Image Compressor

JPEG and WebP are lossy formats — they are built around discarding information. Compression redraws the image onto a canvas and re-encodes it in the same format at the quality you choose. Around quality 70 is the region where photographs lose a lot of weight without visibly losing anything.

Pixel dimensions are unchanged, so the image occupies the same space on screen. When a picture simply has far more pixels than it will ever be displayed at, resizing removes far more bytes per unit of visible quality than lowering the quality does.

PNG is lossless, so "lower the quality" is not an available operation. Instead the tool builds a palette of representative colours and maps every pixel to the nearest one. You can choose 64, 128, or 256 colours.

This works remarkably well on screenshots, logos, illustrations, and diagrams — images built from a limited set of colours shrink dramatically with no visible change. On smooth gradients or photographs stored as PNG, it can produce visible banding; in that case, convert to JPEG or WebP rather than fighting to keep PNG.

When the constraint is a hard ceiling like "under 2 MB", set a target size in kilobytes instead. The tool searches for a quality level that lands under it, so you are not nudging a slider and re-checking the file size by hand. For upload limits, this is the reliable path.

Because compression redraws through a canvas, the original EXIF — capture time, camera model, GPS coordinates — does not survive into the output. If dropping location data is all you wanted, that is enough on its own; if you did not want to compress, use the EXIF remover instead. Equally, be aware that compressing a photo whose capture date you wanted to keep will discard it.

ICC colour profiles are dropped for the same reason, so images authored in a wide colour space can shift slightly in appearance.

The tool compresses JPEG, PNG, and WebP. Formats the browser cannot decode directly, such as HEIC, need converting to JPEG first. Files are handled up to 50 MB each.

Drop in many images and they are compressed in sequence with identical settings, then returned as one ZIP. Preparing a batch of blog photos or a folder of screenshots becomes a single operation, and since the ZIP is assembled in the browser, nothing leaves your device no matter how many files you add.

When images are combined into a PDF, they are stored without re-compression — so the PDF weighs whatever the images weighed. Compressing first and then handing the results to image-to-PDF produces a submittable file in one pass.