Image Compression ToolLossless Compression & Resolution Control

Local in-browser compression. Safe, fast, and free.

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Drag images here or click to select

Supports JPG, PNG, WEBP formats

Lossless Compression & Resolution Q&A

Common questions about lossless compression, quality, and resolution

No. It mainly reduces size by removing redundant metadata and using better encoding; pixels and visual quality remain the same.
Resolution changes the pixel dimensions; the quality slider affects the encoding compression ratio (JPG/WebP) and may not change pixel dimensions.
PNG and WebP can be truly lossless; JPG can remove EXIF metadata but its encoding is typically lossy.
The page shows original and compressed sizes, plus the reduction percentage for easy comparison.
All processing happens locally in your browser; images are never uploaded — more secure.
Lower the resolution or increase compression ratio to speed up. We recommend a single image under 10MB for best experience.