How to convert an image
- Drop your images onto the box above, or click it to browse. You can add as many as you like.
- Pick the format you want out: JPG, PNG, WebP or AVIF.
- If you chose a lossy format, drag the quality slider — lower means a smaller file.
- Press Convert, then save the files individually or grab them all as a ZIP.
Questions people ask
Are my images uploaded anywhere?
No. The conversion runs as code inside this browser tab using your own processor. Nothing is sent over the network, which is why there is no upload progress bar and why it works with the internet switched off.
Is there a limit on how many images, or how large?
There is no limit imposed by us. The practical ceiling is your device’s memory — a laptop will happily do hundreds of photos, while an older phone may struggle past a few dozen very large ones.
Can it convert HEIC photos from my iPhone?
Yes. Drop .heic or .heif files in and pick JPG or PNG as the output. The first HEIC file takes a moment longer while the decoder loads, then the rest are quick.
Which format should I choose?
JPG for photographs you need maximum compatibility with. PNG when you need a transparent background or pixel-exact graphics. WebP is a good all-rounder that is roughly 30% smaller than JPG at the same quality. AVIF is the smallest of all but takes longer to encode and is not readable by very old software.
Why is my converted PNG larger than the JPG I started with?
PNG is lossless, so it stores every pixel exactly. Converting a photo from JPG to PNG cannot recover the detail JPG discarded, but it does store the result without compression — so the file grows without looking any better. Convert to PNG only when you actually need transparency or exact pixels.