Convert images between PNG, JPG and WebP in your browser.
Processed locally — your image is never uploaded.
How do you convert an image between PNG, JPG and WebP?
The image is drawn onto a canvas and re-encoded in the chosen format. JPG and WebP use the quality setting, while PNG is lossless; JPG has no transparency, so it is flattened on white. PNG suits graphics, JPG suits photos, and WebP usually gives the smallest file at similar quality. Everything runs locally in your browser.
Understanding your result
PNG suits graphics and transparency, JPG suits photos, and WebP usually gives the smallest file at similar quality.
Formula and method
The image is drawn onto a canvas and re-encoded in the chosen format. JPG and WebP use the quality setting; PNG is lossless. JPG has no transparency, so it is flattened on white.
Assumptions and limitations
Conversion re-encodes the image on a canvas in your browser, so quality depends on the target format and setting. JPG and WebP are lossy at lower quality values, and converting to JPG discards transparency by flattening the image onto a white background, which cannot be recovered afterwards.
Worked example
A large PNG screenshot converted to JPG at 80% quality is often a fraction of the size.
How to use this tool
- Choose an image.
- Pick the output format and quality.
- Convert and download.
Common mistakes to avoid
- Converting a transparent PNG to JPG and losing transparency (it becomes white).
About the Image Format Converter
Convert an image between PNG, JPG and WebP and download the result. Everything runs locally in your browser.
Who should use this tool
Anyone who needs a different image format for the web, email or a tool that only accepts certain types.
Benefits
- The image is processed locally, so your file is never uploaded to a server.
- You can switch freely between PNG, JPG and WebP to suit graphics, photos or web delivery.
- WebP typically produces the smallest file at similar quality, cutting page weight.
- The converted image downloads immediately, with no sign-up or watermark.
Practical use cases
- Turning a heavy PNG screenshot into a much smaller JPG for sharing or email.
- Converting photos to WebP to reduce a web page's total download size.
- Producing a JPG from a graphic when a service only accepts that format.
- Keeping PNG for logos and icons where transparency and sharp edges must be preserved.
Frequently asked questions
Is my image uploaded?
No. Conversion happens entirely in your browser; the file never leaves your device.
Which format is smallest?
WebP is usually the smallest at a given quality, followed by JPG for photos.
What happens to transparency when I convert to JPG?
JPG does not support transparency, so any see-through areas are flattened onto a white background during conversion. If your image relies on a transparent background, choose PNG or WebP instead; converting to JPG and back will not restore the original transparent regions.