Convert PNG, JPG, WebP and AVIF in any direction, one at a time or fifty at once. The decoding and encoding are done by the browser itself, so the images are never uploaded and the conversion is close to instant.
Each format has its job: PNG for graphics with flat areas of colour, JPEG for maximum compatibility, WebP as the default for the web, and AVIF when weight matters more than computation time.
How to use it
- Drag the images onto the area above, or click to pick them.
- Choose the target format and, where it applies, the quality.
- Press “Process” and download the results one by one or together as a ZIP.
Frequently asked questions
- Which format should I use on the web?
- WebP in nearly every case. Every browser has supported it since 2020 and it weighs 25 to 35 % less than a JPEG of equivalent quality. AVIF is smaller still, but takes far longer to encode.
- Is quality lost when converting?
- It depends on the target. PNG and lossless WebP keep the exact pixels. JPEG, ordinary WebP and AVIF recompress, and the loss accumulates: always convert from the original, never from an already-compressed copy.
- What happens to transparency?
- PNG, WebP and AVIF keep it. JPEG has none, so the alpha channel is flattened onto the background colour you choose before encoding.
- Is there a size or file-count limit?
- None that we impose. The only limit is the tab’s memory, because images are decoded whole. With very large files it is worth working in batches.
Related tools
Compress imagesCut the weight by quality, or down to a size you pick.
Resize imagesWidth and height with fit control, and no upscaling by default.
Crop imagesDraw the crop on the picture and apply it to the whole batch.
Rotate and flipQuarter turns, and horizontal or vertical flips.
Strip metadataRemoves EXIF, GPS and profiles by re-encoding to the same format.