Convert JPG, PNG, WebP, AVIF, GIF, BMP, and ICO images in batches, then adjust quality and dimensions to optimize file size.
JPG, PNG, WebP, GIF, BMP, AVIF, ICO (up to 100 MB)
BMP is uncompressed (typically 24-bit, or 32-bit with transparency); PNG and GIF are lossless; ICO is automatically resized to a maximum of 256×256. A compressed source image may become larger when converted to high-quality WebP or JPG.
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Changing an image extension is not the same as choosing the right encoding. The best output depends on transparency, photographic detail, browser compatibility, animation, and the size you need to deliver. This converter works locally and lets you combine format conversion, quality control, and resizing in one pass.
WebP is a strong default for modern web images because it supports transparency and usually reduces photographic or graphic assets well. AVIF can be smaller at similar visual quality but encoding is heavier and compatibility requirements should be checked for the target environment.
JPEG is well suited to photographs and continuous-tone images when a lossy output is acceptable. PNG is better for screenshots, diagrams, text-heavy graphics, and images that must preserve transparency. Converting a transparent PNG to JPEG necessarily replaces transparency with an opaque background.
A large image often gains more from reducing pixel dimensions than from aggressively lowering quality. If the final display is 1200px wide, exporting an 8000px source at low quality wastes memory and can still produce a larger file than a properly resized image at a healthier quality setting.