Free Image Compressor for JPG, PNG & WebP
Compress image files online without changing your workflow. Slim Files helps reduce file size for websites, email, content publishing, and sharing while keeping output quality practical and predictable.
Drop files or click to upload
Max file size: 50MB. Supports image files.
Professional Grade
Metadata Stripping
EXIF and producer fields removed by default.
Auto-Cleanup
Files purged from disk within 1 hour.
Validated Inputs
Files checked by content, not by extension.
Direct API Access
Process higher volumes with plan-based limits, authenticated requests, and the same server-side validation used by the web app.
View PlansFiles purged from disk within 1 hour
How to use Image Compressor
Upload your image files (JPG, PNG, or WebP).
Adjust the compression quality slider to your preference.
Click the "Process" button to start optimization.
Download your optimized files individually or as a ZIP archive.
Best Use Cases
- Speeding up website load times
- Saving storage space on mobile devices
- Reducing email attachment sizes
- Preparing high-res photos for social media
Pro Tips
- "For web use, 70-80% quality is usually indistinguishable from 100%."
- "PNG files are best compressed if they contain solid colors or text."
- "WebP often provides the best compression-to-quality ratio for modern browsers."
Supported Formats
All transformation engines are optimized for high-fidelity output.
Frequently Asked Questions
Is my data safe?
Yes. All files are processed on demand and automatically deleted from our servers after 60 minutes. We do not use your data for training or tracking.
What is the maximum file size?
Signed-out and free users can upload files up to 50MB each. Pro supports 500MB per file, and Business supports up to 5GB per file.