How to use
Select a file, choose format, maximum dimensions and quality, then convert. Dimensions are bounds: aspect ratio is preserved without upscaling. Review the size and download.
A 4000 × 3000 image bounded to 1600 × 1600 becomes 1600 × 1200.
IMAGE CONVERTER
Image Converter & Compressor
Convert JPEG, PNG and WebP locally, resize proportionally and compare file sizes.
Static JPEG / PNG / WebP · Up to 20 MB and 20 megapixels
Aspect ratio is preserved without upscaling. JPEG fills transparency with white; PNG ignores quality. Re-encoding changes the file and may alter metadata and color.
Choose an image.
Files stay in this browser. No upload or automatic saving.
Keep in mind
Static images only. Animated WebP/APNG, GIF, HEIC and SVG are unsupported. Limits: 20 MB, 20 megapixels, 10,000 pixels per side. PNG ignores quality; output may be larger. JPEG uses a white background for transparency. Encoding, color and metadata may change; keep the original.
Common questions
Why is the output larger? The source may already be optimized. Changing format or preserving more pixels can increase size. Try WebP/JPEG, lower quality or smaller dimensions.