Compress an image to 1 MB Shrink large phone or camera photos under 1 MB for upload limits on forms, marketplaces, websites and messaging apps, keeping as much detail as possible. Your image stays on your device.
FAQ How is 1 MB measured? The default ceiling is 1024 KB (1,048,576 bytes); set 976 KB if your form means 1,000,000 bytes.
Will dimensions stay the same? Quality is reduced first, then dimensions shrink only if needed, so most photos keep full resolution under 1 MB.
Can I convert HEIC photos? Yes, iPhone HEIC photos are decoded in your browser and saved as JPG under the limit.
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