WebP 파일은 VP8 또는 VP8L 이미지 데이터와 RIFF를 기반으로 하는 컨테이너로 구성됩니다. 독립형 libwebp 라이브러리는 WebP 사양의 참조 구현 역할을 하며 Google의 Git 저장소에서 다운로드하거나 tarball로 사용할 수 있습니다.
WebP 지원
WebP는 Google Chrome, Safari, Firefox, Edge, Opera 브라우저 및 기타 여러 도구와 소프트웨어 라이브러리에서 기본적으로 지원됩니다. 개발자는 다양한 이미지 편집 도구에 대한 지원도 추가했습니다.
WebP에는 경량 인코딩 및 디코딩 라이브러리 libwebp, 이미지를 WebP 형식과 주고받는 명령줄 도구 cwebp 및 dwebp, WebP 이미지를 보고, 멀티플렉스하고, 애니메이션 처리하는 도구가 포함되어 있습니다. 전체 소스 코드는 다운로드 페이지에서 확인할 수 있습니다.
[null,null,["최종 업데이트: 2025-08-08(UTC)"],[[["\u003cp\u003eWebP is a modern image format that offers superior lossless and lossy compression for images on the web, resulting in smaller and richer images.\u003c/p\u003e\n"],["\u003cp\u003eWebP lossless images are 26% smaller than PNGs and lossy images are 25-34% smaller than comparable JPEGs at equivalent quality.\u003c/p\u003e\n"],["\u003cp\u003eWebP supports transparency in both lossless and lossy modes, providing significant size reductions compared to PNGs.\u003c/p\u003e\n"],["\u003cp\u003eAnimated WebP images offer reduced file sizes compared to GIFs and APNGs while supporting lossy, lossless, and transparency.\u003c/p\u003e\n"],["\u003cp\u003eWebP is natively supported in major web browsers like Chrome, Safari, Firefox, Edge, and Opera, as well as many other tools and software libraries.\u003c/p\u003e\n"]]],["WebP, a modern image format, offers superior lossless and lossy compression compared to PNGs and JPEGs. Lossless WebP images are 26% smaller than PNGs, and lossy WebP images are 25-34% smaller than JPEGs. WebP supports transparency, even in lossy formats, and animated WebP images. It employs predictive coding for lossy compression and utilizes existing image fragments for lossless compression. Supported by major browsers and tools, WebP includes the `libwebp` library and `cwebp`/`dwebp` conversion tools.\n"],null,["# An image format for the Web\n\nWebP is a modern **image format** that provides superior **lossless and\nlossy** compression for images on the web. Using WebP, webmasters and web\ndevelopers can create smaller, richer images that make the web faster.\n\nWebP lossless images are [26% smaller](/speed/webp/docs/webp_lossless_alpha_study#results) in size compared to PNGs. WebP\nlossy images are [25-34% smaller](/speed/webp/docs/webp_study) than comparable JPEG images at equivalent\n[SSIM](https://en.wikipedia.org/wiki/Structural_similarity) quality index.\n\nLossless WebP **supports transparency** (also known as alpha channel) at a\ncost of just [22% additional bytes](/speed/webp/docs/webp_lossless_alpha_study#results). For cases when lossy RGB compression\nis acceptable, **lossy WebP also supports transparency**, typically providing\n3× smaller file sizes compared to PNG.\n\nLossy, lossless and transparency are all supported in **animated WebP images**,\nwhich can provide reduced sizes compared to GIF and APNG.\n\n- **[More Info for Webmasters](/speed/webp/faq#how_can_i_detect_browser_support_for_webp)**\n\nHow WebP Works\n--------------\n\nLossy WebP compression uses predictive coding to encode an image, the same\nmethod used by the VP8 video codec to compress keyframes in videos. Predictive\ncoding uses the values in neighboring blocks of pixels to predict the values\nin a block, and then encodes only the difference.\n\nLossless WebP compression uses already seen image fragments in order to\nexactly reconstruct new pixels. It can also use a local palette if no\ninteresting match is found.\n\n- **[WebP Compression Techniques in Detail](/speed/webp/docs/compression)**\n\nA WebP file consists of [VP8](https://datatracker.ietf.org/doc/rfc6386/) or [VP8L](/speed/webp/docs/webp_lossless_bitstream_specification) image data, and a container\nbased on [RIFF](/speed/webp/docs/riff_container). The standalone `libwebp` library serves as a reference\nimplementation for the WebP specification, and is available from\n[our git repository](https://www.webmproject.org/code/#libwebp-webp-image-library) or as a [tarball](/speed/webp/download).\n\nWebP Support\n------------\n\nWebP is natively supported in Google Chrome, Safari, Firefox, Edge, the Opera\nbrowser, and by [many other](/speed/webp/faq#which_web_browsers_natively_support_webp) tools and software libraries. Developers have\nalso added support to a variety of image editing tools.\n\nWebP includes the lightweight encoding and decoding library [`libwebp`](/speed/webp/docs/api)\nand the command line tools [`cwebp`](/speed/webp/docs/cwebp) and [`dwebp`](/speed/webp/docs/dwebp) for converting\nimages to and from the WebP format, as well as tools for viewing, muxing and\nanimating WebP images. The full source code is available on the\n[download](/speed/webp/download) page.\n\nWebP Converter Download\n-----------------------\n\nConvert your favorite collection from PNG and JPEG to WebP by downloading the\nprecompiled `cwebp` conversion tool for [Linux, Windows or macOS](/speed/webp/docs/precompiled).\n\nTell us your experience on the project's [mailing list](https://groups.google.com/a/webmproject.org/group/webp-discuss)."]]
