How to compress an image

Choose compression before or after adding images

The three primary choices stay visible: Compress, Resize and Convert. You can start by selecting Compress, or add an image on the home page and then choose the task. More tools contains the other image utilities.

Switching between these three primary tasks keeps the original files in the tab and starts fresh results for the chosen task. It does not use an already compressed result as the new source. A hard reload clears this temporary selection, so download any result you want to keep.

Compress a JPG, PNG or WebP in three steps

PixMinto processes images in the browser. Use the sample first to see the controls without selecting a personal photo.

1. 1

   Choose up to five JPG, PNG or WebP images. Each file must be at most 15 MiB and 40 megapixels.

2. 2

   Use Auto for a size comparison, or choose an output format deliberately. Adjust quality for JPG or WebP, then process the images.

3. 3

   Compare the original and result sizes. Open the downloaded copy and check text, faces and fine detail before sharing it.

Choose Auto or an explicit format

Auto compares the source format with a WebP candidate. When a smaller result is not found, the compressor can keep the original rather than re-encode it into a larger file. That is a valid result for an already optimized image.

Choose an explicit format when the destination requires it. JPG has no transparency, so PixMinto fills transparent areas with white. PNG keeps transparency and uses lossless encoding, but can be much larger for photographs. An explicit format change can produce a larger file.

Reduce bytes while checking image quality

The quality control affects lossy JPG and WebP output. A lower value can remove fine detail; a higher value is not a guarantee of the original appearance. PNG does not use this lossy quality setting.

For a document scan, inspect small lettering. For a photograph, inspect faces, edges and smooth gradients. A file that meets an upload limit but becomes unreadable is not a useful result.

When to resize instead of lowering quality again

If the destination only displays a small picture, fewer pixels may be more useful than another quality reduction. The resize tool lets you set a maximum width while preserving the aspect ratio. It never enlarges a smaller source.

Resizing and compression solve different constraints. First check whether the destination sets a pixel limit, a byte limit or both. Use the 100 KB preset when the requirement is specifically at most 100,000 bytes.

Keep the source and verify the result

A compressed copy is intended for the current upload or recipient. Keep your source for future edits. Repeatedly saving a lossy JPG or WebP can introduce additional changes.

Processing stays on your device. Newly encoded outputs do not copy source EXIF or GPS; a file kept unchanged retains its original bytes and metadata. Review the file you actually plan to share.