Image converter
Change the format. Keep the file on your device.
Local browser processing
How it works
- Choose a JPG, PNG, WebP, or HEIC file.
- Pick the output format and quality.
- Convert it and download the new file.
Picking the right format
Converting an image means re-saving the same picture in a different format. The pixels you see do not change — what changes is how they are stored, and that decides file size, whether transparency survives, and which apps can open the result. This tool reads JPG, PNG, and WebP, and it also opens HEIC and HEIF photos from an iPhone, then writes back out as JPG, PNG, or WebP.
Lossy or lossless
The first thing to know about any format is whether it throws detail away. JPG and WebP are lossy: the encoder discards information your eye is least likely to notice, which is how they stay small. PNG is lossless: every pixel is kept exactly, so a screenshot or line-art export stays crisp with no smearing around edges and text. WebP can work either way, lossy for photos or lossless for graphics.
Transparency and compatibility
PNG and WebP can store transparent areas; JPG cannot. Convert a transparent PNG to JPG and every see-through pixel is filled with a solid background — usually white. That is the one conversion worth pausing on, because it cannot be undone by converting back. On compatibility, JPG and PNG open essentially everywhere, WebP is supported across current browsers and most modern software though a few older tools still choke on it. The WebP vs PNG guide goes deeper on that trade-off.
| Format | Type | Transparency | Best for |
|---|---|---|---|
| JPG | Lossy | No | Photos you share or upload anywhere |
| PNG | Lossless | Yes | Screenshots, logos, sharp graphics |
| WebP | Lossy or lossless | Yes | Smaller images for the web |
| HEIC | Lossy, high efficiency | Yes | Saving space on Apple devices (input only) |
Which way should you convert?
- PNG to JPG — for a photo saved as PNG that is far larger than it needs to be. Try PNG to JPG.
- JPG to PNG — when a tool insists on PNG, though it will not restore detail JPG already dropped. See JPG to PNG.
- Anything to WebP — to shrink images for a website while keeping transparency. Use PNG to WebP or JPG to WebP.
- iPhone photos — turn a HEIC into something universal with HEIC to JPG.
One file is converted at a time, and it happens entirely inside this browser tab, so nothing is uploaded. If the goal is a smaller file rather than a different format, the image compressor gives you a quality control, and resizing the dimensions with the image resizer often saves even more.
Questions
- Which formats can I convert between?
- You can convert JPG, PNG, and WebP freely, and bring in HEIC or HEIF photos from an iPhone. Pick the output format that fits where the image will be used.
- Will converting to JPG lose transparency?
- Yes. JPG has no transparency, so transparent areas become a solid background. Keep PNG or WebP if you need to preserve transparency.
- Does converting JPG to PNG improve the quality?
- No. PNG stores every pixel exactly, but it cannot recover detail a lossy JPG already discarded. The PNG just preserves the JPG as it is, usually in a larger file.
- What is the difference between lossy and lossless formats?
- Lossy formats like JPG and WebP drop some detail to stay small, which suits photos. Lossless PNG keeps every pixel, which suits screenshots, logos, and sharp text.
- Can I convert several images at once?
- The converter works on one image at a time. Convert the first, then load the next — each stays on your device.
- Is anything uploaded to a server?
- No. The conversion happens entirely in your browser, so the original file stays on your device and the tool works offline.