Does compression reduce quality?
At 75% quality or above, differences are virtually imperceptible to the human eye.
Afbeeldingscompressor
Afbeeldingen comprimeren en optimaliseren
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Supports JPG, PNG, WebP - multiple files OK
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Compression quality 80%
Small size High quality
Afbeeldingscompressor
What formats are supported?
JPG, PNG, and WebP are supported. Output is saved in the same format as the original.
Are files uploaded to a server?
No. All processing happens in your browser. Files never leave your device.
What Is Image Compression?
Image compression reduces file size while preserving visual quality. It speeds up website loading, saves storage space, and solves email attachment size limits.
Lossy vs Lossless Compression
Lossy compression (JPEG, WebP) removes imperceptible data for dramatic size reduction. Lossless compression (PNG) shrinks files without any quality loss. A quality setting of 75-85% typically offers the best balance between file size and visual quality.
Why Image Compression Matters
Images account for over 50% of a typical webpage's data. Unoptimized images slow down page loads, waste mobile data, and hurt Google rankings. Image compression alone can improve page speed by 30-70%.
Compression by Format
JPEG uses lossy compression optimized for photos -- at 80% quality, differences are virtually invisible. WebP produces files 25-34% smaller than JPEG. PNG suits graphics needing transparency and uses lossless compression, though metadata removal and palette optimization can still reduce sizes.
Image Compression Best Practices
For web photos, JPEG quality 75-85% is the sweet spot. Use WebP when possible. Resize images to display dimensions before compressing for maximum effect. Strip EXIF metadata for additional savings. Always verify visual quality after compression.
Veelgestelde vragen
Does compression reduce quality?
At 75% quality or above, differences are virtually imperceptible to the human eye.
What formats are supported?
JPG, PNG, and WebP are supported. Output is saved in the same format as the original.
Are files uploaded to a server?
No. All processing happens in your browser. Files never leave your device.