Why Convert JPG to PNG?
JPEG is an efficient, lossy compression format best suited for general photography where microscopic details can be discarded. However, editing a JPEG repeatedly leads to generational degradation and visible compression artifacts. Converting your JPG to PNG creates an uncompressed, lossless container ideal for editing, archiving, graphic design, and clean web displays.
Zero Server Uploads
Unlike standard web converters that upload your photos to unknown cloud servers, OnlyFiles performs the full conversion right in your browser tab using your machine's hardware.
Lossless Fidelity
Your JPEG pixels are cleanly decoded and mapped directly into PNG raster scanlines without re-introducing compression noise.
100% Offline Capable
The conversion scripts run locally. Once this page is opened in your browser, you do not even need an active internet connection to convert files.
No Daily Limits
Convert as many photos as you need with zero watermarks and zero registration requirements.