Image Converter handles the format-switching problem in its most general form: any of seven common input formats — JPG, PNG, WebP, GIF, BMP, SVG, and AVIF — converted to any of three output formats (JPG, PNG, or WebP), in single files or entire batches, all inside your browser tab. Where this site's other image tools focus on one specific conversion pair (WebP to JPG, JPG to PNG, and so on) tuned with format-specific messaging and defaults, this tool is the flexible, multi-format hub for when you need to move between formats you don't use every day, or when you're dealing with a mixed folder of images in different formats that all need to end up the same.
Each of the seven input formats exists for a different reason, and understanding those reasons clarifies what happens during conversion. JPG uses lossy DCT-based compression tuned for photographs; PNG is lossless and built for graphics, screenshots, and anything needing transparency; WebP, Google's 2010 format, applies prediction-based compression that typically beats JPEG by 25-35% at equivalent visual quality; GIF is a legacy format limited to 256 colors per frame, mostly relevant today for simple animations; BMP is an uncompressed Windows-native raster format that produces large files with zero quality loss; SVG is not a raster format at all but an XML-based vector description, which is why converting it means rasterizing (rendering the vector shapes into fixed pixels) rather than simply re-encoding; and AVIF, based on the AV1 video codec, is the newest widely supported format, generally out-compressing even WebP at a given quality level, though with somewhat less universal software support as of the mid-2020s.
Converting between these isn't just a container swap — it's fundamentally a decode-then-re-encode operation. The source image, whatever its original format and compression scheme, is fully decoded into raw, uncompressed pixel data by the browser's native image engine (the exact code path a browser uses to display any image on any webpage), drawn onto an in-memory HTML canvas at full native resolution, and then re-encoded from that clean pixel data into the target format using the compression scheme and quality level you choose. That's worth knowing because it means the theoretical best-case output quality is bounded by whatever the input already contained: converting a heavily compressed, artifact-ridden JPG to a lossless PNG doesn't retroactively remove those artifacts, it just locks them in without adding new ones.
This tool is also where format-specific quirks surface most visibly, because so many different source and destination combinations pass through it. Converting anything with transparency (PNG, WebP, GIF) to JPG discards the alpha channel entirely, flattening transparent pixels onto white — a one-way, unrecoverable step if the transparency mattered. Converting an animated GIF or WebP to a static format keeps only the first frame, since none of the three output formats here support animation. And converting SVG rasterizes it at whatever dimensions the SVG file itself specifies, so a vector logo designed at 100×100 pixels will convert to a 100×100 raster image regardless of how large the original vector could theoretically scale — if you need a bigger output, resize it with Resize Image after converting, since the SVG's own width/height attributes only take effect before conversion.
