Image converter · runs 100% in your browser
JPEG to PNG Converter
Convert JPEG images to PNG entirely in your browser. JPEG is same format as JPG; the formal extension and MIME spelling; PNG is lossless, supports transparency, well-supported everywhere. The conversion runs locally using the Canvas API — your file is decoded, re-encoded, and offered as a download without ever touching a server.
How to use
- Drop your JPEG file onto the dropzone (or click to browse).
- The converter decodes the source image entirely in your browser using the Canvas API.
- If the target format supports it, you can adjust quality before encoding.
- Click Download to save the PNG file to your device.
FAQ
Will converting JPEG to PNG restore lost detail?
No. JPEG is a lossy format, so any compression artifacts in the source will remain in the PNG output. The converter just changes the encoding container — it cannot recover detail that was thrown away when the JPEG was first saved.
Is the JPEG to PNG converter free?
Yes. The full converter catalog is free. There is no upgrade tier, no quota, no watermark, and no signup.
Do my files upload to a server?
No. Conversion runs entirely in your browser. Open the Network tab in DevTools while you convert — you will not see your file leaving the page.
Why convert JPEG to PNG?
JPEG is same format as JPG; the formal extension and MIME spelling. PNG is lossless, supports transparency, well-supported everywhere. Converting between them is useful when the destination platform expects PNG or when you want the trade-offs that PNG offers.
What is the maximum file size?
Whatever your browser can hold in memory. On a modern desktop browser, several hundred megabytes is usually fine; on mobile, expect tighter limits.