离线 · 无上传 · 浏览器本地完成Offline · no uploads · runs in the browser
WebP 转换：全部可用目标WebP conversions: every available target
WebP 是浏览器原生支持的现代图片格式，可以是无损也可以是有损，还可能是多帧动画。这份工具能把它当作源：解码成画布后转成 PNG / JPEG / PDF；但写进文档的路线只嵌入原始字节，接收方能不能显示取决于那个工具。WebP is a modern image format the browser handles natively; it can be lossless or lossy, and it can carry several frames. This tool uses it as a source — decoded onto a canvas for PNG, JPEG or PDF — while document routes embed the original bytes, leaving display support to the receiving tool.
全部可用目标Every available target
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MarkdownMarkdown 2 步2 steps
WebPWebP HTMLHTML MarkdownMarkdown
一行自包含的图片语法，负载是整份 .webp 的 base64：不减帧、不重编码，透明照旧；能否显示与是否播放都由阅读器决定。全程离线。One self-contained image tag whose base64 is the whole .webp: no frame loss, no re-encode, alpha untouched. Display and playback are the reader’s call.
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HTMLHTML 1 步1 step
WebPWebP HTMLHTML
整份 .webp 以 data URI 原样内嵌进一份能直接打开的网页：不解码、不重编码，透明与动画数据都在。全程离线，文件不出本机。The whole .webp goes into a page you can open as a data URI, byte for byte: no decode, no re-encode, so alpha and the animation data stay put.
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Word (.docx)Word (.docx) 2 步2 steps
WebPWebP HTMLHTML Word (.docx)Word (.docx)
在浏览器里把 .webp 放进一份 .docx：图片字节原样内嵌，不另附文件、不发请求。图不是文字，Word 显示与否取决于它的 WebP 支持。The WebP goes inside the .docx as raw bytes — no file alongside, nothing fetched. Whether Word paints a WebP depends on its own support.
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PDFPDF 1 步1 step
WebPWebP PDFPDF
在浏览器里把 .webp 铺成一页 PDF：页面尺寸按图片像素换算，透明铺白，整页只有图像、没有文字层。Put a .webp on a PDF page sized to its pixels, in your browser. Transparency is flattened onto white and no text layer is added.
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PNGPNG 1 步1 step
WebPWebP PNGPNG
在浏览器里把 .webp 解码并重编码为 PNG，透明通道原样保留；可批量、可限制最长边，文件不上传。Decode a .webp in your browser and re-encode it as a PNG with transparency intact. Batch it, cap the long edge, no upload.
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JPEGJPEG 1 步1 step
WebPWebP JPEGJPEG
浏览器本地把 .webp 解码重编为 JPEG：透明铺纯白，质量档与目标体积照旧，一批最多 200 张。动图 WebP 只会留下一帧。Decode .webp and re-encode as JPEG locally: alpha flattens onto white, quality and target size as usual, 200 per batch. Animated WebP yields one frame.
界面上置灰的目标Targets the picker greys out
下面这些目标在路径图上可达，但语义上无效，工作台会把它们置灰并给出原因，而不是让你点下去得到一个空文件。These targets are reachable in the graph but semantically invalid, so the workbench greys them out with the same reason instead of letting you click through to an empty file.
- Excel (.xlsx)：图片无法转换为文本或表格数据（需 OCR，暂不支持）Excel (.xlsx): Images cannot become text or tabular data (needs OCR, not supported)
- CSV：图片无法转换为文本或表格数据（需 OCR，暂不支持）CSV: Images cannot become text or tabular data (needs OCR, not supported)
- 纯文本 (TXT)：图片无法转换为文本或表格数据（需 OCR，暂不支持）plain text (TXT): Images cannot become text or tabular data (needs OCR, not supported)
- JSON：图片无法转换为文本或表格数据（需 OCR，暂不支持）JSON: Images cannot become text or tabular data (needs OCR, not supported)
这个来源格式的共同限制What holds for every target from this source
- 没有 OCR；图片到 TXT、CSV、JSON、Excel 的组合被置灰并说明No OCR; image to TXT, CSV, JSON and Excel are greyed out with a reason
- 转 PNG 是无损封装，不会恢复有损 WebP 已经丢掉的细节PNG is a lossless container and does not restore detail a lossy WebP already lost
- 多帧 WebP 会按单帧处理；动画与后续帧不保留（本轮不做动图输入）A multi-frame WebP is treated as one frame; the animation and later frames are not kept (animated input is out of scope this round)
- 文档路线嵌入原始 WebP 字节，Word 与多数 Markdown 阅读器对它的支持并不一致Document routes embed the original WebP bytes, and support in Word and most Markdown readers is inconsistent
常见问题Questions people actually ask
WebP 转 PNG 会更大吗？Will WebP to PNG be larger?
通常会。PNG 是无损容器，WebP 的压缩优势在这里消失；若原图很大，输出可能显著变大。需要体积时请转 JPEG，或保留 WebP。Usually yes. PNG is a lossless container, so WebP’s compression advantage disappears and a large source can produce a much larger file. For size, choose JPEG or keep the WebP.
能转多帧 WebP 动画吗？Can an animated WebP be converted?
只会取一帧。当前版本没有把多帧 WebP 当作动画输入，也不提供丢帧披露；需要保留动画时请留在 WebP。Only one frame is taken. This version does not treat multi-frame WebP as animated input and gives no frame-loss disclosure; keep it as WebP to preserve the animation.
WebP 放进 Word 会显示吗？Will a WebP display inside Word?
取决于 Word 的版本与平台。转换器按原始字节嵌入，不转码；要保证显示，先转成 PNG 或 JPEG 再写入文档。It depends on the Word version and platform. The converter embeds the original bytes without transcoding; to guarantee display, convert to PNG or JPEG before building the document.
转 PDF 的页面尺寸怎么定？How is the PDF page size decided?
取图片自身的宽高（按 96 DPI 换算成点），整张图铺满一页，透明处铺白；不是 A4，也不裁切。From the image’s own dimensions at 96 DPI: the picture fills one page with transparency filled white. It is not A4 and nothing is cropped.
不需要账号，也不需要联网：装好扩展后点图标，在新标签页里打开工作台，文件从磁盘直接选。No account and no network: install the extension, click its icon, and the workbench opens in a new tab reading straight off your disk.
从 Chrome 应用商店安装Install from the Chrome Web Store 安装步骤Install steps GitHub 源码Source on GitHub
最后更新 2026-10-21Last updated: 2026-10-21