WebPをPNGに変換
最大互換性のためWebP画像を即座にPNGに変換。100%無料・プライベート・ブラウザで動作。
プライベート＆安全
ファイルがデバイスから送信されることはありません。すべての処理はローカルのブラウザ内で行われます。
完全無料
サブスクなし、透かしなし、制限なし。
バッチ変換
個別の進捗状況を追跡しながら、数十のファイルを一度に変換できます。
超高速
デバイスのハードウェアで動作。
WebPをPNGに変換とは？
Our free WebP to PNG converter transforms your WebP images into universally compatible PNG files entirely within your browser. No uploads, no registration, and no file size limits — just instant, private conversion.
WebP is an excellent modern format for the web, but many applications — from older image editors to email clients and social media schedulers — still do not support it. Converting to PNG gives you the widest possible compatibility while maintaining lossless quality. PNG also natively supports transparency, so any transparent areas in your WebP file will be perfectly preserved.
Whether you received a WebP image from a website and need to edit it in Photoshop, or you need to attach it to an email that doesn't support WebP, this tool handles the conversion instantly with zero quality loss.
計算方法
- Drag your WebP files onto the upload area, or click "Browse files" to select them from your device.
- The tool reads your WebP image data locally in your browser.
- Click "Convert" — each WebP is rendered to a canvas and exported as lossless PNG.
- Click "Download" next to each image, or use "Download All" to batch-download all outputs.
- Open your PNG files in any application — they'll work in all image editors, viewers, and platforms.
主な利点
- Universal compatibility — PNG works in every application, browser, and operating system
- Lossless conversion — no quality is sacrificed when converting from WebP to PNG
- Transparency preserved — alpha channels are fully maintained in the output PNG
- Complete privacy — your images never leave your browser or device
- Batch conversion — convert as many WebP files as you need simultaneously
- Free forever with no watermarks, limits, or subscription fees
よくある使用例
- Editing WebP screenshots or images in software that doesn't support WebP (Photoshop CS, GIMP, etc.)
- Attaching images to emails or documents when the recipient's software requires PNG
- Converting WebP product images from e-commerce sites for use in offline marketing materials
- Uploading images to social media platforms that don't support WebP
- Archiving web images in a universally supported lossless format
重要な用語の説明
- WebP
- Google's modern image format offering smaller file sizes than PNG/JPG — supported by all modern browsers but not all native apps
- PNG (Portable Network Graphics)
- A lossless raster image format supporting full transparency — universally compatible with all platforms
- Alpha channel
- The transparency layer in an image — PNG supports 256 levels of transparency
- Lossless conversion
- Converting between formats without any quality reduction — all pixel data is preserved exactly
- MIME type
- The content type identifier for files — PNG uses image/png, WebP uses image/webp
プロのヒント
- If you only need the image for web use, stay in WebP — it loads faster than PNG on websites
- Use WebP to PNG when you need to edit the image in software that doesn't support WebP
- PNG files will typically be larger than the original WebP — this is normal since PNG is lossless and WebP uses more aggressive compression
- For photos without transparency, consider WebP to JPG instead if you need a smaller file size
- The converted PNG is identical in quality to the original WebP — there is no "downgrade" in visual fidelity
About the PNG Format
PNG (Portable Network Graphics) was created in 1995 as a free, open-source alternative to the patented GIF format. It uses lossless compression, meaning image quality is perfectly preserved regardless of how many times you save or re-export the file. PNG supports full transparency (alpha channel) with 256 levels of opacity, making it ideal for logos, icons, and interface graphics. Unlike JPEG, PNG does not introduce compression artifacts, making it the preferred format for screenshots, text-heavy images, and graphics requiring pixel-perfect accuracy. PNG is universally supported by every operating system, browser, image editor, and design tool in existence — making it the most compatible image format available.
よくある質問
Why would I need to convert WebP to PNG?↓
Many older applications, email clients, and editing tools do not support WebP. Converting to PNG gives you universal compatibility while preserving lossless quality and transparency.
Does converting WebP to PNG preserve transparency?↓
Yes. PNG supports full alpha channel transparency. If your WebP image has a transparent background, it will be preserved perfectly in the PNG output.
Are my images kept private?↓
Yes — all conversion happens locally in your browser. Your images are never uploaded to any server, ensuring complete privacy.
Will there be any quality loss when converting WebP to PNG?↓
No. PNG uses lossless compression, so your converted PNG will be visually identical to the original WebP. There is no quality degradation.
Can I batch convert multiple WebP files at once?↓
Yes. Simply drag in multiple WebP files and they will all be converted simultaneously, with individual download buttons for each output PNG.
What is the maximum file size I can convert?↓
There is no hard file size limit set by us. Very large images may be slow to convert since all processing runs in your browser's memory.