Question 1

Does this tool upload my images to a server?

Accepted Answer

No. All compression processing happens locally in your browser using client-side JavaScript. Your images never leave your device, which also means the tool works offline after the page loads.

Question 2

What is the difference between lossless and lossy compression?

Accepted Answer

Lossless compression removes redundant encoding data without changing any pixel values — the image is mathematically identical to the original. Lossy compression applies perceptual algorithms that reduce colour data in ways the human eye is least likely to notice, achieving higher compression ratios at the cost of minor detail reduction.

Question 3

Will compression change my image dimensions or aspect ratio?

Accepted Answer

No. This tool compresses file size only. Your image width, height, and aspect ratio remain exactly as they were in the original file.

Question 4

What file formats are supported?

Accepted Answer

JPG, PNG, WebP, and GIF. For format conversion — such as converting a PNG to WebP — use the Image Converter tool.

Question 5

What quality setting should I use for web images?

Accepted Answer

For photographs in blog posts or hero sections, 75–82 typically produces excellent results. For product images where detail matters commercially, 85–90 is a safer range. For UI elements and icons, use lossless mode.

Question 6

How much file size reduction can I expect?

Accepted Answer

Typical reductions range from 30–70%. A 1.2MB PNG can often be reduced to under 400KB with no visible quality change. Process additional batches in a second pass if you need more than twenty files at once.

Image Compressor

Image Resizer

Image Converter

Word Counter

Image Compressor

You may also like

Image Resizer

Image Converter

Word Counter