Convert JPG to PNG
To convert JPG to PNG, add your .jpg file below and press the button: it's processed on your own device and you download the result, with nothing uploaded. It's free, needs no account, and works with files up to 500MB.
Tip: add several files at once to convert them in one go and download them as a ZIP.
About converting JPG to PNG
JPG (.jpg) files can be converted to PNG entirely in your browser — no software to install, no file upload, and no account required. The conversion runs on the browser's own Canvas API directly on your device.
Technical comparison
| JPG | PNG | |
|---|---|---|
| Category | image | image |
| Compression type | Lossy (DCT-based) | Lossless (DEFLATE) |
| Typical file size | Small — a fraction of an equivalent PNG for photographic content | Moderate — larger than JPEG for photos, smaller for flat-color graphics |
| Transparency support | No | Yes (full 8-bit alpha channel) |
How to convert JPG to PNG privately
Every step below runs on the browser's own Canvas API inside this browser tab. Your .jpg file is never uploaded to a server — there's no network request carrying it anywhere.
Add your JPG file
Drag and drop, or click to select, a file (.jpg). It's read straight from disk into browser memory — no upload step exists.
Convert locally
FreePrivateConvert converts it to PNG using the browser's own Canvas API, entirely within this browser tab.
Download the result
Save your converted .png file. It only ever existed in this tab's memory — closing the tab without downloading discards it completely.
Convert JPG to PNG with ffmpeg (command line)
Prefer the terminal? This page uses your browser's built-in image engine; the equivalent ffmpeg command is:
ffmpeg -i input.jpg output.png- -i input.jpg
- Your JPG file.
- output.png
- The PNG file to create. ffmpeg picks the container from this extension.
Don't have ffmpeg installed? You don't need it: use the converter at the top of this page. It runs this conversion on your own device, and your file is never uploaded.
FAQ
- Is my file uploaded anywhere?
- No. Your file is read and processed inside this browser tab and never leaves your device. You can confirm it in your browser's developer tools: the Network tab shows no upload.
- Does converting JPG to PNG reduce quality?
- No further loss: PNG is lossless, so the result looks exactly like the decoded JPG, though the file is usually larger and any compression artifacts already in the source stay.
- Is there a file size limit?
- Yes: 500MB per file. There's no account and no limit on how many files you convert.
- What's the difference between JPG and PNG?
- JPG (Joint Photographic Experts Group) and PNG (Portable Network Graphics) store data differently. JPG: lossy (DCT-based). PNG: lossless (DEFLATE). PNG is a lossless, compressed image format with full alpha transparency — the standard choice for graphics, screenshots, and anything with sharp edges or text.
- Why convert JPG to PNG?
- Common uses for PNG: Screenshots; Logos and icons; UI/design assets requiring transparency. Lossless DEFLATE compression means no artifacts around text, logos, or hard edges, unlike JPEG.
- What MIME type does a .png file use?
- image/png, the standard type for Portable Network Graphics.
- What is the ffmpeg command to convert JPG to PNG?
- Run: ffmpeg -i input.jpg output.png. This page does the same conversion with your browser's built-in image engine, so you don't need to install ffmpeg.
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