Convert WebP to PNG — Free Online, Browser-Only
Convert WebP images to PNG for compatibility with older tools, social platforms, and apps that reject WebP. Browser-only.
About WebP to PNG Converter
Converting WebP to PNG is the compatibility move — many tools (older Photoshop versions, some social platforms, certain print services, Slack/Discord uploads in some configs) still don't accept WebP. PNG is universally supported. The conversion is lossless: WebP's alpha and pixel data round-trip exactly to PNG. The ZTools WebP-to-PNG tool decodes via the browser's Canvas, then re-encodes as PNG. Single file or batch, no upload, no quota.
Use cases
- Upload to a service that rejects WebP. Saved an image as WebP from a website; need to attach to LinkedIn, an older CMS, a print service. Convert to PNG first.
- Edit in legacy software. Photoshop CS6 doesn't open WebP. Convert to PNG, edit, save back as WebP if needed.
- Sharing on Slack / Discord (older clients). Some workspace setups silently drop WebP uploads. PNG always works.
- Embedding in PDF / Word. Microsoft Word inserts WebP only since recent versions. PNG is bulletproof for older Office installs.
How it works
- Drop WebP file. Drag-drop or pick. Loaded into <img>, drawn to canvas at native dimensions.
- Encode as PNG. canvas.toBlob("image/png") produces lossless PNG bytes.
- Download. Single .png file. Filename matches source (foo.webp → foo.png).
Examples
Input: 512×512 WebP with transparency
Output: Output: 512×512 PNG with the same alpha channel. Pixel-identical to the WebP's rendered output.
Input: Lossy WebP
Output: Decoded to RGBA pixels (the WebP's lossy compression has already happened); PNG output preserves those pixels exactly. PNG file is typically 2-4x larger because PNG can't use lossy techniques.
Input: Animated WebP
Output: Output is a single frame (the first one). Animated WebP → APNG conversion needs a dedicated tool.
Frequently asked questions
Why is the PNG larger than the WebP?
PNG uses lossless DEFLATE compression; WebP can use lossy + better lossless codecs. Going from a small lossy WebP to PNG always grows the file 2-4x. Going from a lossless WebP to PNG grows it ~25-35%.
Does it preserve transparency?
Yes — PNG supports alpha exactly the same way WebP does. Round-trip is lossless visually.
Can it convert animated WebP?
Single frame only via canvas. For animated WebP → APNG, use a CLI tool like webpmux + apngasm.
What about colour profile?
sRGB is the default for both formats and is preserved. Embedded ICC profiles can be stripped on encode.
Privacy?
Browser-only conversion. WebP never uploaded.
Pro tips
- For batch conversion, pick "PNG" output and zip download — single click instead of 50 saves.
- If the upstream service accepts WebP, don't convert — PNG is just bigger.
- For animated WebP, convert frame-by-frame and reassemble in a GIF / APNG tool.
- Filenames default to base.png — rename in batch if you need versioning.
Reviewed by Ahsan Mahmood · Last updated 2026-05-06 · Part of ZTools.
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