About the Brightness & Contrast
Brightness & Contrast is a free online edit tool from Convertify. Adjust brightness, contrast and saturation of any image online. Simply upload your file, fine-tune the settings, and download your finished result in seconds — directly from your browser, with no software to install and no account to create.
How to use the Brightness & Contrast
- Click the upload box and choose your file, or simply drag and drop it in.
- Adjust the available options to match what you need.
- Click Process File and let Convertify do the work in seconds.
- Download your result instantly — no email, no account, no watermark.
Why use Convertify's Brightness & Contrast?
- Free forever — every tool on this site is free to use, with no hidden limits.
- Private by design — your file is processed for this request only and never stored on our servers.
- Fast — results are usually ready in a few seconds, even for larger files.
- No installation — works entirely in your browser, on desktop or mobile.
Frequently Asked Questions
Can I adjust saturation too, not just brightness and contrast?
Yes — all three adjustments (brightness, contrast and saturation) are available together so you can fine-tune the overall look in one pass.
Will these adjustments reduce image quality?
No — these are standard tonal adjustments rather than lossy recompression; any quality change comes only from your image’s normal save format, not from the edits themselves.
Can I preview changes before downloading?
The tool processes the adjustment and shows you the result, which you can re-adjust and reprocess as needed before downloading.
Does this work on PNG images with transparency?
Yes — transparency is preserved; only the color/tone values of the visible pixels are adjusted.
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