Compress oversized PDFs and photos under Gmail and Outlook's 25MB attachment limit. Fast, secure, client-side file compression with zero watermark.
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The Email Attachment Reducer compresses images so they fit under Gmail's 25MB or Outlook's 20MB attachment limits. No more bounced emails with 'attachment exceeds maximum size' errors.
Simply select your email provider preset, upload your images, and our smart compression engine will optimize them to fit under the cap while preserving visual quality. Download compressed files individually or as a ZIP.
100% browser-based — your private photos and documents are never uploaded to any server.
Follow these simple steps to achieve perfect results in seconds.
Select Gmail (25MB), Outlook (20MB), or another platform preset.
Drag and drop images that need to be reduced. Supports batch processing.
Compressed images are ready to attach to your email. Download individually or as ZIP.
Complement your work with these related utilities on Toolsgn.online:
We never permanently store your files or harvest personal data. All mathematical formulas, image processors, and document tools run directly on your browser or in isolated volatile memory workers.
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