PNG stands for portable network graphics. It is the raster graphics format associated with the .png filename extension. Unlike GIF format, the limitation of 256 colors does not hold with the PNG format. In fact this among other reasons was the motivation behind development of the PNG format to improve upon the GIF format. The PNG format however uses a single image format and thus does not support animations. Because the format was engineered to ease the distribution of graphic files across computer networks it is also not well suited for professional graphics.
WebP is a popular image format that has been developed by Google in 2010. The WebP technology deploys features of both the lossy and the lossless compression techniques that are totally in contrast to each other. The lossy compression technique is an irreversible data compression whereas lossless compression technique involves reversible data compression. However, the lossy compression technique is very useful in significantly reducing the file size for easy transfer and handling as well as to save on storage space. Compared to other image formats like JPEG and PNG, the WebP image formats retain the high quality despite allowing for nearly 34% more compression. This technology is useful as a large number of images can be viewed one after the other across the world at very high speed. There is a standalone library called libwebp in the GIT Repository that can be used as a reference for implementation of the WebP specifications. This library provides the necessary commands for encoding and decoding.
FreeFileConvert uses tuned encoding for PNG to WEBP conversions, preserving clarity while trimming file size. Finished images open instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload PNG files from desktop or tablet, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized WEBP results on any device you rely on.
Process up to 5 files sized 1024 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent WEBP images with dependable progress tracking.
The PNG formation become a published ISO standard in 2004 as ISO/IEC 15948, although it was formally accepted for use by the internet engineering steering group in 1996. The PNG format has broad support for various color palettes including 24 bit RGB, 32 RGBA, and grayscale with optional support for transparency. The lossless data compression method used by PNG is DEFLATE.
The algorithm for lossy compression technique in WebP images is based on the structure found in the VP8 video format which uses the intra-frame coding mechanism. The RIFF (Resource Interchange File Format) is used as the container format for these files. The lossless compression of WebP comprises of advanced compression techniques like using dedicated codes to entropy channels of different colors. This technique exploits the 2D or the 2 Dimensional localities for referencing distances in a backward order and maintains a color cache that has all the colors that have been used recently. It comprises of complementary basic techniques like Color Indexing Transformation, Huffman coding and Dictionary coding. There is almost a 19% to 64% reduction in image size depending on the source image format and whether the image is being converted to a lossy or a lossless format in WebP.
Upload your image file in the PNG format from your device.
Select WEBP as the output format and click Convert. Adjust optional settings if needed.
Download the converted image file. Each file stays available for up to 5 downloads.
WebP can shrink PNG graphics and photos dramatically for websites while keeping edges and text looking sharp—ideal before uploading to a CMS or CDN.
Yes for typical WebP output with alpha. Confirm the result in a browser if the graphic uses soft shadows or partial opacity.
Almost always for photos and complex images. Tiny 1-bit icons may not shrink much; compare file sizes if every byte matters.
Upload your PNG files, select WebP, and convert. Download the results for use on the web.
Yes within free-tier limits. Finished files remain available for up to 5 downloads.