Image optimization · Batch workflow

Batch image converter & compressor

Process a group of images with one output format and quality setting. See individual results and total size savings before downloading files.

Optimize multiple images

Files are decoded and exported locally in your browser.

Local processing
Batch summary
Choose images to begin
Your combined savings will appear after processing.

This tool downloads each converted file separately rather than creating a ZIP archive. Very large batches may use substantial memory; start with a smaller selection if your device slows down. PNG output ignores the quality slider.

When batch conversion helps

Batch processing is useful when a website, shop or content library contains many images that need a consistent output format. It can save repetitive work, but the best format depends on the source: WebP is often a good web choice, JPEG is broadly compatible for photographs, and PNG is useful for lossless graphics and transparency.

How to use it

  1. Select a manageable group of JPG, PNG or WebP files.
  2. Choose the output format and adjust quality for lossy formats.
  3. Run conversion and compare each output with its original size.
  4. Download the results you want to keep and visually inspect them before replacing originals.

Frequently asked questions

Will every image get smaller?

No. Re-encoding can make an already optimized file larger. The batch summary reports actual totals rather than promising a fixed saving.

Are my images uploaded?

No. The conversion uses browser image and canvas features. Your files are not sent to a Cliperfly server.

Why does PNG ignore quality?

PNG is a lossless format; the browser canvas encoder does not use the same lossy quality control that JPEG and WebP use.

Read the batch image workflow guide ↗