Compress PNG Online Free (Preserve Transparency) | ImagePlumber
Compress PNG images offline in your browser with zero quality loss and intact transparency. 100% private alternative to TinyPNG with zero cloud uploads.
How It Works: Easy 3-Step Guide
- Upload PNG Image: Select or drag your PNG image into the browser compressor.
- Fine-tune Optimization: Adjust compression level or convert to lossless WebP for maximum byte savings.
- Download Compressed PNG: Save the optimized PNG file instantly without server delays.
Key Features & Processing Details
- Lossless PNG optimization
- Preserves alpha channel transparency
- Side-by-side comparison slider
- 100% Client-side sandbox execution
Frequently Asked Questions (FAQ)
How much can I reduce my file size?
Usually between 50% to 90% depending on the format and detail of the image. Standard photos can be heavily optimized without noticeable quality loss.
Does it support batch image compression?
Yes, if you need to convert, merge, or compile multiple images into a single PDF or other formats at once, check out our Batch Image to PDF & Format Converter tool.
Are my private photos sent to any servers?
Never. The compression is computed entirely in your browser memory via JavaScript and local canvas contexts. No data leaves your machine.