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PNG to WebP

PNG → WebP: smaller textures and web assets with transparency preserved, ideal for modern browsers and online 3D.

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About This Tool

Convert PNG to WebP for smaller downloads in websites and browser-based 3D viewers. WebP supports efficient compression and transparency, ideal for UI overlays and material maps on the web. Adjust quality to balance size and fidelity. All processing is done locally in your browser.

Tips

  • 1WebP with transparency is often 25-35% smaller than PNG
  • 2Great for web 3D viewers and glTF-related image workflows
  • 3Transparent PNG converts to WebP with alpha preserved

About Configuration Options

Output Dimensions

Output Dimensions

Set the output width and height. Square presets (e.g. 1024×1024) suit texture workflows; use custom with optional aspect-ratio lock to keep source proportions. Format-conversion pages default to the source size.

Lock aspect ratio

Defaulton

When enabled in custom size mode, changing width or height automatically scales the other side to match the source image proportions. Disable to set width and height independently.

Quality

Quality

Default90%

Range10% – 100% · step 5%

Lossy compression quality for JPEG and WebP. Higher values yield better quality but larger files.

Format Information

Input format

Extension:
png
Full Name:
Portable Network Graphics
Type:
Image
Format:
PNG
Tools:
Photoshop、GIMP、Krita、Paint.NET
Open With:
Image Editor、Windows Photos、Preview (Mac)
Description:
PNG is a lossless raster format with 8-bit alpha transparency, offering sharp edges and no artifacts. It is preferred for converting silhouettes to 3D models, avoiding color banding and producing cleaner meshes than JPEG. The trade-off: larger file sizes than JPEG, no CMYK support. For 3D conversion: use 16-bit grayscale for height maps (up to 4096×4096); transparent backgrounds are auto-detected, so manual masking is unnecessary.

Notes:

  • Maximum supported resolution: 4096×4096 pixels
  • Transparent backgrounds are automatically detected and handled

Supported Features:

  • Lossless compression preserves image quality
  • Alpha channel transparency for precise contour extraction
  • Wide color support (24-bit RGB + 8-bit alpha)

Output format

Extension:
webp
Full Name:
WebP (Google)
Type:
Image
Format:
WebP
Tools:
Photoshop、GIMP、Krita、Paint.NET
Open With:
Image Editor、Windows Photos、Preview (Mac)
Description:
WebP is a modern image format developed by Google, supporting both lossy and lossless compression as well as an alpha channel. Under the same visual quality, file sizes are typically 25-35% smaller than JPEG or PNG, making it a mainstream choice for web performance optimization. WebP browser compatibility is now very mature, but it may still not be supported in older systems and some professional software. When used as a 3D texture or input for image-to-3D conversion, its performance is comparable to PNG; just be aware of compression artifacts in lossy mode.

Notes:

  • Maximum supported resolution: 4096×4096 pixels
  • Transparent backgrounds are supported in lossless mode

Supported Features:

  • Lossy and lossless compression modes
  • Alpha channel transparency in lossless mode
  • Smaller file sizes than legacy formats

How to Use

1

Import Image File

Drop a PNG, JPEG, WebP, BMP, or KTX2 texture/image file. KTX2 inputs are automatically decoded to PNG for conversion.

2

Configure Conversion Parameters

Choose output format when available (PNG, JPEG, WebP, KTX2), set texture dimensions, and adjust quality. For KTX2, pick ETC1S or UASTC.

3

Convert and Download

Click Convert to process the image or texture. The file downloads automatically in your chosen format, ready for web, design, or 3D pipelines.

Frequently Asked Questions

View all FAQs
Q

What is WebP and why convert from PNG?

A

WebP is a modern format with strong compression versus PNG. Converting PNG to WebP can cut size by 25-80% while keeping quality and transparency, useful for web pages and online 3D texture delivery.

Q

Is WebP transparency preserved?

A

Yes. WebP supports alpha transparency just like PNG. Transparent areas are preserved in the output.

Q

What's the difference between lossy and lossless WebP?

A

Lossless WebP preserves the exact image data like PNG. Lossy WebP achieves smaller files by discarding some visual information, controlled by the quality slider.

Q

Is WebP widely supported?

A

Yes. WebP is supported by all modern browsers including Chrome, Firefox, Safari, and Edge. It's the recommended format for web images.

Q

Is WebP used in 3D pipelines?

A

Yes, especially for web and runtime delivery where download size matters. Some DCC tools and engines still prefer PNG or KTX2 for authoring and GPU textures: convert as your target pipeline requires.

Q

Can I create an animated WebP with this tool?

A

No. The converter outputs a single static image and does not encode animation. For animated content, use a dedicated tool that supports WebP animation.