How to use Advanced Image Compressor
- 1Add one or more images, or paste one with Ctrl+V.
- 2Choose Compress by Quality, or Target file size and enter a limit such as 200 KB.
- 3Pick an output format (same as original, WebP, JPG or PNG) and an optional maximum width or height.
- 4Check the live preview: drag across it to compare, and read the new size and percent saved.
- 5Click Compress, then download each file or all of them as a ZIP.
Hitting an exact file size
Many upload forms ask for photos under a limit such as 50 KB, 100 KB or 1 MB. In Target file size mode the tool searches for the highest JPG or WebP quality that still fits under your limit. If even a low quality is too big, it scales the image down step by step until it fits. The result list shows the quality used and whether the image was resized.
PNG has no quality setting, so for PNG only the dimensions are reduced. For small targets, JPG or WebP will look much better.
Choosing a format
- WebP usually gives the smallest file at the same visual quality and supports transparency. All current browsers can open it.
- JPG works everywhere, including older software and most upload forms. Transparent areas are filled with the background color you choose.
- PNG is lossless and keeps transparency. In quality mode, lowering the slider reduces the number of colors to shrink the file.
Good to know
Resizing large photos is often the biggest win: a 4000 pixel wide photo shown on a website at 1600 pixels can be several times smaller after resizing. Output files are re-encoded, which removes EXIF metadata such as GPS location. Very large batches use more memory, so on phones it is best to work in smaller groups.
Frequently asked questions
How do I compress a photo to under 100 KB?
Choose Target file size, enter 100 KB (or click the 100 KB button), and keep JPG or WebP as the format. The preview shows the final size before you download.
What if the target size cannot be reached?
The tool lowers the quality and then the dimensions. If the image still cannot fit, it gives you the smallest version it could make and labels it so you know.
Is WebP better than JPG?
WebP files are usually 25 to 35 percent smaller than JPG at similar quality. Use JPG if the place you upload to does not accept WebP.
Are my images uploaded?
No. Compression, conversion and resizing all run in your browser, and the files stay on your device.
What is the difference from Compress Image?
Compress Image is one-click with three levels and keeps the format and size. This tool adds target size, format conversion, resizing and a live preview.