How it works
- Drop your files in the zone above (or click it, or paste with Ctrl+V).
- They convert instantly, right in your browser — nothing is uploaded.
- Adjust quality or max width if needed; files reconvert automatically.
- Download files one by one, or everything at once as a ZIP.
About the formats
JPG
JPG (JPEG) is the most widely supported image format ever made — every camera, phone, program and website accepts it. It compresses photos efficiently but doesn't support transparency, and each re-save at low quality degrades the image a little more.
PNG
PNG is the standard lossless format: perfect quality, full transparency support, and universal compatibility. Its weakness is size — photographs saved as PNG are often 5–10× heavier than a visually identical JPG or WebP.
What this conversion actually gives
Measured with the converter on this page, on a 2016 × 1512 px test image: the JPG file weighs 1002 KB.
| Setting | Result | Change |
|---|---|---|
| Lossless (PNG ignores the quality slider) | 6.8 MB | +599 % |
| Max width 1600 px, quality 85 % | 4.2 MB | +326 % |
Converting to PNG makes the file bigger here (+599 %): PNG stores every pixel exactly, so it cannot beat a format that was already compressed with loss.
Capping the width at 1600 px gives 4.2 MB — plenty for any screen.
- PNG is lossless: not a single pixel is altered.
- Camera model, date and GPS coordinates stored by the device are removed unless you tick « keep metadata ».
Your own files will differ — a photo full of detail compresses less well than a flat graphic. These figures come from one reproducible test image, not from an average.
Frequently asked questions
How big will my PNG file be?
On our 2016 × 1512 px test image, a JPG of 1002 KB comes out at 6.8 MB at the default quality (+599 %). Lower the quality slider or set a maximum width and the figure drops further — the page shows the new size as soon as the file is reconverted.
Does converting JPG again reduce quality?
One conversion at 85–95% quality is visually indistinguishable for almost all photos. Quality loss only becomes visible after repeated low-quality re-saves.
Will converting to PNG keep transparency and quality?
Yes. PNG is lossless, so no quality is lost, and it preserves transparent backgrounds — ideal for logos, screenshots and graphics with sharp edges. The trade-off is a larger file than JPG or WebP.
Are my files really private?
Yes. The conversion runs entirely in your browser using its built-in image engine. Your files are never uploaded, stored or seen by any server — you can even disconnect from the internet after the page loads and keep converting.
Is this free? Is there a file limit?
Completely free, no account, no watermark. Convert as many files as you like, up to 200 MB each — the only limit is your device's memory.
Can I convert many files at once?
Yes — drop a whole batch at once. Each file converts independently and you can grab everything in a single ZIP when done.