About the Compress Image
Resamples and quantizes bitmap image data via HTML5 Canvas in browser memory, applying tailored compression algorithms to reduce file weight with real-time visual quality comparison and instant size calculation.
How to Use the Interface
Upload Image
Select the image you want to optimize from your device.
Adjust Compression Level
Use the quality slider to balance file size reduction against visual fidelity.
Inspect & Download
Compare before and after sizes in real time and download your compressed file.
Technical Format Specifications
- JPG, JPEG, PNG, WebP
- Optimized JPG (.jpg) or WebP (.webp)
- •Re-compressing already heavily compressed JPEGs may yield minimal size savings or introduce compression artifacts.
- •PNG compression typically converts to WebP format for optimal byte reduction.
- Canvas re-encoding automatically strips proprietary camera EXIF metadata (GPS location, device serial numbers).
- Processing executes in volatile client RAM; no images are uploaded to any cloud server.
Common Practical Use Cases
Website Page Speed Optimization
Shrink hero banners and product images to improve Largest Contentful Paint (LCP) scores.
Email Attachment Compliance
Reduce high-resolution smartphone photos below restrictive email attachment thresholds.
Frequently Asked Questions
How does in-browser image compression work?
Your browser decodes the image into an in-memory Canvas 2D context and re-encodes the pixel matrix with tailored quality quantization parameters via canvas.toBlob().
Will my camera location data (EXIF) be removed?
Yes. Re-encoding via HTML5 Canvas strips EXIF metadata blocks (including GPS coordinates and camera model info), providing an extra layer of privacy.