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Compress PNG for Email
PNG attachments are often 2-5MB — slow to send and quick to hit provider limits. Compress your PNG for email: lossless when quality matters, JPEG conversion when size does. All in your browser.
Last updated: August 7, 2026
Why Choose Image Toolkit
Lossless Option Available
Keep PNG quality for logos and graphics; convert photos to JPEG for maximum savings.
Stay Under Limits
Many providers cap messages at 10MB — compressed attachments leave room for more.
How to Use
- 1
Upload an image
Click the upload area or drag & drop a JPG/PNG image onto the page.
- 2
Choose compression quality
High quality (near-lossless), Balanced (best for web), or Maximum compression (smallest size).
- 3
Download the result
Compare the file size and savings percentage, then download with one click.
Emailing a 4MB PNG screenshot is painful for everyone: slow to send, slow to open, and it devours your attachment allowance. A quick compression fixes all three.
How to compress PNGs for email
- Upload your PNG.
- Use Balanced (lossless) for logos and graphics; Maximum for photos that can convert to JPEG.
- Download and attach the optimized file.
When smaller PNG attachments matter
- Work emails — screenshots shared with teams and clients.
- Newsletters — images embedded or attached must stay light.
- Personal photos — PNG exports from phones compress dramatically.
A concrete example
A 3.6MB screenshot of a dashboard is a sluggish attachment. Lossless re-encoding brings it to ~2.2MB; converting it to JPEG on Maximum drops it to ~400KB — eight times lighter, and the email sends in a blink.
Privacy as standard
Your attachments are processed locally in your browser. No upload, no account, no watermark.
Frequently Asked Questions
Why are my PNG email attachments so large?
PNG stores full color data plus metadata. Screenshots and design exports routinely hit 2-5MB, which slows sending and eats attachment limits.
Should I compress PNGs losslessly for email?
For logos and graphics, yes — lossless mode keeps quality perfect. For photos, Maximum mode converts non-transparent PNGs to JPEG for far smaller files.
What's the best size for email attachments?
Under 1MB per image is comfortable; 300-800KB is ideal for most emails. Keep the whole message under 10MB to avoid provider rejection.
Can I compress a batch of PNG attachments?
Yes — Batch mode compresses up to 10 images at once with consistent settings.
Is it safe to send my images through this tool?
Nothing is uploaded — compression happens locally in your browser, so your attachments never leave your device.