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Compress an Image for Email

Shrink a photo so it sends fast and never bounces — most mail providers cap attachments at 20–25 MB.

No upload Free forever No signup

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JPG · PNG · WebP · HEIC · HEIF — processed privately in your browser

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Quick targets:

Your compressed images appear here. Nothing is uploaded — everything runs on your device.

Quick answer

To compress an image for Email, upload it above. FitToKB shrinks it to fit 20–25 MB (Gmail 25 MB, Outlook 20 MB) without going over, entirely in your browser. Free, no signup, nothing uploaded.

Large camera photos can be 5–15 MB each, so a few will blow past an email size limit or clog the recipient’s inbox. Compressing to a few MB (or less) keeps quality high while sending instantly.

Compress to 1 MB Compress for Gmail

Frequently asked questions

What size should an image be for Email?
Large camera photos can be 5–15 MB each, so a few will blow past an email size limit or clog the recipient’s inbox. Compressing to a few MB (or less) keeps quality high while sending instantly. The limit is 20–25 MB (Gmail 25 MB, Outlook 20 MB).
How do I compress an image for Email for free?
Upload it to the tool above and download — FitToKB sizes it for Email automatically, free and in your browser, with nothing uploaded.
Is my image uploaded to a server?
No. All resizing and compression run in your browser. Your image never leaves your device.

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More free, private image tools from FitToKB.

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HEIC to JPG

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PNG to JPG

Convert PNG to JPG with a white background and optional size cap.

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JPG to WebP

Modern WebP output for the smallest files at the same quality.

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Compress your first image now

Free forever. No signup, no watermark, no upload. Everything runs on your device.

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