Convert JPEG images to PNG format instantly in your browser. PNG uses lossless compression, preserving every pixel without further quality degradation — ideal when you need to edit images further or add transparency. SizeMyPic processes everything client-side, so your files stay private.
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Supports JPEG, PNG, WebP, and SVG
PNG uses lossless compression, meaning no additional quality is lost during conversion. This is critical for images that will undergo further editing — each JPEG re-save introduces cumulative compression artifacts, while PNG preserves exact pixel data.
JPEG does not support transparency. Converting to PNG gives you 8-bit alpha-channel support, allowing transparent backgrounds for logos, product photos, and overlays used in web design and presentations.
PNG excels with sharp edges, text, and flat colors — where JPEG compression creates visible artifacts. Screenshots, diagrams, UI mockups, and text-heavy images look significantly better in PNG format.
Converting JPEG to PNG preserves the current quality without further degradation, but it cannot restore detail already lost to JPEG compression. The benefit is that PNG uses lossless compression, so the image won't degrade further with re-saves. This makes PNG ideal as a working format for images you plan to edit.
PNG uses lossless compression, which preserves every pixel exactly. JPEG uses lossy compression that discards visual data the human eye is less sensitive to. For photographs, PNG files are typically 5-10x larger than JPEG. Use PNG when you need lossless quality or transparency; use WebP or JPEG when file size is the priority.
Use PNG for images with sharp edges, text, transparency, or flat colors — such as logos, screenshots, diagrams, and UI elements. Use JPEG for photographs and complex images where lossy compression is acceptable. For the best of both worlds, consider WebP, which supports both lossy and lossless modes with smaller file sizes than either JPEG or PNG.