Image Converter
Converts images between PNG, JPG and WebP formats locally in the browser.
Drop an image here, or
Processed in your browser — never uploaded.
Runs entirely in your browser — nothing is uploaded or stored.
How to use this calculator
- Choose an image.
- Pick PNG, JPG or WebP, then Convert and download.
How it works
Re-encodes your image using your browser's canvas. PNG keeps transparency; JPG and WebP are smaller for photos.
Common mistakes
- Converting a photo to PNG and expecting a smaller file — JPEG or WebP usually compress photos better.
- Losing transparency by saving a PNG as JPEG, which has no alpha channel.
Frequently asked questions
Which image formats can it convert between?
Common web formats such as PNG, JPEG and WebP, all converted in your browser without uploading the file.
Which format should I choose?
JPEG or WebP for photos to keep files small, and PNG when you need sharp edges or transparency, such as logos.
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Cite this tool
Zerdly. (2026). Image Converter. Retrieved from https://www.zerdly.com/tools/image-converter/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.