Convert PNG to WebP Online Free
Large PNG images are one of the most common reasons websites load slowly. Converting them to WebP often cuts their size by 50 to 80 percent, which improves page speed scores and helps your search rankings.
Unlike JPG, WebP keeps transparent backgrounds, so logos, icons, and product cut-outs can be converted without a visible box behind them. All modern browsers support WebP.
Convert a whole folder of PNGs at once, compare the old and new sizes, and download everything as a ZIP ready to upload.
- No sign-up or watermark
- Processed in your browser
- Batch convert to ZIP
Any format works here, not only PNG. See all formats in the Image Converter.
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How to Use
How to Convert PNG to WebP
Convert images in five simple steps. No software to install and no account to create.
- 1
Step 1: Upload Your Images
Drag and drop, tap Browse Files, or take a photo on your phone. Add up to 50 images of any supported format, up to 20 MB each.
- 2
Step 2: Choose the Output Format
Pick JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, ICO, or PDF in the Convert to menu. Only the options that matter for that format are shown.
- 3
Step 3: Adjust the Options
Set the quality, a background colour for transparent areas, icon sizes, or PDF page size, and decide whether to remove photo metadata.
- 4
Step 4: Convert
Press Convert. Each image is converted on your device, one after another, and you see the old and new file size for each one.
- 5
Step 5: Download
Download files one by one, or all at once as a ZIP. The original file names are kept with the new extension.
Features
Why Choose Our Free Image Converter?
One private tool for every everyday image format, from iPhone photos to website images, icons, and PDFs.
10 Formats
Open JPG, PNG, WebP, HEIC, AVIF, GIF, BMP, TIFF, and ICO, and save as JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, ICO, or PDF.
iPhone HEIC Photos
Turn HEIC photos from an iPhone or iPad into JPG or PNG that open everywhere, the right way up.
Batch Conversion
Convert up to 50 mixed images at once and download them all as a ZIP. One broken file never stops the rest.
Images to PDF
Combine images into one PDF or make one PDF per image, with A4, Letter, or fit-to-image pages and margins.
Transparency Kept
PNG, WebP, AVIF, GIF, TIFF, and ICO keep see-through areas. JPG and BMP get the background colour you choose.
Private by Design
Images are converted in your browser and never uploaded. Photo metadata such as GPS location can be removed.
Quality Control
Choose the quality for JPG, WebP, and AVIF, and see how much smaller or larger each file becomes.
Free, No Watermark
No sign-up, no watermark, and no limit on how often you convert.
One Converter for Every Image Format
Phones, cameras, websites, and design apps all use different image formats. Instead of a separate tool for every pair, ToolCube converts any supported format to any other in one place: open an iPhone HEIC and save a JPG, turn a logo PNG into an ICO favicon, or shrink a large PNG into a WebP for your website.
Fast and Safe on Your Own Device
The conversion runs in a background process inside your browser, so the page stays responsive even with large photos and long batches. Decoders for formats such as HEIC, AVIF, and TIFF load only when you need them, and nothing is ever sent to a server.
FAQ
Frequently Asked Questions
Answers to common questions about converting PNG to WebP.
Does WebP keep the transparent background of my PNG?
Yes. WebP supports full transparency, so your images look the same on any background colour.
What quality should I use for website images?
A quality of 75 to 85 gives a good balance for most photos and graphics. For images with fine text, use 90 or higher.
Do all browsers support WebP?
Yes. Chrome, Edge, Firefox, and Safari (from version 14) all display WebP images, which covers almost every visitor today.
Will WordPress accept WebP files?
Yes. WordPress has supported WebP uploads since version 5.8, and most other website builders support them too.