Compress Images With Lumr and Share Your
Files Faster
Reduce large image files quickly with Lumr’s online image compressor. Upload your picture, compress it, and download a smaller file that is easier to share, store, or upload.
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
How to Compress an Image in 3 Easy Steps With Lumr
Upload your image
Select or drag and drop the image you want to compress.
Compress the image file
Use Lumr’s image compressor to reduce the file size while maintaining a practical balance between compression and visual quality.
Download your compressed image
Download the optimized image to your device and use it on websites, in email attachments, on online forms, in presentations, or on social media.
Compress Image Files Online for Easier Sharing and
Faster Workflows
Lumr makes it simple to compress images online without installing additional software. Reduce oversized pictures and prepare them for everyday digital tasks from one convenient workspace.
Reduce large image files
Smaller files, simpler sharing
Use the image file compressor to make large photos and graphics easier to send by email, upload to online platforms, or add to documents.
Maintain clear visual quality
Keep the details that matter
Lumr is designed to compress images without losing quality so that your pictures remain clear and usable after compression. Results may vary depending on the original image and compression level.
Optimize images for online use
Better-sized images for digital projects
Compress image file size before adding pictures to websites, online stores, forms, newsletters, presentations, or social posts.
Save storage space
Make more room on your device
An image file size compressor can reduce the space used by large photos, screenshots, and graphics while keeping your files convenient to access.
Simple online compression
No technical skills needed
Upload, compress, and download your image through a clear process. Lumr’s online image compressor makes file optimization straightforward, even if you have never compressed an image before.
Works directly in your browser
Compress from different devices
Use the image size compressor on a desktop, laptop, tablet, or smartphone without downloading a dedicated application.
Why Users Choose Lumr Compress Image Tool for Better File Sharing
See how people use Lumr to compress image files for easier uploads, sharing, storage, and online publishing.
“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
FAQs About Our Online Image Compressor
Learn more about compressing images online with Lumr by reading the answers to the following FAQs.
Will compressing my images reduce the quality?
Most images keep their quality, although the final appearance may vary depending on the original image and the selected compression level.
Which image formats does the Lumr compression tool support?
You can use Lumr's online image compressor for JPG, PNG, and WebP image formats.
Does compressing a PNG destroy its transparent background?
Our tool will reduce file size while maintaining transparency and the original image structure whenever possible.
Is there a maximum file size limit for image uploads?
You can upload image files up to 100 MB to the Lumr online image compressor, which lets you compress large photos and other supported images.
Do I need to install desktop software to optimize my pictures?
You do not need to install any additional software to compress images online with Lumr. You can directly open the online image compressor in your browser and get started.
Is it safe to use the Lumr image compressor?
Lumr’s image compressor securely processes your images to help protect your files, and they are handled with privacy in mind throughout the entire process.
Can I compress images straight from an iPhone or Android?
Yes, you can use Lumr's online image compressor on iPhones, Android devices, tablets, laptops, and desktop computers. Since everything works in your browser, you can compress image files wherever you have an internet connection without installing an app.
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