Image Contrast Adjuster
Increase or reduce image contrast using PHP GD and return a PNG copy.
About Image Contrast Adjuster
Increase or reduce image contrast using PHP GD and return a PNG copy.
How to use Image Contrast Adjuster
Upload a supported image, adjust the available settings for Image Contrast Adjuster, then run the tool. Processing is performed with PHP GD and the original local file remains unchanged.
When Image Contrast Adjuster is useful
- Create a quick visual derivative for publishing or review.
- Apply a focused image transformation without installing an editor.
- Standardize a small asset before using it in another workflow.
Practical tips
- Work from the highest-quality source available.
- Keep the original if you may want to undo the effect later.
- Very large images use more server memory during processing.
Image Contrast Adjuster FAQ
What formats can I use with Image Contrast Adjuster?
JPEG, PNG, WebP, GIF and BMP are accepted when the server GD build supports decoding that format.
Does ToolFlow replace my original image?
No. A separate result is created.
Privacy and file handling
Uploaded files are processed in temporary server storage. ToolFlow attempts to delete temporary source and output files after processing or delivery. Do not upload material you are not authorized to process. See the Privatnost for details.