Adjust Image: Brightness, Contrast, Saturation and Transparency
Fix the brightness, contrast, saturation and transparency of your photos with seven controls and ready-made looks. Apply to several images at once, all in your browser.
How to adjust brightness, contrast, saturation and transparency
To get started, drag your images onto the upload area at the top of the tool, or click it to open your computer's file picker. You can grab several photos in one go by holding Ctrl (or Cmd on a Mac) as you click, and you can drop a whole folder of images at once. JPG, PNG, WEBP, GIF and BMP are all accepted. As soon as the files are read, the workspace appears with the controls on the left and the preview on the right. Load more than one image and tabs named after each file show up above the preview — click any of them to see how your settings look on that particular photo.
The quickest route is to start from a quick look. There are eight ready-made combinations — Vivid, Soft, High contrast, Faded, Cool, Warm and Black & white, plus Original to get back to where you began. Click one and every control jumps to the values behind that style. From there you can fine-tune by hand: the sliders stay live after a look is applied. To compare your result against the untouched photo, press and hold the mouse button over the preview (or your finger, on mobile) — the image snaps back to its raw state while you hold and returns to your edit the moment you let go.
The individual controls cover seven parameters. Brightness lightens or darkens the whole image. Contrast separates light tones from dark ones, and it is the single adjustment that rescues the most flat-looking photos. Saturation sets how intense the colors are: at zero the image turns grayscale. Transparency runs on a direct scale — 0% keeps the image solid and higher values make it translucent, which is handy for backgrounds, overlays and subtle watermarks. Hue rotates the entire color wheel, letting you shift the temperature of a shot. Sepia adds the classic aged tone. Next to each label sits a "reset" button that returns just that one control to its default without touching the others.
Once you are happy, pick a download format: PNG preserves transparency and loses no quality, JPG gives you the smallest file, and WEBP balances the two. Choosing JPG or WEBP reveals a quality slider — 90% is a safe default for the web. Use "Download image" to save only the photo showing in the preview, or "Download all (.zip)" to get the entire batch compressed into a single archive, with the same settings applied across every file.