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Free JPG to PNG Converter Online - Convert Files in Seconds

Convert JPG files to PNG format instantly with our free online converter. Add transparency support and lossless quality. No registration, no email required. Fast, secure, and works in your browser. Upload and convert now!

✓ Compatible conversion: JPG → PNG

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Only JPG files are allowed

JPG to PNG Converter

Convert JPEG images to PNG. Free, no signup, no watermark.

What actually happens when you convert JPG to PNG

JPEG and PNG compress images in fundamentally different ways, and moving between them is not a neutral re-labelling.

JPEG is lossy. When an image is saved as JPEG, it is split into 8×8 pixel blocks and high-frequency detail is discarded permanently. That is why JPEG files are small, and why you can see faint halos around sharp edges and blocky patches in flat areas of colour if you zoom in.

PNG is lossless. It stores every pixel exactly as it receives it.

The consequence surprises people: converting a JPG to PNG does not repair JPEG artifacts. Whatever detail the JPEG discarded is gone. PNG will faithfully, losslessly preserve the damage. What you gain is that no further quality is lost from this point on — you can edit and re-save a PNG repeatedly without generational degradation, which is not true of JPEG.

The second consequence is file size. For a photograph, PNG is usually 3 to 8 times larger than the JPEG it came from. A 12-megapixel photo that is 2.4 MB as a JPEG typically lands around 18–25 MB as a PNG. For screenshots, logos, and flat-colour graphics the relationship reverses — PNG is often smaller than JPEG, because it compresses runs of identical pixels extremely well.

About transparency. JPEG cannot store an alpha channel, so a JPEG has no transparency to carry over. Converting to PNG adds an alpha channel in which every pixel is fully opaque. It makes the file capable of transparency for later editing; it does not create any. Any tool claiming to "add transparency" during a JPG to PNG conversion is describing something that cannot happen.

When to convert JPG to PNG

  • You need to edit and re-save the image several times without accumulating compression damage.
  • You are about to cut out a background and need an alpha channel to save into.
  • A system you are uploading to accepts PNG only — some print workflows, app store icon requirements, and older internal tools.
  • The image is a screenshot, diagram, or flat graphic that was mistakenly saved as JPEG. Here PNG genuinely improves it: text edges stop ringing, and the file usually gets smaller.

When not to

  • Publishing photos to a website. The PNG will be far heavier and will slow your pages down. Use WebP or AVIF instead — both are lossless-capable, support alpha, and are supported by every current browser.
  • Expecting quality to improve. It will not. If you need a cleaner image, you need the original, not a conversion.
  • Emailing large photos. You will turn a 2 MB attachment into a 20 MB one.

Limits

  • Maximum file size: 100MB
  • Accepted input: .jpg, .jpeg
  • Processing location: In your browser for files up to 5MB, or on our servers for larger files
FAQ

JPG to PNG Converter FAQ

Frequently asked questions about this converter.

No. JPEG compression is irreversible. PNG will preserve the image exactly as it currently is, including any existing artifacts. The benefit is preventing *future* loss, not undoing past loss.

Because PNG stores every pixel losslessly while JPEG threw most of that data away. Photographs contain fine noise and gradients that PNG cannot compress efficiently. A 3–8× size increase is normal and expected for photos.

No. JPEG files contain no transparency information. The resulting PNG has an alpha channel, but it is fully opaque. You can then erase areas in an image editor and save the transparency into the PNG.

WebP, in nearly every case. It supports both lossy and lossless modes plus transparency, and produces substantially smaller files than PNG at comparable quality. PNG remains the safer choice only where a specific tool or platform requires it.

Yes, you can upload multiple files at once and convert them in batches.