Free MB to KB converter for images.

Drop the photo onto the tool. It compresses in your browser: the quality slider controls the size, and the readout shows the result in KB live before you download. A typical 4 MB phone photo lands anywhere from 800 KB (barely touched) to 50 KB (heavily compressed) depending on the setting.

Some, and that is the point: 1 MB is 1024 KB, so going from 4 MB to 200 KB means keeping about 5% of the bytes. JPEG and WebP spend those bytes smartly, so a photo compressed to a reasonable KB target still looks good on screens. The preview shows exactly what you will get before downloading.

1 MB = 1024 KB (in the binary convention most portals use; some marketing uses 1000). If a form says 'max 500 KB', a 2 MB photo is about four times too big and needs roughly 75% compression, which this tool handles easily.

Yes. For exact byte targets use our dedicated pages: compress to 20KB, 50KB, 100KB, 200KB, or 500KB. They auto-search quality and downscale as needed to land just under the target. This page gives you free manual control instead.

WebP is usually 20-30% smaller than JPEG at the same visual quality. But if you are uploading to a portal that lists accepted formats, JPEG is the safest choice; every uploader accepts it.

Yes. HEIC files are decoded in the browser first, then compressed. Output is JPEG or WebP at whatever KB size your settings produce.

Yes. No accounts, no daily caps, no watermark, no file size limit. Compression runs in your browser using canvas; the photo never uploads and we never see it.

Modern phone cameras shoot 12-48 megapixels and store them at high quality, easily 3-8 MB per photo. Portals, email attachments, and forms rarely need that: a 1600 px wide JPEG at 80% quality looks sharp on any screen and weighs a few hundred KB.

Browser re-encoding drops most EXIF by default, which many uploads actually prefer. If you need to inspect or strip metadata deliberately, use our EXIF viewer or EXIF remover; if you need the date visible after compression, stamp it on the photo first with the timestamp tool.

Yes, drop several files and each is compressed with the same settings, then download individually or as a ZIP. Handy for shrinking a whole folder of listing or claim photos before uploading.