Reduce photo size before attaching files to a message.
Exact size image compressor
Compress images for email attachments
Make photos easier to send by email. Start with a 1MB target per image, or enter the exact attachment size you need.
Compress image to 1 MB →Prepare a small batch of photos for one email without processing them one by one.
Keep enough detail for everyday images while avoiding needlessly heavy attachments.
How to compress an image to 1 MB
Start with 1MB per image for everyday photo sharing. If you are sending several images, choose a lower target for each file so the full email stays manageable. TargetKB optimizes each image locally in your browser and preserves its aspect ratio.
- Open the TargetKB compressor with the 1 MB limit already selected.
- Upload one image or up to 10 images at once.
- Download the optimized image and check its dimensions and file size before uploading.
Read the full guide: how to compress images for email
Why use an exact-size compressor?
Many upload forms reject files for being only slightly too large. TargetKB works backwards from your requested limit, automatically balancing image dimensions and JPEG quality instead of asking you to guess a quality percentage.
Check byte limits, output quality and format limitations if your upload is still rejected.
Frequently asked questions
What image size should I use for email?
About 500KB to 1MB per everyday photo is a useful starting range. For several attachments, use a lower target for each image and check your email provider’s total attachment limit.
Can I compress multiple images for one email?
Yes. Upload up to 10 images, then download each optimized file before attaching them to your message.
Will compressing an image make it look blurry?
TargetKB searches for the clearest JPG result that fits your chosen file-size limit. Start with a sensible target and lower it only when you need a smaller attachment.