JPG to PNG
Convert JPG images to PNG – lossless
Why JPG → PNG?
Convert JPG to PNG to enable further editing without quality loss – especially important for logos, screenshots, and graphics with text.
Frequently Asked Questions
Why convert JPG to PNG?
PNG is a lossless format, ideal for images with text, logos, or sharp edges. If you want to edit a JPG further without accumulating quality loss, PNG is the better choice.
Does the image improve through conversion?
No, a once-lossy compressed JPG cannot be restored. However, PNG prevents further quality loss during future edits.
When should I stick with JPG?
For photos you only want to view or share, JPG is the better choice – smaller file, sufficient quality. PNG is larger and mainly worthwhile for graphics and text.
Are my images safe?
Yes, the conversion happens entirely locally in your browser. No upload, no servers, 100% private.
About PNG
PNG (Portable Network Graphics) was released in 1996 as an open standard and developed as a patent-free alternative to GIF after Unisys demanded licensing fees for the LZW algorithm used in GIF in 1994. PNG uses lossless compression based on the Deflate algorithm and supports up to 16 bits per channel as well as full-color transparency through a dedicated alpha channel. The format is particularly suited for graphics with sharp edges, text, logos, and screenshots – anywhere JPEG would produce artifacts through its lossy compression. PNG does not support animation; this gap is filled by the unofficial APNG format, which is supported by most browsers. The interlaced variant (Adam7) enables progressive loading where a coarse preview becomes visible even with minimal data transferred. PNG is the de facto standard for lossless web graphics and is supported by all browsers, operating systems, and image editing programs. For photography, however, PNG is inefficient since file sizes are significantly larger compared to JPEG or WebP, which is why PNG is primarily used for graphics and screenshots.
About JPEG
JPEG (Joint Photographic Experts Group) was standardized as ISO 10918 in 1992 and remains the most widely used image format for photographs worldwide. Its lossy compression is based on the discrete cosine transform (DCT) and typically achieves compression ratios of 10:1 to 20:1 with barely perceptible quality loss. The algorithm was developed starting in 1986 by a working group led by Hiroshi Yasuda and quickly became the standard for web images, digital photography, and social media platforms. JPG files support 8-bit color channels in RGB color space and embedded EXIF metadata containing camera settings, GPS data, and timestamps. The format does not support transparency or animation and allows only one color space per image – limitations that are rarely relevant for its primary use as a photo format. With repeated compression, quality degrades progressively due to generation loss, making JPG unsuitable for editing and better suited as a final output format. The .jpg extension instead of .jpeg dates back to the 8.3 character limitation of early Windows file systems. JPEG XL was proposed as a successor in 2021 but has so far failed to gain meaningful market acceptance against WebP and AVIF.
Why convert JPG → PNG?
JPG (JPEG) is the most widely used image format worldwide, supported by virtually every camera, browser, and image app. It uses lossy DCT compression that degrades quality with each save and doesn't support transparency. Converting to PNG is required when you need lossless compression (PNG for screenshots/graphics), transparency support, or want to use a modern format with better compression like AVIF or WebP. For archiving and professional editing, PNG is often the better choice since it produces no compression artifacts and maintains quality across repeated saves.