Image Format Converter
Convert between PNG, JPG and WebP. Runs in your browser — images are never uploaded.
No upload, no data sent — everything runs in your browser.
About this tool
The image format converter transforms between PNG, JPG, and WebP. It runs in your browser and never uploads your images. Choosing well comes from understanding each format's strengths and what a conversion loses.
Lossless vs lossy
PNG uses lossless compression with no degradation and suits crisp-edged images like figures and screenshots. JPG is a lossy format that compresses photos efficiently, and information once discarded cannot be recovered. Watch for "generation loss" too — editing and re-saving a JPG stacks up a little degradation each time.
Whether transparency is kept
PNG and WebP can hold transparency (alpha), but JPG cannot. Convert a transparent image to JPG and the transparent areas are filled with a background color (usually white). Keep logos and cut-out images as PNG or WebP.
WebP and AVIF
WebP tends to make smaller files at comparable quality and now displays widely across major browsers. AVIF compresses even further, but its support is not as broad as WebP. For distribution where compatibility matters most, well-established PNG or JPG is the safe choice.
Keep the source in its original format
An image converted to lossy JPG or WebP cannot be restored to its original quality. If you may re-edit, keep the pre-edit data in as lossless a format as possible.
How to use
- Drop an image or click to select one.
- Choose the output format (PNG / JPEG / WebP). For JPEG and WebP you can adjust the quality slider.
- Check the converted preview and before/after sizes, then download to save.
FAQ
Are my images uploaded to a server?
No. All conversion is processed in your browser, so images are never sent to an external server. The conversion is completed entirely on your own device.
How should I choose among PNG, JPG, and WebP?
PNG suits diagrams and screenshots and preserves transparency; JPG suits photos (no transparency); WebP suits web display where you want smaller files at similar quality. Choose to fit your purpose.
What happens to transparency when I convert PNG to JPG?
JPG cannot hold transparency, so transparent areas are filled with a background color (usually white). To keep transparency, stay with PNG or WebP.
Does converting reduce quality?
JPG and WebP discard data through compression, so quality can drop depending on the setting. PNG uses lossless compression but tends to make large files for photos. Choose based on the quality/size trade-off.
Can I restore a compressed image to its original high quality?
No. Information discarded by a format like JPG cannot be recovered. If you may re-edit, keep the original image, ideally in a lossless format.
Can it convert animations or special images?
It is designed mainly for converting a single still image. Animations or images with special profiles may not convert as intended.