100% local
IMAGE

Convert PNG
to WEBP

Significantly smaller files.

PNG is a lossless format that prioritizes fidelity over size. Converting to WEBP introduces modern compression that typically reduces file size by an order of magnitude with no perceptible difference at normal playback or viewing.

— Drop area

为什么要转换

Why convert PNG to WEBP

01

Significantly smaller files

PNG is a lossless format that prioritizes fidelity over size. Converting to WEBP introduces modern compression that typically reduces file size by an order of magnitude with no perceptible difference at normal playback or viewing.

02

Broader cross-platform support

WEBP is accepted by a wider range of image viewers, editors, and content systems than PNG. The conversion removes a recurring compatibility friction without changing what the file actually contains.

03

Lower storage and bandwidth cost

WEBP files are typically smaller than their PNG counterparts, which reduces hosting, transfer, and storage costs at scale. The savings compound when serving the same content to many recipients.

— 如何转换

三步将 PNG 转为 WEBP.

  1. 01

    打开 LocalConvert

    在任意现代浏览器中访问本页面 —— 无需安装、无需注册、无需插件。

  2. 02

    拖入或选择你的 PNG 文件

    将 PNG 文件拖到放置区域,或点击从设备中选择一个。

  3. 03

    点击转换

    转换完全在你的浏览器中进行。完成后,WEBP 文件会自动下载到你的设备。

质量与保真度

质量与保真度

  • WebP defaults to lossy; use lossless mode for pixel-perfect output.
  • Transparency is preserved on both sides.
  • Typical file-size reduction of 25–40% versus PNG.
透明度 PNG ✓ WEBP ✓
颜色深度 8-bit RGBA (up to 16-bit) 8-bit RGBA
保留元数据

格式规范

格式规范

PNGWEBP
扩展名.png.webp
MIME 类型image/pngimage/webp
推出时间19962010
维护者W3C / PNG GroupGoogle
魔数89 50 4E 47 0D 0A 1A 0A52 49 46 46 ?? ?? ?? ?? 57 45 42 50
规范查看规范 ↗查看规范 ↗

兼容性

这些格式可用的地方

PNG

Windows
原生
macOS
原生
iOS
原生
Android
原生
Chrome
原生
Firefox
原生
Safari
原生
Edge
原生

WEBP

Windows
原生
macOS
原生
iOS
原生
Android
原生
Chrome
原生
Firefox
原生
Safari
原生
Edge
原生

为什么选 LocalConvert

LocalConvert 的对比

CategoryLocalConvert云端转换器
隐私Files never leave your device. The whole pipeline runs in your browser via WebAssembly.Files travel to a remote server, sit in queue storage, and may be retained for analytics or moderation.
费用Free, no signup, no daily quotas.Often free for small files; paid tiers for batch / large / commercial use.
限制Limited only by your device's memory and CPU. Multi-GB files OK on desktop.Typical 100 MB to 1 GB per-file caps, plus rate limits.
— The formats
From · PNG

Portable Network Graphics

A lossless raster format with alpha transparency, ideal for screenshots, icons, and graphics where pixel-perfect detail matters.

Typical uses
Screenshots, logos, UI assets, web graphics with transparency.

To · WEBP

Web Picture format

A modern image format from Google offering ~25–35% smaller files than JPEG and PNG, with both lossy and lossless modes and alpha support.

Typical uses
Web-first imagery, faster page loads, modern browsers.

— FAQ

常见问题.

PNG 转 WEBP 是免费的吗?

是的。LocalConvert 完全免费,无需注册,没有每文件或每日的限制。

我的文件会被上传到任何地方吗?

不会。PNG 到 WEBP 的转换完全在你的浏览器内通过 WebAssembly 完成 —— 文件永远不会离开你的设备。

最大文件大小是多少?

没有固定上限 —— 实际限制取决于设备的可用内存。在低内存设备上,非常大的文件可能耗时较长或失败。

可以离线使用吗?

可以 —— 页面加载后,PNG 到 WEBP 的转换无需联网即可工作。重新打开页面一次即可缓存。

转换会保留质量吗?

LocalConvert 使用业界标准工具(FFmpeg、ImageMagick、Pandoc)—— 质量与专业人员在命令行中使用的相当。有损格式在每次重新编码时仍会损失一些质量。

— Related

或转换这些.

浏览所有转换
参考资料

格式参考资料

Last verified:

100% 本地转换.

PNG to WEBP is processed in your browser with WebAssembly. No upload, no tracking, no limits. Your file never leaves your device.