Adjust image brightness and contrast with numeric controls.
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When to use Brightness & Contrast
Correct an image that is too dark or has weak separation between light and dark areas. Start with small adjustments to avoid clipping detail.
How to use this tool
- Choose an image
- Set brightness and contrast from -100 to 100
- Generate, preview and download the PNG
Before you use the result
Large changes can clip highlights or shadows. These global adjustments do not replace selective photo retouching.
Open the downloaded file or export before relying on it. Keep the original so you can compare quality, recover data or try different settings. Use only material you have permission to process.
Questions about Brightness & Contrast
What does a value of zero do?
Zero leaves that adjustment unchanged. Positive values increase it and negative values reduce it.
Where are my files or inputs processed?
Files, pasted text and CSV inputs for this tool are processed in your browser. The tool does not upload them to WebInMarketing. Clear the page when finished on a shared device.
What are the input limits?
File tools accept up to 25 MB per file and 60 MB per batch, with at most 20 files. PDF rendering is limited to 40 pages and 20 megapixels per page. Image output is limited to 20 megapixels. CSV tools accept up to 10 MB and 20,000 rows. Large jobs may need a desktop browser.