Compress your images
right in your browser.
or drop your files here
Max file size 100 MB
- No signup needed
- Private & encrypted
- 256-bit SSL
- AES-256 encrypted
- SOC 2 Type II
Compress in 3 easy steps
Upload your image
Upload the JPG, PNG, or WebP image you want to shrink down.
Pick a compression level
Choose how much to compress, we keep your image crisp and clear.
Download or share
Download your smaller image or share it directly with others.
One place for every PDF task
Every tool you need to edit, convert, sign, and manage your PDF documents.
The image compressor people
actually rely on
Powerful compression, zero quality loss. Everything you need to shrink images online.
Dramatically smaller files
Up to 90% smaller
Cut image size for web, email, and storage without the hassle of desktop software.
No visible quality loss
Sharp and clear
Smart compression preserves detail and color so your image still looks great.
JPG, PNG & WebP
Every common format
Compress the formats you actually use, and keep transparency where it matters.
Compression levels
You stay in control
Pick low, medium, or high compression to balance file size against quality for your needs.
Private and secure
AES encrypted
Your files are encrypted in transit and processed securely. We never share your images.
Works in your browser
Any device, no install
Compress images on desktop, tablet, or phone, nothing to download or install.
Trusted every day,
by people like you
See what people are saying about compressing images with lumr.
TrustScore 4.6 · Based on 3,247 reviews
“Our site images were killing load times. lumr shrinks them in seconds and they still look pixel-perfect.”
Sarah M.
Marketing Manager
“I batch-compress client photos before delivery. Huge files become email-friendly without losing detail.”
James K.
Freelance Designer
“Listing photos used to be too big to upload. Now I compress them on my phone between showings.”
Ana L.
Real Estate Agent
We answer
your questions
Everything you need to know about compressing images online.
Our smart compression preserves detail and color, for most images the difference is invisible. Choose a lower compression level if you need maximum fidelity.
You can compress JPG, PNG, and WebP images. PNG and WebP transparency is preserved where the format supports it.
Absolutely. Your files are encrypted with AES during transfer and processed securely. We follow GDPR best practices and never share your images with third parties.
It depends on the image, photos often shrink by 70-90%, while already-optimized images compress less. You will see the new size before downloading.
You can upload images up to 100 MB. For most photos this is more than enough.
Security you can trust
Independently audited and compliant with the security and privacy standards your documents demand.
- SOC 2 Type II
- GDPR
- ISO 27001
- HIPAA
- eIDAS
- PCI DSS
Ready to shrink your image?
Join millions of users who trust lumr for fast, high-quality image compression. No fees, no hassle.
- Ready in 3 seconds
- 256-bit SSL secure
- Works on any device