Original
A large PNG/JPEG
Result
A smaller local output file
Image Tools
Image Compressor — Local PNG Quantization and Size Control
Compress PNG, JPEG, WebP, and similar images in batches. PNG uses lossy color quantization while preserving transparency; files stay on this device.
ImageCompressionOptimization
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Image tools
Image compressor
Compress PNG, JPEG, and WebP files in batches. PNG color quantization runs locally.
0–100%
Choose images. Desktop: up to 50 files, 50 MB each. Limited devices: 10 files, 25 MB each.
Original: - Result: - Savings: -
Original preview
The first completed file will appear here
Result preview
The first completed file will appear here
PNG reduces similar colors and removes metadata. Do not use it for archival 16-bit or print-profile images.
Use cases
- Compress campaign art before uploading to a CMS
- Reduce page image weight
- Shrink screenshots before sharing
How to use
- Upload one or more images
- Set max dimensions and PNG or JPEG/WebP quality
- Download individual results or a ZIP
Example input and output
FAQ
Which formats are supported?
Inputs include PNG, JPEG, WebP, BMP, and AVIF. Outputs include PNG, JPEG, and WebP; decoding still depends on browser support.
Are files uploaded to a server?
No. Compression runs locally, which suits sensitive business imagery.
Is PNG compression lossless, and will every file become smaller?
No. PNG uses lossy 256-, 192-, or 128-color quantization and removes metadata. If same-format output without resizing is not smaller, the original file is kept.
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