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Compress an Image for Gmail

Get your photos comfortably under Gmail’s 25 MB attachment limit, in your browser.

No upload Free forever No signup

Drag & drop images, or browse

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

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

Quick answer

To compress an image for Gmail, upload it above. FitToKB shrinks it to fit 25 MB per email without going over, entirely in your browser. Free, no signup, nothing uploaded.

Gmail rejects emails whose attachments total more than 25 MB (it offers Google Drive links instead). Compressing each image keeps the whole email well under the cap.

Compress for Email Compress to 2 MB

Frequently asked questions

What size should an image be for Gmail?
Gmail rejects emails whose attachments total more than 25 MB (it offers Google Drive links instead). Compressing each image keeps the whole email well under the cap. The limit is 25 MB per email.
How do I compress an image for Gmail for free?
Upload it to the tool above and download — FitToKB sizes it for Gmail 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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Reduce JPG/JPEG photos to an exact KB target without visible loss.

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HEIC to JPG

Convert iPhone HEIC/HEIF photos to JPG — and resize to a size limit.

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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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