Image Quality Adjuster

Upload a photo, drag the JPEG quality slider, and watch both the preview and an estimated file size update live before you commit to a download.

What is the Image Quality Adjuster?

JPEG compression trades file size for fidelity, and finding the sweet spot usually means exporting a file, checking its size, and trying again. This tool skips that loop by re-encoding your image on the fly as you drag the slider and reporting the resulting file size immediately, so you can watch quality and size move together and stop exactly where the trade-off feels right.

Common Use Cases

• Hitting a strict upload size limit, like a form that rejects anything over 2 MB
• Finding the lowest quality that still looks acceptable before publishing a photo
• Comparing how much file size a small quality drop actually saves for a specific photo

How to Use the Image Quality Adjuster

1. Upload the photo you want to compress.
2. Drag the quality slider and watch the preview and estimated size update together.
3. Settle on a quality level once the balance between size and appearance looks right.
4. Click Download Adjusted Image to save the JPEG.

Frequently Asked Questions

Is the estimated file size exact?

It's the actual size of the JPEG your browser just encoded at that quality level, so it's an accurate reflection of what you'll get, not a rough guess.

Why does a PNG or transparent image look different after this?

JPEG doesn't support transparency, so any transparent areas are filled with white before compression — if you need to keep transparency, this isn't the right tool.

What quality level should I start with?

Somewhere around 75 to 85 percent is usually a good starting point for photos, since most people can't spot the difference from the original at that range, while file size drops noticeably.

Because the estimate updates as you drag rather than only after a full export, you can find your target size in seconds instead of several trial downloads.