PNG to WebP Converter

How to Convert PNG to WebP Online

1. Upload Your PNG Images: Click "+ Add Files" or drag and drop PNG files into the browser. Batch upload is supported — convert hundreds of PNGs in one job with shared settings.
2. Pick a Quality Preset: Open Advanced Options and set Quality Preset to Lowest, Low, Medium, High, Very High (default, recommended), or Highest. Lower presets cut more bytes; higher presets preserve more detail. Alternatively switch to "Specific file size" to target a kilobyte or megabyte budget per image.
3. Toggle Lossless or Resize (Optional): Set Lossless to "Yes" for pixel-identical output (typically 23-42% smaller than the source PNG, depending on the PNG optimizer used) or leave "No (Recommended)" for lossy WebP with much higher compression. Use Image Resolution to scale by percentage, pick a Preset Resolution, or enter custom Width x Height — aspect ratio is preserved by default.
4. Convert and Download: Click Convert. Files process on our servers and download individually or as a ZIP. No sign-up, no watermark, originals are not stored.

Why Convert PNG to WebP?

WebP is the image format Google created to replace PNG and JPEG on the web. It supports both lossless and lossy compression, full alpha transparency, and animation in a single container — features that previously required choosing between PNG, JPEG, or GIF. For the same visual quality, WebP files are dramatically smaller, which translates directly into faster page loads and better Core Web Vitals scores.

• Cut page weight by 25-80% — Lossless WebP is typically 23-42% smaller than equivalent PNG (the range depends on how well-optimized the source PNG is). With lossy WebP at 75-85% quality, photos and complex graphics typically shrink 60-80% versus a baseline PNG with no visible difference to most viewers.
• Faster LCP and better SEO — Largest Contentful Paint is a Core Web Vitals ranking signal. Hero PNGs converted to WebP commonly drop LCP by 200-800 ms on mobile, lifting overall page-experience scores.
• Keep transparency for logos and UI — WebP carries a full 8-bit alpha channel, so logos, icons, and PNG sprites stay transparent. No more swapping to JPEG and losing the alpha.
• Near-universal browser support — WebP is supported in Chrome 32+, Firefox 65+, Edge 18+, Safari 16+ (partial since Safari 14), and Opera 19+. Per caniuse.com, that's ~96% of global browser sessions.
• Replace bloated PNG screenshots — Documentation sites, design portfolios, and Figma exports often ship 1-3 MB PNG screenshots that compress to 200-400 KB as lossless WebP with no quality loss.
• CDN- and CMS-ready — WordPress, Cloudflare, Shopify, and most modern CMS platforms auto-serve WebP when the browser sends Accept: image/webp. Converting your asset library once unlocks that pipeline.

PNG vs WebP vs AVIF vs JPEG for Web

Expected File-Size Reduction by Content Type

Numbers are typical ranges; actual results depend on image complexity, palette, and the chosen quality preset.

Frequently Asked Questions

Should I pick lossless or lossy WebP when converting from PNG?

Use lossless if every pixel matters — UI screenshots for documentation, design system assets, pixel-art, or anything destined for further editing. Lossless WebP is typically 23-42% smaller than the source PNG (varies by PNG optimizer) with zero visual change. For photos, hero images, and decorative graphics, lossy WebP at the Very High preset (roughly Q80-85) typically delivers 60-80% smaller files with no visible difference to most viewers. If you'll re-export the file later, prefer lossless to avoid stacking generational loss.

Will my PNG transparency survive the conversion?

Yes. WebP supports a full 8-bit alpha channel, identical to PNG-32. Transparent logos, icons, UI sprites, and graphics with semi-transparent shadows convert cleanly. One caveat: at very low lossy quality (below ~Q50) some encoders can introduce slight halos around semi-transparent edges — stay at Very High or use Lossless = Yes if your image has fine alpha gradients. See WebP to PNG for the reverse direction.

Does every browser support WebP in 2026?

Effectively yes. Per caniuse.com, WebP is supported in ~96% of global browser sessions: Chrome 32+ (2014), Firefox 65+ (2019), Edge 18+ (2018), Opera 19+, and Safari 16+ on macOS Monterey 12.6+ or Ventura 13+ (partial since Safari 14). The remaining ~4% are legacy Internet Explorer, very old Android browsers, and some embedded WebViews. For those, serve a PNG fallback via <picture> with <source type="image/webp">.

Why is my converted WebP barely smaller than the PNG?

Two common reasons. First, your PNG was probably already optimized — tools like pngquant, OptiPNG, or TinyPNG strip a lot of the easy wins, leaving WebP only 5-15% smaller in lossless mode. Switch to lossy (default Very High preset) to recover much larger savings. Second, very small icons (under ~2 KB) carry a fixed container overhead in WebP that eats into compression gains. For tiny assets, SVG is often a better target than WebP.

Can I convert animated PNG (APNG) files to animated WebP?

WebP does support animation, but the converter on this page handles single-frame PNGs and outputs still WebP. APNG files would lose their animation in this flow. If you need animated WebP, convert your APNG to GIF first, then use a GIF-to-WebP tool — or export the animation as a sprite sheet of stills and reassemble in CSS.

Will WebP work for printing, presentations, or PowerPoint?

WebP is web-first. PowerPoint 2024, Keynote 14+, and Google Slides accept WebP, but many print workflows (InDesign, older versions of Photoshop, photo labs) still expect PNG, TIFF, or JPEG. If the destination is print or a legacy design tool, stick with PNG or convert through PNG to JPG. For embedded web docs, presentations, or modern Office suites, WebP works fine.

Should I serve WebP through a <picture> element or via the file directly?

If your audience is broad, wrap WebP in <picture> with a PNG/JPEG fallback so the ~3-5% of clients without WebP still see something. If you control the audience (intranet, modern web app, CMS-fronted CDN with Accept-header negotiation), you can serve WebP directly. Cloudflare, Bunny, Imgix, and Shopify do the negotiation automatically when WebP is uploaded as the primary asset.

Can I batch convert hundreds of PNGs at once?

Yes. Upload multiple PNGs and they share the same quality, lossless, and resize settings — useful for processing entire asset libraries or screenshot folders in one pass. The job runs on our servers, so very large batches (1000+ images, multi-GB total) are constrained by upload size and connection speed; split into smaller batches if the tab slows down. For ongoing optimization see Compress PNG and Compress WebP.

Is the converted WebP higher quality than just compressing the PNG?

For graphics with limited color palettes (icons, screenshots, line art), heavily-optimized PNG can occasionally match or beat lossless WebP by 5-10%. For photos, gradients, complex artwork, and anything with smooth color transitions, WebP wins decisively in both file size and perceived quality at a given bitrate. If your goal is the smallest possible web image without changing format, see Compress PNG; if you can change format, WebP almost always produces a smaller file.