JPEG to PNG
Upload a JPEG file and download it as PNG. Free to start.
- Sent over HTTPS · link expires in 24 h
How it works
- Step 1:
Drop the JPEG file on the orange block above, or press “Choose JPEG”.
- Step 2:
Press “Convert to PNG”. The block shows the progress while the server converts the file.
- Step 3:
Press “Download” to save the PNG file. On Free the link works for 24 hours.
How JPEG to PNG conversion works
JPEG Image (JPEG) uses lossy DCT compression that permanently discards fine pixel detail to achieve small file sizes, ideal for photographs. Portable Network Graphics (PNG) uses lossless DEFLATE compression and supports a full alpha-transparency channel, preserving every pixel exactly as encoded. This conversion changes the file's encoding, compression method, and supported feature set. The output is pixel-accurate: no further quality is lost beyond what the source already encoded. The result is a standard PNG file readable by any compatible application. 1converter handles JPEG-to-PNG conversion server-side: files are uploaded over HTTPS, processed on isolated cloud infrastructure, and the converted output is available for download for 24 hours before automatic deletion. No account is required for standard conversions.
Sources and specifications
Quality levels for JPEG → PNG
| Level | File size | Speed |
|---|---|---|
| Low qualitySmallest file, basic quality | Very small | Very fast |
| Medium qualityRecommendedBalanced size and quality | Medium | Fast |
| High qualityLarger file, great quality | Large | Moderate |
| Maximum qualityLargest file, best possible quality | Very large | Slow |
Image Tip: For photos, Medium quality offers the best balance. For graphics with text or sharp edges, use High or Maximum quality to preserve clarity.
When to convert
What the PNG file is good for and why people convert to it.
- Lossless PNG keeps pixel data intact, avoiding JPEG generation artifacts
- Better for sharp lines and text than JPEG’s blocky compression
- Extracting crisp assets from a saved JPEG for a website header
- Converting a JPEG screenshot to PNG before adding annotations
Where your file goes
- It travels to our server over an encrypted HTTPS connection and is converted there.
- The PNG file comes back as a private link. It stops working after 24 hours on Free and 7 days on paid plans, and then the files are deleted.
- Want the file to stay on your device? Private Mode converts images right in the browser. Open Private Mode