Browser edition: files stay on your device. Up to 100 MB total and 10 minutes. First use downloads a 32 MB engine. Some formats depend on codec support. Public-link downloading is not ready on this free deployment.
Convert JPG to PNG
Convert JPG to PNG online for free — right in your browser, without uploading. Real conversion, batch support, no sign-up.
How to convert JPG to PNG
- Add your fileDrop it on the page, choose it from your device, or paste it with Ctrl+V.
- ConvertAdjust settings if you like, then press the button. You'll see live progress.
- Browser processing uses original files on your device. Public-link downloading is unavailable.
What happens to your file
JPG files are common for photos, web images, email attachments, printing, but not every app or device opens them. PNG works best for logos, screenshots, graphics with transparency. Spool converts JPG to PNG with FFmpeg and libheif/Pillow — real decoding and encoding, not a renamed file extension.
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
JPG vs PNG
| JPG | PNG | |
|---|---|---|
| Full name | JPEG | Portable Network Graphics |
| Created by | Joint Photographic Experts Group, 1992 | W3C, 1996 |
| Type | Image | Image |
| Typical contents | lossy DCT compression, 8-bit color | lossless DEFLATE compression with alpha channel |
| Best for | photos, web images, email attachments, printing | logos, screenshots, graphics with transparency |
| Strength | Universal compatibility | Lossless quality |
| Weakness | No transparency | Large files for photographs |
About JPG
- Type
- JPEG
- Contains
- lossy DCT compression, 8-bit color
- Use
- photos, web images, email attachments, printing
About PNG
- Type
- Portable Network Graphics
- Contains
- lossless DEFLATE compression with alpha channel
- Use
- logos, screenshots, graphics with transparency
FAQ
Are my photos uploaded?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Can I convert several JPG files at once?
Yes. Drop up to 10 files at a time — each one is converted in parallel and you can download them individually or all at once.
Is there a file size limit?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Is this JPG to PNG converter free and safe?
Yes. There are no pop-ups, redirects or fake download buttons, and no software to install. Files are transferred over HTTPS, processed in isolated job folders and deleted automatically.