Smaller files, handled in your browser.

Three useful changes in one batch

Compression reduces the bytes used to store an image. Resizing lowers its pixel dimensions. Conversion changes the file format. You can keep the original format and dimensions, or combine these controls for up to 20 images at once.

A visible result before download

Each completed item shows its original and output dimensions, file sizes, savings, and format. A before-and-after view helps you inspect visual quality instead of trusting a percentage alone.

Care around orientation, transparency, and metadata

Re-encoded images apply embedded orientation before processing and remove metadata from the result. Converting transparency to JPEG requires a background color, so transparent pixels are never silently replaced with an accidental color.

Local processing has a clear boundary

The tool performs image work in this browser tab. It does not create an account, send source files to an application API, or remember your image queue. Read the exact storage and hosting boundary in the privacy policy.

Who maintains this site

MallowDesk is an independent collection of browser tools, maintained by its developer. The support address is gensio.support@gmail.com. This inbox is shared with Gensio; MallowDesk requests are handled separately.

Our reproducible image examples publish the source files, output files, settings, and measurement environment. We test file decoding, orientation, transparency, cancellation, and downloads in Chromium, Firefox, and WebKit. These checks do not guarantee an identical appearance in every viewer.

For a correction, send the page address and the problem through Contact. Please do not email sensitive original images; describe the format, dimensions, browser, and steps first.

Part of MallowDesk

Mallow Image Compressor is part of MallowDesk, a collection of focused browser tools. When another small job comes up, browse all MallowDesk tools. Source images, results, and settings are not attached to that link.