Convert an image between JPG, PNG and WebP formats, right in your browser.
Converting an image means saving the same picture in a different file format. JPG, PNG, and WebP each handle photos differently, and the format that suits one job can be wrong for another. A screenshot with sharp text belongs in PNG, a photograph is usually smaller as a JPG, and WebP often beats both on file size for the web. This tool lets you move a picture between those three so it fits wherever it is going.
To use it, load an image and pick the format you want out. The browser re-encodes the picture and hands you the new file, with your original left as it was. For photos going to JPG or WebP you can usually trade a little quality for a much smaller file, while PNG stays lossless and keeps every pixel exactly. Choose the output based on where the image will end up.
The technical trade-offs are worth knowing. JPG is lossy and does not support transparency, so a transparent PNG turned into JPG gets a solid background, usually white. PNG is lossless and keeps transparency, but photos saved as PNG can be several times larger than the same photo as JPG. WebP is the modern middle ground, smaller than both at similar quality and able to hold transparency, though a few very old programs still cannot open it.
Reach for conversion when a site or app rejects your format, or when file size matters. If an upload form only accepts JPG or PNG, convert your WebP first. If you want a logo with a see-through background, keep it as PNG or WebP rather than JPG. When you are optimizing a website and your visitors use modern browsers, WebP usually gives the smallest pages.
Typical uses include turning a heavy PNG screenshot into a lighter JPG for email, converting product photos to WebP to speed up a store, changing a WebP saved from the web into a JPG an older tool will accept, and swapping a JPG to PNG when you need a lossless master to edit further.
It all runs in your browser using the device's built-in image encoder, so nothing is uploaded and no account is needed. It is free, and the only real limit is your device's memory, which only shows up with very large images. Sensitive pictures stay entirely on your machine because the conversion never touches a server.
Use JPG for photographs where small size matters, PNG for screenshots, logos, or anything needing transparency, and WebP when you want the smallest file for modern web use. WebP usually wins on size but a few old apps cannot open it. Match the format to where the image will be shown.
JPG cannot store transparency, so any see-through areas are filled in with a solid color, usually white. This is a limitation of the format itself, not a bug. Keep the file as PNG or WebP if you need the transparency preserved.
No, PNG is lossless but it cannot restore detail that JPG already discarded. You get a bigger, lossless file that looks the same as the JPG you started from, not a sharper one. Converting to PNG only helps if you plan to edit and re-save without adding more loss.
It depends on the direction. Photos usually shrink going to JPG or WebP and grow going to PNG. WebP tends to give the smallest result for both photos and graphics at a similar visual quality.
Most modern browsers, phones, and image apps handle WebP fine, but some older software and a few legacy tools still cannot. If you are sending a file to someone on very old software, JPG or PNG is the safer choice. For the web, WebP is widely supported.
No, conversion keeps the same width and height and only changes how the picture is stored. If you also want to change the pixel size, resize the image separately. The two operations are independent.
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