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Convert PNG to WEBP Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload your PNG file
Click the upload button or drag and drop your PNG file. You can upload up to 10 files at once.
2Select WebP output format
Choose WebP as the output format.
3Convert
Click Convert. Convertify processes your file instantly using Rust and libvips.
4Download WebP
Download your converted WebP file. The original PNG is deleted from the server immediately.
Supported Image Formats
WebP
Modern image format by Google. Up to 30% smaller than JPG with the same quality.
PNG
Lossless format that preserves every pixel. Best for screenshots and logos.
HEIC
Apple photo format used by iPhone and iPad. High quality with small file size.
HEIF
High Efficiency Image Format — same as HEIC, used on Apple devices.
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
GIF
Classic format for simple animations. Supports transparency and up to 256 colors.
BMP
Uncompressed bitmap format. Maximum quality but very large file size.
TIFF
Professional lossless format used in printing and photography.
AVIF
Next-gen format with excellent compression. Up to 50% smaller than JPG.
PPM
Portable Pixmap format used in Unix/Linux environments.
HDR
High Dynamic Range format storing extended brightness data.
FITS
Flexible Image Transport System used in astronomy and science.
PDF
Portable Document Format. Convert PDF pages to JPG, PNG or WebP images.
AVIF vs WebP vs HEIC vs JPG
Quick comparison to help you choose the right format
AVIF
- Size: Up to 50% smaller than JPG
- Browsers: Chrome, Firefox, Safari
- Transparency: ✓
- Best for: Web performance
WebP
- Size: 25-35% smaller than JPG
- Browsers: All modern browsers
- Transparency: ✓
- Best for: Web compatibility
HEIC
- Size: ~50% smaller than JPG
- Browsers: Safari only
- Transparency: ✓
- Best for: iPhone storage
JPG
- Size: Baseline
- Browsers: All browsers & apps
- Transparency: ✗
- Best for: Universal sharing
Frequently Asked Questions
- Will WebP look the same as PNG on a website?
- At high quality settings (85+), the difference is imperceptible to the human eye. For logos and graphics, use WebP lossless for pixel-perfect output. For photos saved as PNG, WebP lossy at quality 85 produces visually identical results with dramatically smaller file sizes.
- Does WebP preserve PNG transparency?
- Yes. Both PNG and WebP support full alpha channel transparency. Transparent backgrounds, cutout images, and logos with transparency all convert cleanly from PNG to WebP with transparency fully preserved.
- How much smaller will my WebP be compared to PNG?
- It depends on the content. Photos saved as PNG converting to WebP lossy: typically 70–85% smaller. Screenshots and UI graphics: 20–30% smaller with lossless WebP. Simple flat-color logos: minimal difference. The largest savings come from photographic content incorrectly saved as PNG.
- Can I use WebP instead of PNG everywhere?
- For web delivery, yes — WebP is supported by 95%+ of browsers. For files shared outside the browser (email, design software, print), PNG has broader support. Use WebP for web assets, keep PNG for files that need to work in all applications.
- Is WebP lossless the same as PNG?
- Visually yes — WebP lossless preserves every pixel exactly like PNG. But WebP lossless achieves approximately 26% better compression than PNG on average. The output is pixel-perfect but the file is smaller.
- Can I convert multiple PNG files to WebP at once?
- Yes. Convertify supports batch conversion — upload up to 10 PNG files and download them all as WebP simultaneously.
- Will converting PNG to WebP affect my Google PageSpeed score?
- Yes, positively. PageSpeed Insights explicitly recommends next-gen formats like WebP over PNG. Large PNG files are one of the most common causes of poor performance scores. Converting to WebP directly improves the 'Serve images in next-gen formats' audit.
- Can Photoshop open WebP files?
- Photoshop CC 2021 and later support WebP natively. Older versions require the WebPShop plugin from Google. For design workflows, keep your source files as PNG and export to WebP for web delivery.
