in vector form. It is perfectly ...
3
votes
3answers
2k views

Fill an area while keeping transparency

In Paint.NET I'd like to change the color of an icon by using the fill tool, but I want to preserve the alpha-channel of the pixels. There's the same question for Photoshop, but I can't find a ...
3
votes
3answers
265 views

What to avoid when using negative shapes / text for logos expected to be placed on a glass door

I'm not a designer (as is probably obvious from the vague question), but I'm being asked to design the signage that will go on the front of our offices. Our logo is deliberately simple, blocky white ...
3
votes
2answers
2k views

Photoshop - Extracting a transparent shadow from an image

I have a layer that contains a brushed metal texture. The layer has an inner shadow effect. I'd like to extract just that shadow with transparency, so I can later superpose the pure background ...
3
votes
3answers
2k views

Formula for finding out the result of a color after applying x% opacity to it?

I have 2 colors #a1a2a4 black (#000000) white (#ffffff) Now I need to know how much opacity (in a percent) must I apply to the second color (black) against a background of the third color (white) ...
3
votes
2answers
476 views

Size and transparency differences when saving PNG by different methods

I'm exporting PSD layers to PNGs for a game's texture atlases. When I'm doing Copy -> New File (RGB 8-bit) -> Save As PNG, the resulting PNG is quite heavy and Finder shows white background ...
3
votes
2answers
290 views

Creating see-through graphics for window decals in Photoshop

I would like to create transparent graphics for window decals using Photoshop CS6. The graphics should remain transparent after being printed on foil. By transparent I mean see-through, e.g. a set of ...
3
votes
1answer
5k views

Photoshop - turn white transparent, specifically preserving shadows - new issue

I have read articles all over the internet today. While some questions and answers are similar to my issue, none precisely cover my problem. I am currently doing CAD work for a website where my ...
3
votes
2answers
558 views

Separating a stock photograph from background

I purchased some stock images for a website I'm building (I'm a programmer, with relatively no design experience at all). The issue at hand is, like most stock images, the images I purchased are on ...
3
votes
1answer
117 views

How to determine transparency level of a pixel in Fireworks

I am a moderate user of Photoshop and have never really used Fireworks. I have been given a Fireworks document which I need to modify. The document has just one layer, the background layer. On it ...
3
votes
1answer
2k views

“Punch” transparent hole in inkscape, without destructive boolean operations?

I have a black rectangle, and I want it to look like a stencil, with "cut-out" text in the centre. In this image, I have converted both objects to paths and used the boolean difference tool: (I'm ...
2
votes
3answers
430 views

Turn semitransparent PNG image into a white silhouette, preserving transparency

I have an PNG image like this with a transparent background: How can I change the image color to white, and keep the transparent background in GIMP? The desired result is a white silhouette on a ...
2
votes
2answers
1k views

How to make a transparent image a non transparent one?

I am a newbie to Photoshop and I have a PSD file that contains a transparent button. Now I want to duplicate that button and move it to somewhere else. When I moved it I realized that the button is ...
2
votes
2answers
382 views

Photoshop: How to use a non-white background as the basis for semitransparent layers in PNG8 export?

PNG8 is a great compressed format when we don't really need semi-transparency. Often an asset will have semi-transparency data that we're happy to lose in the export process, however Photoshop ...
2
votes
1answer
547 views

is PNG-24 being converted to PNG-32 in Photoshop?

when i save an image in Photoshop as a PNG-24 with trans on, does PS actually convert that to PNG-32 but not tell me about it?
2
votes
1answer
90 views

How to punch through all the layers in Adobe Illustrator?

So I have this image as vector and a grunge image as vector: I can easily mask the grunge part from the image in Photoshop: But when I try to do this on Illustrator with pathfinder always get ...
2
votes
2answers
410 views

How do I handle thumbnails of white-on-transparent pngs in Bridge?

When handling multiple white-on-transparent png images, I am hindered by the fact that the thumbnails of these images are all-white. Both Adobe Bridge CS6 and Windows Explorer suffer the same problem, ...
2
votes
1answer
419 views

How to edit an animated gif in gimp to include transparency?

I have an ajax spinner which unfortunately has a white background in the corners. I want to remove the white and make it transparent using GIMP. How can I go about doing that? I tried opening it in ...
2
votes
1answer
1k views

Coloured background in illustrator that isn't included in export

I have an illustrator document with many artboards. Almost all the artwork is white and needs to be exported as (transparent) pngs. In order to see the artwork I have to put a large grey rectangle ...
2
votes
1answer
95 views

Nondestructive Gradient as Mask [duplicate]

I'm trying to create a mask with a nondestructive gradient. So far I have managed to create my shape in a smart object and the masking gradient in another smart object. My mask looks like this: My ...
2
votes
1answer
210 views

Is it possible to have a the magic eraser apply to ALL layers at once?

I have a gif of characters dancing on a white background, and I want to use the magic eraser (or an equivalent selection tool) to select and clear the white background to make it transparent. ...
2
votes
1answer
22 views

Layer blending settings that turns greyscale value into transparency (subtracting lower layers)

I have a photoshop file with many layers. I would like to put one layer on top where I can draw transparency, so that full white (or black) is rendered as 100% alpha, so it subtracts all the layers ...
2
votes
4answers
577 views

How to place a border around a picture with transparency in Photoshop?

I have an image I want to draw a 1px black border around. When I increase the canvas size the extra space will be transparent; I can't select a color here. Ordinarily I would increase the canvas by 2 ...