Free JPG to PNG Converter - Convert JPEG to PNG Online
Click to upload or drag & drop
JPG / JPEG • Max 10 MB
Convert any JPG or JPEG image to PNG format instantly with Calcon's free online converter. All processing happens in your browser — your image is never uploaded to any server. No signup, no watermarks, no limits on downloads.
What is JPG to PNG Conversion?
JPG (also called JPEG) is the most common format for photographs. It uses lossy compression — it permanently discards some image data to reduce file size. Once saved as JPG, that data is gone.
PNG uses lossless compression — every pixel is stored exactly as it is, with no data discarded. PNG also supports a full alpha channel for transparency, which JPG does not. Converting JPG to PNG is useful when you need to edit an image further without re-compression, add a transparent background, or use an image in design tools.
How to Convert JPG to PNG
Step 1 — Upload your JPG file
Drag and drop your JPG or JPEG file into the upload area, or click to open the file picker. Files up to 10 MB are supported.
Step 2 — Instant conversion
The conversion runs automatically as soon as the file is loaded. No button to click — results appear in seconds.
Step 3 — Preview the result
Both the original JPG and the converted PNG are shown side by side. The file size of the PNG output is displayed below the preview.
Step 4 — Download your PNG
Click the Download PNG button to save the converted file directly to your device.
JPG vs PNG — Key Differences
| Feature | JPG | PNG |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | ❌ Not supported | ✅ Full alpha channel |
| File size | Smaller | Larger |
| Re-save quality | Degrades each save | No degradation |
| Best for | Photos, web images | Logos, graphics, UI |
When Should You Use PNG Instead of JPG?
- Logos and icons — PNG preserves sharp edges and supports transparent backgrounds.
- Screenshots — text and UI elements stay crisp with lossless PNG; JPEG blurs them.
- Further editing — if you plan to re-edit and re-export an image, PNG avoids generation loss.
- Images with flat colours — PNG compresses solid-colour areas better than JPEG.
- Stickers and overlays — only PNG supports the transparency needed for these use cases.
Frequently Asked Questions
How do I convert JPG to PNG for free?
Upload your JPG or JPEG file using the tool above — drag and drop or click to browse. The conversion happens instantly in your browser. Click Download PNG to save the file. No signup or software install required.
Does converting JPG to PNG improve image quality?
Converting from JPG to PNG does not restore quality lost during the original JPEG compression. However, PNG is lossless — once converted, the image will not degrade further no matter how many times you save or re-export it.
Why is the PNG file larger than the original JPG?
JPEG uses lossy compression to reduce file size by discarding data. PNG stores all pixel data losslessly, which results in larger file sizes. This is expected — you are trading file size for image quality and transparency support.
Does PNG support transparency?
Yes. PNG fully supports an alpha channel for transparency, which is why it is the preferred format for logos, icons, stickers, and images that need a transparent background. JPG does not support transparency at all.
Is my image safe during conversion?
Yes. All processing happens entirely inside your browser using the HTML5 Canvas API. Your image is never uploaded to any server — it stays private on your device at all times.
What is the maximum file size supported?
The tool supports JPEG files up to 10 MB. For larger files, you may want to reduce dimensions first using our free Image Resizer, then convert.
What is the difference between JPG and PNG?
JPG uses lossy compression — it permanently discards some image data to reduce file size, making it ideal for photographs. PNG uses lossless compression — it retains every pixel and supports transparency, making it best for logos, graphics, screenshots, and images that will be edited further.
Can I use this converter on my phone?
Yes. The tool is fully responsive and works on Android and iOS browsers. Upload a photo from your gallery, convert it, and download the PNG — no app installation needed.
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