Free Online Utilities "HaruTools Lab"

Adjust Image Brightness & Contrast

Simply move the sliders to correct the brightness and clarity of your photos.

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Drag & drop images here, or click to upload
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*Adjustments are reflected in the preview in real-time.

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Features of the Brightness & Contrast Tool

This tool allows you to correct photos that have become dark due to backlighting or images that appear dull in seconds. You can complete your edits intuitively on your browser without launching dedicated software.

Adjustment Tips

Frequently Asked Questions

Q. Does the image quality degrade after editing?

A. We use browser rendering (Canvas) for previewing and saving. Images are exported in high-quality PNG format, minimizing noticeable degradation from editing.

Q. Can I apply the same settings to multiple images at once?

A. Yes. When you upload multiple images, the slider settings are applied to all images simultaneously. This is convenient for correcting multiple photos taken under the same lighting.

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