PNG photo to JPEG
- Input
- 4.2 MB PNG photograph, JPEG at 85%
- Output
- About 500 KB
PNG stores photographs very inefficiently. Converting to JPEG usually cuts the size by 80% or more with no visible change.
Image Converter
Converting an image changes the format it is stored in — JPEG, PNG, WebP or AVIF — without changing what the picture shows. Each format has different strengths: JPEG for photos, PNG for transparency, WebP and AVIF for the smallest files. Drop images in, pick a target format, and download.
Runs entirely in your browser — your images are never uploaded.
How to
How to use the Image Converter
- 1
Add images
Drop in any mix of JPG, PNG, WebP, AVIF, GIF or BMP files.
- 2
Pick the output format
Formats your browser cannot encode are disabled rather than silently producing the wrong file.
- 3
Set the quality
Applies to the lossy formats. PNG ignores it, being lossless.
- 4
Download
Save individually or take everything as a ZIP.
Examples
Image Converter examples
PNG with transparency to JPEG
- Input
- Logo with a transparent background
- Output
- Transparent areas become white
JPEG has no alpha channel. Transparency has to be flattened to a colour — white here, rather than the black most tools produce by accident.
Anything to WebP
- Input
- JPEG at 85%, WebP at 85%
- Output
- Typically 25–35% smaller
WebP compresses better than JPEG at the same visual quality and is supported by every current browser.
Why use it
What the Image Converter gives you
Transparency flattened to white
Converting a transparent PNG to JPEG paints white behind it. Most converters leave it black, which ruins logos.
Honest format support
The browser is tested for each format before it is offered. A canvas silently returns PNG when it cannot encode what you asked for.
Batch conversion
Convert a whole folder in one pass and download the results as a ZIP.
Correct orientation
EXIF rotation is applied on decode, so portrait photos stay portrait.
Private and free
Conversion happens in your browser. No upload, no account, no watermark.
Good to know
Image Converter limitations
- Converting between lossy formats re-compresses the image, so quality drops slightly each time.
- AVIF encoding is not available in every browser and is much slower than the others.
- Animated GIF and WebP are flattened to their first frame.
- Images are limited to 25 MB each.
Summary
Image Converter in short
- JPEG suits photos, PNG suits transparency and flat graphics, WebP and AVIF are smaller than both.
- Converting to JPEG flattens transparency; this tool fills it with white rather than black.
- Each lossy-to-lossy conversion loses a little quality, so convert from the original.
- Conversion runs in your browser and images are never uploaded.
FAQ
Image Converter questions
Which image format should I use?
WebP for almost everything on the web — it is smaller than JPEG and PNG and universally supported. JPEG for maximum compatibility with older software, PNG when you need transparency or pixel-exact graphics, AVIF when you want the smallest possible file.
What happens to transparency when I convert to JPEG?
JPEG has no alpha channel, so transparent areas must be filled with a solid colour. This tool fills them with white. Many converters default to black, which is why logos sometimes come out with a dark box behind them.
Is WebP supported everywhere?
Yes, in every current browser — Chrome, Firefox, Safari and Edge have all supported it for years. Some older desktop software still does not, which is the main reason to keep JPEG around.
Should I use AVIF?
AVIF produces the smallest files, often 20–30% below WebP at the same quality. Encoding is much slower and not every browser can create AVIF, though most can display it. Use it when file size matters more than encode time.
Does converting lose quality?
Converting to a lossless format such as PNG does not. Converting to a lossy format re-encodes the image and loses a little. Converting a JPEG to another JPEG loses quality twice over, so always work from the original.
Why is my PNG so much bigger than the JPEG?
PNG is lossless and designed for flat colour and sharp edges. Photographs have millions of subtly different pixels, which PNG has to record exactly — often five to ten times the size of an equivalent JPEG.
Can I convert several images at once?
Yes. Add as many as you like and they are processed one after another, then offered as a single ZIP. Each keeps its original name with the new extension, so a folder of files stays recognisable.
Can I convert animated GIFs?
Only the first frame. Canvas-based conversion cannot preserve animation — a dedicated GIF or video tool is needed for that.
Where does the conversion actually happen?
No. Everything is decoded and re-encoded in your browser, so images never leave your device.
Discover
Related image tools
Image CompressorCompress JPG, PNG and WebP images in your browser. Set a quality level or a target size and see exactly how much you saved.WebP ConverterConvert JPG and PNG images to WebP, or WebP back to JPG and PNG. Batch convert with quality control, all in your browser.AVIF ConverterConvert JPG, PNG and WebP images to AVIF, the smallest modern image format, or convert AVIF back for compatibility.Image ResizerResize images by pixels or percentage, with the aspect ratio locked. Batch resize and download as a ZIP. Runs in your browser.