Image Compressor
Compress Image to 1MB Online
"Maximum 1MB" is the default answer on a huge share of the internet — CMS editors, SaaS signup forms, helpdesk portals, and email attachments. CompressIO compresses any image to exactly 1MB with near-original clarity, right in your browser.
Open the Image Compressor →
Free · No sign-up · 100% private — works entirely in your browser
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The most common upload cap across the web — one tool covers them all.
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Photo-heavy images keep near-original quality at this size.
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Works for JPEG, PNG, and WebP; batch uploads supported.
Frequently asked questions
Will a 1MB compressed photo look different from the original?+
Barely. At 1MB, most photos keep virtually all visible detail — the difference is usually impossible to spot on screen.
Is there a file size limit for the original?+
Large originals work too; bigger files simply take a few extra seconds to process on your device.