Reduce PNG size with color-palette quantization and keep the output as a genuine PNG file.
Compress PNG images with browser-side palette quantization while keeping PNG output and transparency data in the image pipeline.
PNG does not expose a JPEG-style quality slider in the browser. Toolmera instead uses palette quantization: the decoded RGBA pixels are re-encoded with a limited color palette.
You can choose 256, 128 or 64 colors. Fewer colors can reduce size more, but gradients and detailed artwork may show stronger color simplification.
Unlike Toolmera’s general Compress Image page, this dedicated tool does not convert PNG input to WebP. The output remains a PNG blob.
The encoder receives RGBA pixel data, so transparency is part of the source used during the PNG re-encode. Always inspect important assets before replacing originals.
Use this tool when a destination specifically requires PNG or when you need to stay within a PNG-based workflow. If format flexibility is available, PNG to WebP may produce a smaller web-delivery file.
Choose files or drag and drop them into the batch area.
Choose the available quality or palette setting and start processing.
Review each output size and download the compressed files individually.
Useful next steps in the same workflow.
No. Compress PNG produces a PNG output file.
It limits the palette used by the PNG encoder. Lower palette counts can reduce file size but may simplify colors more visibly.
The compressor encodes from RGBA pixel data, including alpha information from the decoded source. Check the output visually for critical transparent assets.
No. Palette quantization can reduce color precision, so the dedicated compressor should be treated as a lossy PNG optimization workflow.