Email Attachment Image Compressor

Email Attachment Image Compressor reduces photo and graphic file sizes before you attach them to an email. Drop one or multiple images into the browser-based tool, choose a maximum dimension and output quality, then compare original and compressed sizes before downloading your optimized files.

Large attachments can slow sending and receiving, take up mailbox space, and be inconvenient on mobile connections. This tool lets you resize and convert common image formats locally, so your personal or customer images never leave your device. It is especially useful for sending photos, product images, screenshots, and documents by email.

• 100% browser-based compression: Images remain on your device; no server upload or account is required.
• Batch processing: Add multiple JPEG, PNG, WebP, GIF, or BMP image files and apply a consistent profile.
• Quality control: Use a visual quality slider to balance file size against image fidelity.
• Smart resizing: Set a maximum long-edge dimension while preserving original aspect ratio.
• Output format choice: Keep the source format where possible or convert to JPEG or WebP.
• Transparent PNG support: Choose a background color when flattening transparent images into JPEG.
• Before-and-after comparison: Review dimensions, file sizes, percentage saved, and a thumbnail for every result.
• Download controls: Download an individual image or package all optimized files as a ZIP.

1. Add your images by dragging them onto the upload area or selecting files from your device.
2. Choose an output format. JPEG is usually best for photos and broad email compatibility; preserve PNG for transparency-sensitive graphics.
3. Set maximum dimensions and quality. Start around 1600 pixels and 80% quality for typical email attachments.
4. Click Compress Images and compare the original and optimized size for each file.
5. Download the results, using individual downloads or the ZIP button for a batch.
6. Attach the optimized images to your email and keep the original files separately if needed.

Example 1: Sharing phone photos. Five 12 MP PNG screenshots and photos totaling 24 MB are resized to 1600 pixels and converted to JPEG at 80% quality, reducing the attachment set to about 3.5 MB while remaining clear on screen.

Example 2: Sending a logo. A transparent PNG logo should stay PNG so its transparent background is preserved. Resize it only if it is much larger than the recipient needs.

Example 3: Product proofing. A designer processes ten large product photos at 2000 pixels and 85% JPEG quality, then sends the ZIP of optimized files to a client who needs fast previews rather than print originals.

• Send faster: Smaller attachments upload and download more comfortably, especially on mobile or slower connections.
• Stay within limits: Reduce the chance your total message exceeds attachment limits imposed by email providers.
• Save mailbox space: Lighter files are easier for recipients to store and forward.
• Protect privacy: Compression runs locally, so sensitive images do not need to be uploaded to an external service.
• Control the tradeoff: Preview exact size savings and tune quality or dimensions to fit your use case.