|
Help |
|
|
Help |
Why can't I see or edit my image?
Please make sure your image is in JPEG format. Sometimes PixieLab cannot open your image through its URL because of firewalls. Try downloading your image from the original website and then uploading it to PixieLab.
What is the difference between PixieLab and Adobe Photoshop?
If you have Photoshop, use it. If you only have Mozilla, use PixieLab.
What is the difference between PixieLab and GIMP?
See Photoshop answer above.
Does PixieLab support Microsoft Internet Explorer?
MSIE6 does not support PixieLab.
Why do lines become blurry after rotating my image?
What is the histogram?
Why is PixieLab's histogram different from Photoshop's?
Can I undo the histogram/levels control?
Why don't I see many blue shades in the color grid?
Why is the color grid sometimes wrong?
Can I undo the color-grid control?
Is PixieLab open source?
Who is PixieLab?
Each time you rotate the image, the image becomes slightly less sharp because the anti-aliasing algorithm averages neighboring pixels to smooth the lines and edges. However blurring in the final full size image that you download will be less noticeable. If blurring on the screen becomes unbearable due to multiple rotations, please start over.
The histogram counts the number of pixels in 50 different luminance (brightness or intensity) ranges. Luminance increases from left to right.
We use standard sRGB luminance to compute the histogram. We do not know what Photoshop does.
Unfortunately, not in this demo.
All colors in each row of the grid have the same luminance. Blue range is relatively compressed because it contributes less than 10% to luminance.
Mozilla does not perform perfect arithmetic. Sometimes it ends up with negative color levels, and displays them arbitrarily.
Usually you can reverse the effect by using the color-grid again and picking the opposite color. For example, you can roughly cancel "more blue" with "less blue" or "more yellow".
We retain copyright over the source code. We may enforce the copyright should you try to find and decode our software.
Phil Liao created PixieLab; he takes photos and plays ultimate frisbee.