Image to PNG Converter
Convert your images to lossless PNG format.
Drop your JPEG/WebP image here
or click to browse · max 50 MB
Settings
wasm-vips (~5MB) will be downloaded on first use and cached by your browser.
Image to PNG Converter
Converts JPEG and WebP images to lossless PNG format. PNG uses lossless compression, preserving every pixel perfectly. Ideal for graphics, screenshots, and images requiring transparency.
What is it used for?
- Converting photos to lossless format for editing
- Creating transparent images from JPEG originals
- Preserving screenshot quality for documentation
- Print-ready image preparation
Step-by-Step Guide
- Upload a JPEG or WebP image
- Adjust PNG compression level (0-9)
- Click 'Convert to .PNG'
- Download the lossless PNG
How it works
Upload a JPEG or WebP image and click Convert. wasm-vips decodes the image and encodes it as PNG with your chosen compression level.
Tips & Best Practices
- Compression level only affects file size and encoding speed, not quality
- Level 6 is a good balance between speed and compression
- PNG is best for graphics, screenshots, and images with text
Frequently Asked Questions
Why are PNG files larger than JPEG?
PNG is lossless - it preserves every pixel exactly. JPEG uses lossy compression that discards data to achieve smaller sizes. The tradeoff is perfect quality vs smaller files.
Will quality improve converting JPEG to PNG?
No. Converting from lossy (JPEG) to lossless (PNG) preserves the current quality but cannot restore data lost during JPEG compression.
Privacy & Security
This tool uses wasm-vips (libvips compiled to WebAssembly). The WASM binary (~5MB) is downloaded on first use and cached by your browser. All image processing happens locally on your device - your images are never uploaded to any server. This makes it safe for sensitive, private, or confidential images.