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Making Transparencies in LViewPro®
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The following instructions are for making transparent images using LViewPro® 2002, which supports GIF, JPG, BMP, PBM, and TIFF image formats. For whichever image you choose, you should make a copy and save it as "transpimagename.gif". If the image is already a gif, make sure that you change the name of the file. When making changes, it is always wise to keep the original image intact. Any changes should be made on the copy of the image. Try to use images that have single colour solid backgrounds that are similar in colour to the background of your page.
View screenshots of each step by clicking the eyeglasses () image.
- Select an image. Please, observe copyright rules. (For this demo, the image chosen was a BMP drawn on a white background.)
- Save as GIF. Open image in LViewPro2002. Go to File --> Save as. Type in the"filename; choose Gif 87a/89a from the drop down menu and hit the Save button. Close the file and reopen it again kn LViewPro2002.
- Delete unused colours. Go to Color --> Palette Operations --> Delete Envries. Select Unused Entries and hit the OK button. Save.
- Set background colour. Select the (perceived) background colour so that you will easily see that you have selected the correct colour for the transparency. Choose color --> background color. Select a colour from the drop down box and hit OK. (The background colour will not be seen once the image is on the web.) Save.
- Set the transparency. On toolbar, choose Color --> Palette operations --> Transparency. Check Layer uses transparency box. Scroll through transparent palette index of colours until the background colour changes to the selected (perceived) background colour. Save.
- Remove background noise. Save.
- And that's all there is to it. To admire your work, use the image in an html file with a colored background to see how well the edges blend. Note that if the original background colour on the image is markedly different, you may see a halo effect around the image.
© llizard 2003, 2004
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