Crunch your files,
not your time.

Yes. Krunkit is free with no hidden fees, no watermarks, and no sign-up required. Processing happens in your browser, with practical limits such as up to 10 files per batch and file-size limits designed to keep the tools reliable on typical devices.

For the core image operation, Krunkit processes selected files in your browser using WebAssembly and related browser technologies. Krunkit does not upload selected image files to our servers for compression, conversion, resizing, or background removal. The site can still load normal web resources such as app scripts, analytics, ads, and model files described in the Privacy Policy.

Krunkit supports JPEG, PNG, WebP, and AVIF — the four major web image formats. You can compress, convert between any of them, and resize to any dimension or social media preset.

Compression results vary by image content, format, browser, and quality settings. Some images shrink a lot, while already-optimized or very small files may not get smaller. When Krunkit cannot create a smaller output, it clearly tells you to keep the original.

Yes. Krunkit is fully responsive and works on iOS and Android browsers. WebAssembly is supported on all modern mobile browsers.

Yes. All three tools — Compress, Convert, and Resize — support batch processing for up to 10 images at once. You can also paste images directly from your clipboard. When your batch is done, download files individually or as a single ZIP.

Just copy an image (or take a screenshot) and press Ctrl+V (Cmd+V on Mac) anywhere on a tool page. Krunkit will detect the pasted image and start processing automatically.