Image Convert
Convert images between PNG, JPEG, and WebP
Which format should you use?
PNG: lossless, supports transparency. Best for screenshots, logos, illustrations with sharp edges. Larger file sizes than lossy formats. JPEG: lossy, no transparency. Best for photos with smooth gradients. Smaller files at the cost of artifacts.
WebP: modern, supports both lossless and lossy modes plus transparency. ~25–35% smaller than equivalent JPEG/PNG. Universally supported by browsers since ~2020. AVIF: even smaller than WebP, but slower to encode and not yet supported in every image library — best for production photography pipelines, less convenient for ad-hoc conversion.
Common use cases
- Convert a phone screenshot from PNG to JPEG to halve its file size for email.
- Convert a stock photo from JPEG to WebP for a faster-loading web page.
- Strip transparency from a PNG by exporting to JPEG against a white background.
- Bulk-convert a folder by repeating the process — drag in each file, convert, download.
Frequently asked questions
Why is the converted file larger than the original?
If you converted a JPEG (already heavily compressed) to PNG (lossless), the output is always larger. PNG can't recover information JPEG already discarded.
Does converting JPEG to JPEG re-compress and lose quality?
Yes — re-encoding always loses some data. Avoid round-tripping JPEGs through editors more than necessary.
Is AVIF supported?
Browser support for AVIF encoding varies — Chrome and Edge can encode, Firefox and Safari support display but not Canvas-based encoding. The tool falls back to WebP if AVIF encoding fails.
Can I convert multiple files at once?
The tool handles one image at a time. For batch conversion, the macOS Finder or Windows Photos can do bulk format changes locally.
Is my image uploaded?
No. Conversion uses the browser's Canvas API; the file stays on your device throughout.