Image Format Converter
About Image Conversion
Convert your images between different formats instantly. All processing happens in your browser - your images never leave your device.
Format Guide:
- • PNG: Best for images with transparency, lossless compression
- • JPEG/JPG: Best for photos, smaller file sizes, lossy compression
- • WEBP: Modern format with excellent compression, supports transparency
- • BMP: Uncompressed format, large file sizes, maximum quality
Frequently Asked Questions
What image formats can I convert to and from?
This converter supports PNG (lossless with transparency), JPEG/JPG (lossy compression for photos), WEBP (modern format with superior compression), and BMP (uncompressed bitmap). You can convert between any of these formats. PNG and WEBP support transparency, while JPEG doesn't. WEBP offers the best compression with quality, reducing file sizes significantly.
What happens to image quality when converting between formats?
Converting from lossless formats (PNG, BMP) to JPEG uses lossy compression, which may reduce quality. The quality slider controls JPEG compression (0-100%, higher is better). Converting PNG to WEBP maintains excellent quality with smaller file size. Converting JPEG to PNG won't improve quality but increases file size. Always keep original files if quality preservation is critical.
How do I preserve transparency when converting images?
To preserve transparency, convert to PNG or WEBP formats which support alpha channels. JPEG doesn't support transparency - transparent areas will be converted to a solid color (usually white or black). For web graphics, logos, and icons with transparency, use PNG or WEBP. WEBP offers better compression than PNG while maintaining transparency.
Which format should I use for web performance optimization?
For modern websites, use WEBP format which provides 25-35% better compression than JPEG and PNG while maintaining quality. For photos, JPEG (80-90% quality) offers good balance. For graphics with transparency, use PNG or WEBP. Consider providing multiple formats with HTML picture element for browser compatibility. Compress images to appropriate resolution for faster loading.
Does the image converter work offline and is my data secure?
Yes! This image converter runs entirely in your browser using HTML5 Canvas API. Your images are processed locally on your device and never uploaded to any server. This ensures complete privacy and works offline once the page is loaded. Your photos and graphics remain on your computer throughout the conversion process.
Can I batch convert multiple images at once?
Currently, this tool processes one image at a time for optimal quality control. For each conversion, you can adjust quality settings, preview results, and download the converted file. This approach gives you precise control over each image's output quality and format, ensuring best results for different types of images (photos, graphics, screenshots).