Compress WebP Images Online

Reduce WebP file size by up to 80% with adjustable quality. Already the most efficient image format — now even smaller. Free, no signup.

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Supports M4A, WAV, FLAC, OGG, AAC, WMA, AIFF, OPUS • Max 100 MB

Encrypted upload via HTTPS. Files auto-deleted from our servers within 2 hours.

How to Compress a WebP Image

1

Upload WebP

Drag and drop your WebP image into the tool above, or click to browse. Supports files up to 100 MB.

2

Choose Quality

Select a compression level: Low (60) for maximum size reduction, Good (80) for the best balance, or Very High (92) for near-lossless output.

3

Download

Click Compress & Download and get your smaller WebP. The result shows exactly how many bytes you saved.

How WebP Compression Works

WebP is Google's modern image format designed specifically for the web. It uses advanced compression techniques that outperform both JPEG and PNG:

  1. Predictive coding — WebP predicts pixel values based on neighboring blocks that have already been decoded. Only the difference between the prediction and the actual value is encoded, which is much smaller than encoding raw pixel data.
  2. Block-based transform — similar to JPEG's DCT, but WebP uses a more efficient 4×4 transform that adapts better to image content, reducing blocking artifacts at lower quality levels.
  3. Adaptive quantization — WebP automatically varies the compression strength across different areas of the image. Smooth gradients get heavier compression while sharp edges are preserved, resulting in better visual quality per byte.
  4. Boolean arithmetic coding — instead of Huffman coding used by JPEG, WebP uses arithmetic coding which squeezes 5–10% more compression from the same data.

These techniques combined make WebP 25–34% smaller than JPEG at equivalent visual quality — and recompressing an existing WebP image at a lower quality setting can yield significant additional savings.

Quality Levels Guide

Quality Size Reduction Visual Quality Best For
92 10–20% Indistinguishable from original Photography portfolios, high-end e-commerce
85 25–35% Excellent — no visible artifacts Hero images, blog cover photos, product photos
80 35–50% Visually identical for most images General web use, blog posts. Recommended default.
75 45–60% Minimal difference, slight softening Social media, email, content images
60 60–75% Visible softening on detailed areas Thumbnails, previews, lazy-loaded images

Pro tip: WebP is already more efficient than JPEG, so quality 80 in WebP produces smaller files with better visual quality than JPEG at the same setting. If your original WebP was saved at quality 90+, recompressing at 80 can save 30–50% with no visible difference.

WebP vs JPEG: Size Comparison

WebP consistently produces smaller files than JPEG at equivalent visual quality. Here’s how they compare for typical web images:

Image Type JPEG Size (q80) WebP Size (q80) WebP Savings
Hero Banner (1920×1080) 250–400 KB 150–280 KB 25–35% smaller
Product Photo (1000×1000) 120–200 KB 80–140 KB 30–35% smaller
Blog Image (800×600) 80–150 KB 55–100 KB 30–40% smaller
Thumbnail (300×300) 20–40 KB 12–28 KB 25–35% smaller

For fastest page loads, serve WebP to browsers that support it (all modern browsers do) and keep a JPEG fallback for edge cases. Our JPG to WebP converter makes it easy to create WebP versions of your existing images.

WebP for Web Performance

Google PageSpeed Insights specifically recommends WebP as a “next-gen image format.” Here’s how compressed WebP can boost your site’s performance:

  • Faster Largest Contentful Paint (LCP) — smaller images load faster, directly improving your Core Web Vitals score and search ranking.
  • Lower bandwidth costs — 25–50% smaller images mean less data transfer, which reduces hosting costs for high-traffic sites.
  • Better mobile experience — compressed WebP images load quickly even on 3G/4G networks, reducing bounce rates on mobile.
  • CDN savings — smaller files mean lower CDN egress costs and faster cache distribution across edge nodes.

Compress first, then consider using our Resize Image tool to scale images to the exact dimensions needed on your page — don’t serve a 4000px image in a 800px container.

Frequently Asked Questions

WebP compression is lossy, so some data is discarded. However, WebP’s advanced compression techniques mean that quality 80 looks virtually identical to the original while saving 35–50% in file size. WebP produces fewer artifacts than JPEG at the same quality level, so even at lower settings the results look clean.
Typical savings: Quality 92 saves 10–20%, Quality 85 saves 25–35%, Quality 80 saves 35–50%, Quality 75 saves 45–60%, Quality 60 saves 60–75%. If your original WebP was exported at high quality (90+), you can often get 30–50% reduction at quality 80 with no visible difference.
Quality 80 is ideal for most web images — it provides the best balance between file size and visual quality. WebP is already more efficient than JPEG, so quality 80 in WebP looks better than JPEG quality 85. For photography portfolios, use 85–92. For thumbnails and lazy-loaded images, 60–75 works well.
Yes, WebP is supported in all major modern browsers: Chrome, Firefox, Edge, Safari (since version 14), and Opera. As of 2024, WebP has over 97% browser support globally. For the rare older browsers, use the HTML <picture> element to provide a JPEG fallback.
Yes, completely free. No signup, no watermarks, no file count limits. Upload your WebP, choose the quality level, and download the compressed result. Files are encrypted via HTTPS during upload and automatically deleted from our servers within 2 hours.

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