Why convert PNG to WebP?
PNG files are large. For photographs and complex images, a PNG can be 5–10× larger than the equivalent JPG or WebP. PNG's lossless compression is excellent for editing and archival — but it is the wrong format to serve on a website. WebP achieves 26% better lossless compression than PNG on average, and if you're serving photos that were saved as PNG, WebP lossy compression can reduce file size by 60–80% with imperceptible quality loss. Switching large PNG files to WebP is one of the most effective ways to reduce page weight and improve load times.
PNG to WebP: lossless vs lossy
When converting PNG to WebP, you have two options. WebP lossless preserves every pixel exactly — like PNG, but with 26% better compression on average. This is appropriate for logos, icons, screenshots, and any image where pixel accuracy matters. WebP lossy applies compression that discards some image data — like JPG, but more efficient. For photographic PNGs (product photos saved as PNG, screenshots of photos), lossy WebP achieves dramatically smaller files with visually identical results. Convertify converts at high quality lossy by default, which is the right choice for most photographic content. For logos and graphics, use PNG or lossless WebP.
PNG vs WebP: When to use which
| Feature | PNG | WebP |
|---|---|---|
| Compression | Lossless only | Lossy and lossless |
| File size (photos) | Very large | 60–80% smaller (lossy) |
| File size (graphics) | Good | ~26% smaller (lossless) |
| Transparency | Full alpha | Full alpha |
| Animation | Not supported | Supported |
| Browser support | All browsers & apps | 95%+ modern browsers |
| App support | Universal | Limited outside browsers |
| Best for | Editing, logos, universal | Web delivery |
Transparency in PNG to WebP conversion
Both PNG and WebP support full alpha channel transparency. When you convert a PNG with a transparent background to WebP, the transparency is fully preserved. This makes WebP a viable replacement for PNG in web contexts where transparency is needed — you get the same visual result with a significantly smaller file. Logos, icons, product cutouts, and UI elements with transparent backgrounds all convert cleanly from PNG to WebP with transparency intact.
How much smaller will your WebP be?
The reduction depends heavily on what the PNG contains. A photograph saved as PNG (a common mistake) converting to WebP lossy: typically 70–85% smaller. A screenshot of a web page or UI converting to WebP lossless: typically 20–30% smaller. A simple logo with flat colors and transparency: WebP lossless may actually be slightly larger than PNG in some cases, since PNG's LZ77 compression is extremely efficient for flat-color images. For mixed content and photographic PNGs, the savings are substantial.
PNG to WebP for WordPress and CMS
WordPress is the most common source of large PNG files on the web. Many site owners upload photos in PNG format by mistake, resulting in enormous page weights. The Lighthouse audit 'Serve images in next-gen formats' specifically calls out PNG files as candidates for WebP conversion. Plugins like ShortPixel, Imagify, and WebP Express can automate PNG-to-WebP conversion for your media library. If you prefer manual control, convert your PNG files to WebP with Convertify before uploading to your media library.
WebP support in 2026: is it safe to use?
WebP has been a Baseline Widely Available format since 2020. Chrome, Firefox, Safari, Edge, and Opera all support WebP — covering over 95% of global browser traffic. For web delivery, WebP is safe to use without a fallback for the vast majority of visitors. The HTML
Batch PNG to WebP conversion
Convertify supports batch conversion of up to 10 PNG files to WebP simultaneously. Upload your PNG files, select WebP as the output format, and download all converted files in one operation. This is useful when optimizing an image library, preparing assets for a web deployment, or converting a set of product images before uploading to a store.
How Convertify converts PNG to WebP
Convertify uses a Rust backend with libvips for accurate, high-performance conversion. Transparency from PNG files is fully preserved in the WebP output. The conversion pipeline handles color space normalization and alpha channel preservation automatically. Files are processed server-side over an encrypted HTTPS connection and deleted immediately after download. No account required, no file size limits beyond practical browser constraints.