Compress image to 1 MB

One megabyte is enough for a full-resolution phone photo at high quality. It is the upper end of the range we recommend for Instagram, and the most common cap on form builders, CMS uploads and classified ad sites. When a photo is already under 1 MB the tool re-encodes it at the best quality that fits, so nothing is lost.

At 1 MB you can expect full phone resolution for most photos, about 2000 to 2500 px. The exact number depends on how much fine detail the image has: skies and plain walls compress well, foliage and fabric don't.

1. Drop or paste the image. Nothing is uploaded; the work happens in your browser, even offline.
2. The tool encodes the image as JPEG at several quality levels and keeps the one that lands just under 1 MB.
3. If even the lowest acceptable quality is too big, it reduces the pixels a little and tries again, so the result is the largest image that fits.
4. Download the file, or share it straight into WhatsApp or the form on a phone.

Every result shows the final size and pixel dimensions before you download. Need a fixed pixel size too? Set Resize to Exact size (crop) and type the width and height.

This limit is common for Instagram uploads, web hero images, Google Forms and any site with a 1 MB limit. If the portal also lists a minimum size (for example "20 KB to 50 KB"), open More options and fill in Min (KB): the tool pads the JPEG so it is never rejected for being too small, without touching the pixels.