Image Format Converter
Convert image formats PNG/JPG/WebP/GIF
Target Format
Output Quality90%
Upload images to start conversion
Format Information
JPEG
Lossy compression, small size, suitable for photos. No transparency support.
PNG
Lossless compression, supports transparency, suitable for icons and screenshots.
WebP
Modern format, smallest size, supports transparency and animation.
GIF
Supports animation and transparency, but limited colors (256 colors).
BMP
Uncompressed bitmap format, large size, good compatibility.
Features
Professional image format conversion tool
Multi-Format Support
Supports conversion between PNG, JPEG, WebP, GIF, BMP formats
Batch Conversion
Support uploading and converting multiple images simultaneously, one-click download all
Adjustable Quality
JPEG and WebP formats can adjust output quality
Instant Conversion
Convert on upload, real-time display of conversion progress and results
Reconvert
Can reconvert after modifying settings without re-uploading
Local Processing
All conversion is done in browser, images are never uploaded to server
Frequently Asked Questions
Common questions about image format conversion
Which image format should I choose?
Photos: JPEG or WebP, small size, suitable for web display.
Icons/Logo: PNG, supports transparent background, maintains clear edges.
Pursue smallest size: WebP, 25-35% smaller than JPEG.
Animation: GIF or WebP animation.
Highest quality: PNG, lossless compression.
Icons/Logo: PNG, supports transparent background, maintains clear edges.
Pursue smallest size: WebP, 25-35% smaller than JPEG.
Animation: GIF or WebP animation.
Highest quality: PNG, lossless compression.
What happens to transparent background when PNG is converted to JPEG?
JPEG does not support transparency, transparent areas will be filled with white background when converting. If you need to keep transparent background, recommend converting to WebP (supports both transparency and small size) or keep PNG format.
What is WebP format compatibility?
WebP is now supported by all major browsers (Chrome, Firefox, Safari, Edge). iOS 14+, Android 4+ also have native support. Only very old browsers (like IE) do not support it. For web use, you can safely use WebP format.
Why did the file become larger after conversion?
Different formats have different compression characteristics:
• JPEG to PNG: PNG is lossless format, usually larger
• Converting already compressed images: Cannot restore original quality
• Converting to BMP: BMP is uncompressed, file will be very large
Recommend choosing appropriate format based on usage, prioritize WebP.
• JPEG to PNG: PNG is lossless format, usually larger
• Converting already compressed images: Cannot restore original quality
• Converting to BMP: BMP is uncompressed, file will be very large
Recommend choosing appropriate format based on usage, prioritize WebP.
Can I convert animated GIF?
Current version converts animated GIF to static image (only keeps first frame). If you need to keep animation, recommend keeping GIF format or finding specialized GIF processing tools. Future versions may support GIF to WebP animation conversion.