Convert JPG images to PNG online — free, private, and instant.
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Files are processed in your browser and never uploaded
JPG to PNG Converter · runs entirely on your device
This tool converts JPG images to PNG directly in your browser. The file is decoded onto an HTML canvas and re-encoded as PNG, so it never touches a server and the conversion finishes in milliseconds.
PNG is lossless and preserves transparency, which makes it ideal for logos, icons, and screenshots.
JPG is a lossy raster format that compresses photographic images by discarding detail the human eye is unlikely to notice. Quality is set on a 0–100 scale; most web images use 60–85.
Best for: Photographs and complex images with smooth colour gradients, where small file size matters more than pixel-perfect accuracy. Trade-offs: No transparency, visible artefacts at low quality, and every re-save loses a little more detail (generation loss).
PNG is a lossless raster image format that supports up to 16.7 million colours plus a full 8-bit alpha channel for transparency. It uses DEFLATE compression, so re-saving a PNG never degrades quality.
Best for: Logos, icons, screenshots, line art, and any image that needs sharp edges or a transparent background. Trade-offs: Files are much larger than JPG or WebP for photographs, and PNG cannot store animation.
| Property | JPG | PNG |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | No | Yes |
| Typical use | Photographs and complex images with smooth colour gradients | Logos |
Drop your JPG file into the box above, wait a moment while it is processed in your browser, then download the PNG result. Nothing is uploaded to a server.
Yes. Every tool on ConvertFlow is free to use with no sign-up, no watermark, and no file-count limits.
The conversion runs entirely in your browser using the Canvas API. Your files never leave your device.
Yes — add several JPG files and each one is converted to PNG and offered as a separate download.
Looking for something else? See all converters.