Image Format Converter
ImageConvert images between PNG, JPEG and WebP formats with quality control and white background fill for JPEG transparency and compatibility handling.
About Image Format Converter
Different scenarios call for different image formats: WebP is smallest for the web, JPEG has the best compatibility for printing, and PNG is required when you need transparency. This tool converts between PNG, JPEG and WebP locally in your browser, with quality control and automatic white background fill for JPEG transparency handling. Nothing is uploaded.
How to Use
- Open the Image Format Converter tool page
- Enter or paste your data into the input area
- View the real-time results and use the copy button to get the output
Use Cases
- PNG to JPEG — Convert transparent PNGs to JPEG with automatic white background fill for scenarios that don't support transparency.
- Batch convert to WebP — Convert JPEG/PNG to WebP in bulk to shrink web image size and speed up loading.
- JPEG to PNG — Convert JPEG to PNG for further editing, avoiding compounding lossy compression.
- Social platform fit — Convert images to the format each platform expects before uploading to avoid re-compression artifacts.
FAQ
What happens to transparency when converting PNG to JPEG?
The tool automatically fills transparent areas with a white background to avoid black or garbled regions. To keep transparency, convert to WebP or keep PNG.
Does conversion lose quality?
When converting to JPEG or WebP you can set a quality parameter - lower quality means smaller size. Converting to PNG is lossless.
Which conversions are supported?
Any direction between PNG, JPEG and WebP, including cross-format conversion.
Are images uploaded?
No. All conversion runs locally in your browser via the Canvas API. Images are never uploaded.
Can I batch convert?
Yes. Drag in multiple images, pick the target format, and batch-convert and download them all.
Comments
Comments are stored locally in your browser. Configure Giscus for cloud-based comments.