Upload a PNG file, choose optional width, height, compression mode, and quality settings, then start the conversion. When processing finishes, download the converted .webp file.
Free PNG to WebP Converter
Convert one PNG image to WebP with optional resize, lossy, lossless, and quality settings.
What This PNG to WebP Converter Does
This tool re-encodes a PNG image as a real WebP file. It does not just rename the file extension. The uploaded PNG is converted into WebP image data so the result can be used in browsers, CMS media libraries, page builders, and other workflows that accept .webp files.
The converter gives you practical export controls before conversion:
| Setting | What it changes | When to use it |
|---|---|---|
| Width and height | Resizes the WebP output during conversion | Create a display-size file instead of keeping an oversized PNG |
| Lossy mode | Uses adjustable WebP compression | Smaller website images, cards, thumbnails, and content graphics |
| Lossless mode | Avoids lossy WebP compression | Logos, icons, screenshots, text-heavy images, and sharper graphics |
| Quality 60-70 | Prioritizes smaller files | Preview images, thumbnails, and non-critical graphics |
| Quality 80 | Balanced default | Most PNG to WebP conversions |
| Quality 90-100 | Keeps more visible detail | Product visuals, detailed screenshots, gradients, and important artwork |
Leave width and height blank when you want to keep the source dimensions. If you enter dimensions, the current fields accept values from 1 to 16383 pixels. The upload validation limits files to 20MB.
Use this page when the source file is PNG and the output you need is WebP. If you need the reverse direction, use WebP to PNG instead. If you only need to reduce an image without changing the format to WebP, use Compress Image.
How to Convert PNG to WebP Online
1
Upload your PNG file
Choose a .png file from your device or drag it into the upload area. The upload field is scoped to PNG input, so this page is meant for direct PNG to WebP conversion rather than a general image-to-WebP workflow.
2
Choose size and compression settings
Keep the width and height fields empty if the WebP output should use the original PNG dimensions. Enter a target width, height, or both when the converted file needs to match a layout, upload requirement, or final display size.
- •Choose lossy mode when smaller WebP files matter most. Choose lossless mode when the image has text, crisp edges, transparent artwork, or interface details that should avoid lossy compression.
3
Select quality for lossy WebP
In lossy mode, start with quality 80 for a balanced result. Lower the quality when the output must be lighter, or raise it when the PNG contains gradients, thin lines, faces, product details, or other elements where artifacts are easy to notice.
4
Convert and download the WebP file
Start the conversion, wait for the task to finish, and download the .webp file. Use the WebP output in websites, blog posts, landing pages, product cards, documentation, or any workflow where modern image delivery is supported.
Choosing PNG to WebP Compression Settings
PNG and WebP can both be useful, but they solve different parts of an image workflow. PNG is often a reliable source or editing format. WebP is often a better delivery format when smaller files matter.
| Output goal | Suggested setting | Why it works |
|---|---|---|
| Small website thumbnails | Quality 60-70 | Keeps file size low while preserving enough detail at small sizes |
| General web graphics | Quality 70-80 | Good balance for content images, cards, and page sections |
| Transparent logos or icons | Lossless or quality 90-100 | Helps protect edges and semi-transparent pixels |
| Screenshots with text | Lossless or quality 90-100 | Keeps lettering, lines, and interface details cleaner |
| Oversized PNG assets | Resize plus quality 70-80 | Reducing dimensions often saves more than compression alone |
For most users, quality 80 is the safest first test. Download the WebP file and compare it at the size where it will actually appear. A small artifact that looks obvious at 300 percent zoom may not matter in a thumbnail, while a tiny edge problem can be very visible on a logo placed over a dark background.
Lossless WebP is useful when you want to avoid lossy compression. It does not guarantee that the WebP file will always be smaller than the PNG source. Some PNG files, especially simple graphics, may already be compact.
Transparent PNG to WebP
WebP supports alpha transparency, so it is a suitable output format for many transparent PNG images. That makes PNG to WebP useful for interface icons, product overlays, stickers, badges, logos, and graphics that need to sit on different backgrounds.
Use a higher quality setting or lossless mode when transparent edges matter. Thin outlines, soft shadows, antialiasing, and semi-transparent pixels can make compression artifacts easier to see, especially when the WebP output is placed over a dark, patterned, or colored background.
After conversion, preview the WebP on the background where it will be used. That is the best way to check whether the transparent edges and fine details look right in context.
When to Use WebP Instead of PNG
Convert PNG to WebP when your PNG looks correct but is heavier than you want for delivery. WebP can be a good final format for web pages, interface assets, and media-heavy layouts that care about load speed.
| Use case | Why WebP helps |
|---|---|
| Website graphics | WebP can reduce page weight for supported browsers |
| Blog and documentation images | Smaller delivery files keep long articles easier to load |
| Product cards and thumbnails | Repeated images benefit from lighter file sizes |
| UI screenshots | Resize and quality options can prepare cleaner documentation assets |
| Transparent icons and badges | WebP can carry transparency in a web-friendly format |
Keep the original PNG as your source or fallback file. WebP is excellent for delivery, but you may still need the PNG later for editing, compatibility, or exporting to another modern format such as AVIF.
Common Mistakes to Avoid
Do not rename .png to .webp manually
Changing the extension does not convert the image data. A real PNG to WebP conversion must decode the PNG source and encode a WebP output file.
Do not assume every WebP will be smaller
WebP is efficient, but final size depends on image content, dimensions, quality, and whether you choose lossy or lossless mode. Compare the output before replacing important assets.
Do not use lossy mode for every transparent graphic
Lossy WebP can be a good choice for many website images, but sharp edges and transparent artwork may need higher quality or lossless mode. Test transparent images on the background where they will appear.
Do not upload private images casually
PNG files are uploaded for backend processing and scheduled for deletion within 24 hours. Use the tool for ordinary image conversion tasks, and avoid uploading sensitive or regulated images if you are not comfortable processing them through an online converter.
Frequently Asked Questions
A PNG to WebP converter re-encodes a .png image into the WebP format. The goal is usually to create a web-ready image with modern compression while keeping the original PNG as a source or fallback file.
This page is presented as a free PNG to WebP converter for direct online conversion. Any current upload limits, usage limits, or sign-in prompts are shown in the interface.
Use lossless mode when you want to avoid lossy WebP compression. Lossless mode preserves the decoded image data more carefully, but it does not guarantee the smallest possible file. Lossy mode usually creates smaller files but can reduce visible quality depending on the quality setting.
WebP supports alpha transparency, and transparent PNG images can often keep transparent areas in WebP output. For important logos, icons, shadows, or semi-transparent edges, use higher quality or lossless mode and preview the result on the intended background.
Yes. Choose lossy mode and select quality 60, 70, 80, 90, or 100, or choose lossless mode when quality preservation is more important than maximum compression. Quality 80 is the balanced default for many PNG to WebP conversions.
Start with quality 80. Use 60-70 for smaller website previews, 80 for balanced output, and 90-100 for detailed graphics, screenshots, gradients, or transparent artwork where artifacts are easier to notice.
Yes. Leave width and height blank to keep the original dimensions, or enter a target size before converting. The current width and height fields accept values from 1 to 16383 pixels.
Yes. The current upload validation limits files to 20MB. If your PNG is larger, reduce the source dimensions or prepare a smaller file before uploading it here.
This page is focused on converting one PNG file at a time. Do not plan a batch workflow around this page unless the interface adds a dedicated batch upload feature.