How to convert PNG to WebP
- 1. Add your PNG filesClick Choose PNG files, drop them onto the box, or paste a copied image with Ctrl+V (Cmd+V on a Mac). Add as many as you need.
- 2. Set quality or Lossless, then ConvertLeave Quality on High for most web images, or tick Lossless to keep every pixel. Conversion starts only when you click Convert.
- 3. Download the WebP filesSave each image with its Download button, or use Download all (.zip) to get the whole batch at once.
PNG and WebP compared
PNG has been the standard lossless web format since 1996. It's perfect for screenshots, logos and anything with sharp edges or transparency, but its files can be large.
WebP was released by Google in 2010 and now works in every major browser, including Safari since 2020. It can compress lossy like a JPG or lossless like a PNG, and it supports transparency in both modes. For most web graphics that means smaller files that look the same.
| PNG | WebP | |
|---|---|---|
| Compression | Lossless only | Lossy or lossless |
| Transparency | Yes | Yes, in both modes |
| Animation | Only as APNG, with limited tool support | Yes |
| Typical file size | Larger | Usually smaller for the same image |
| Browser support | Universal | All current major browsers |
| Support outside browsers | Universal | Good, but some older apps can't open it |
| Best for | Editing, archiving, sharing anywhere | Images served on websites |
Lossy or lossless: which should you pick?
Lossless keeps every pixel exactly as it was. Use it for logos, icons, UI screenshots and diagrams, where a single blurred edge would be noticeable. Lossless WebP files are usually smaller than the PNGs they came from, though not by as much as lossy ones.
Lossy (Lossless unticked) gives much smaller files and is the better choice for photos and detailed illustrations saved as PNG. The Quality menu controls the trade-off: High is the default and looks identical to most people, Maximum keeps more detail, while Medium and Smallest file squeeze harder. The Quality setting is for lossy mode; with Lossless ticked, every pixel is kept regardless.
Not sure? Convert a couple of images both ways. After converting, each row shows the original size and the new size, so you can compare before you process a whole folder.
Using WebP on your website
- WordPress has accepted WebP uploads in the media library since version 5.8, so you can upload converted files directly.
- Most site builders and CMSs now accept WebP too. If yours doesn't, keep the PNG.
- Keep your original PNGs. WebP is a delivery format; PNG is easier to edit and open in older software.
- Converting photos rather than graphics? Turn your JPG photos into WebP instead, which avoids an extra round of compression.
Bulk conversion without uploading
Optimizing a site often means converting dozens or hundreds of images. Drop them all in at once: they convert a few at a time on your own device, with no upload queue and no file-count limit. Very large batches depend on your device's memory, so on a phone it's faster to work in smaller groups.
Because the files never leave your computer, this works for unreleased designs, client work and anything under NDA.
Things to be aware of
- Metadata stored in the PNG isn't carried over unless you set Metadata to Keep.
- Some older desktop apps, email clients and print services still can't open WebP. If you need to go back, you can convert a WebP back to PNG.
- If a JPG suits you better than WebP, save your PNG as a JPG with a white or black background instead.
Frequently asked questions
Is PNG to WebP conversion lossless?
It can be. Tick Lossless and every pixel is kept exactly. Leave it unticked for lossy compression, which makes much smaller files with a tiny, usually invisible loss of detail.
Does WebP keep the transparent background?
Yes. WebP supports transparency in both lossy and lossless mode, so transparent areas in your PNG stay transparent.
Can I bulk convert PNG to WebP?
Yes. Add as many PNGs as you like, click Convert once, then use Download all (.zip). There are no file-count or daily limits.
Are my images uploaded anywhere?
No. The conversion runs in your browser and your images are never uploaded. Like any website, the page loads its code, ads and cookieless analytics, but your image data stays on your device. Learn how to verify this.
Which quality setting is best for a website?
High (the default) suits most photos and illustrations. For logos, icons and screenshots, tick Lossless. Try Medium if you need pages to load faster and can accept slightly softer detail.
Will my WebP files work in all browsers?
Yes, all current versions of Chrome, Edge, Firefox and Safari display WebP. Only very old browsers, such as Internet Explorer, can't.
Can I convert other image types to WebP?
This page takes PNG files. For JPG and JFIF photos, use the JPG to WebP tool.
Does the WebP keep my PNG's metadata?
Not by default. Metadata is set to Remove, so text, EXIF and XMP data in the PNG are left out. Choose Keep to copy the EXIF and XMP data into the WebP.