About the Image Compressor & Converter
Compresses and converts JPG, PNG, WebP and AVIF images entirely in your browser. Converting to WebP typically saves 25-40% over JPG at the same visual quality, and resizing to the width you actually display saves far more than that. You can also name a target file size - either 'under 50 KB' or exactly 50 KB, which is what application forms and government portals usually ask for - and resize to a maximum width and height, or to an exact pixel size such as 1080 × 1080 or 600 × 600.
Reduce image size without losing quality
Most of a photo's file size is detail your eye does not notice. At 80% quality - the default here - a JPG or WebP usually looks the same as the original at a fraction of the size. Two things save more than any quality setting: a smaller pixel size (a 4000-pixel phone photo shown 1200 pixels wide on a website is mostly wasted bytes) and a modern format. WebP is typically much smaller than JPG at the same visual quality, and AVIF smaller again, though it takes longer to encode.
Compress to a size in KB
Upload forms often set a limit - 100 KB for a photo, 200 KB for a signature, 1 MB for a document scan. Set Target file size to Under a size, type the limit, and the tool picks the quality for you, shrinking the dimensions too if quality alone is not enough. If a file cannot reach the target, it says so instead of quietly handing back a bigger file. Some forms also set a minimum; Exactly this size pads a JPG or PNG to the exact number of KB. The common limits have their own pages: 100 KB, 200 KB, 500 KB and 1 MB.
Which format should I choose?
- WebP - the best default for websites and anything you upload; every current browser shows it.
- JPG - when a form or an older program only accepts .jpg. Transparent areas turn white, because JPG has no transparency.
- PNG - lossless, so the quality slider does nothing. Right for screenshots and logos, but photos as PNG are large.
- AVIF - the smallest files, for websites whose visitors use current browsers.
Resizing for social media and forms
Keep proportions shrinks a photo to a maximum width or height and never stretches it. Exact size makes every image the same dimensions, with presets for an Instagram square (1080 × 1080) or portrait (1080 × 1350), a 1200 × 630 share card, a YouTube thumbnail and a 600 × 600 US passport photo; choose whether to crop to fill or fit the whole photo inside with bars.
You can drop in many images at once - JPG, PNG, WebP, AVIF or iPhone HEIC - and download them all as a ZIP. They are compressed in your browser and never uploaded. To change format without resizing, the image converter has pages for each pair, such as HEIC to JPG; to cut a product out of its backdrop first, use the background remover.
