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Image Compressor Online

Free tool for compressing images with quality and size control

image-compressor

Drop image here or click to upload

80%High
JPEG
Upload an image to compress
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🎛

Quality Control

Flexible quality adjustment from low to maximum

📐

Resize

Limit maximum width and height of images

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Preview

Compare original and compressed image side by side

⚡

Fast Processing

Instant compression in browser without server upload

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Frequently Asked Questions

Image compression reduces file size by removing redundant data. There are two types: lossy (JPEG) and lossless (PNG). Lossy compression discards imperceptible details, while lossless compression optimizes data storage without altering quality.
Lossy compression permanently removes some data for a significant size reduction — ideal for photographs. Lossless compression preserves all data and allows full recovery of the original — best for graphics, logos, and screenshots.
JPEG compression at 70-80% quality typically reduces file size by 50-80% without noticeable quality loss. Converting PNG to JPEG can save up to 90%. Results depend on the image content and chosen settings.
For photos, JPEG or WebP offer the best quality-to-size ratio. For graphics with transparency, use PNG or WebP. WebP is the most modern format, producing files 25-35% smaller than alternatives at comparable quality.