WebP is already one of the most efficient image formats. Our tool pushes it further with advanced re-encoding to hit exact file-size targets.
Upload WebP Images
Select your WebP files — static images or animated WebP sequences. The tool handles both lossy and lossless WebP inputs. Batch upload up to 50 files.
Choose Target Size
Pick a target file size. WebP supports both lossy and lossless modes — our engine picks the optimal mode and quality factor to hit your target with the best visual result.
Download Compressed WebP
Download your optimized WebP files ready for the web. The output format stays WebP — no conversion. Individual download or ZIP batch available.
Why Choose Our WebP Compressor
VP8 Lossy Encoding
Lossy WebP uses the VP8 video codec's intra-frame encoding with predictive coding and adaptive quantization, producing files 25-35% smaller than equivalent JPEGs.
Lossless Mode
WebP lossless compression uses spatial prediction, color transforms, and entropy coding. It produces files 26% smaller than PNG on average with zero quality loss.
Alpha Channel Support
Unlike JPG, WebP supports full transparency in both lossy and lossless modes. Lossy WebP with alpha is typically 3x smaller than a PNG with the same transparency.
Broad Browser Support
WebP is supported by all modern browsers — Chrome, Firefox, Safari 14+, and Edge. Global browser coverage exceeds 97%, making it safe for production web use.
Smaller Than JPEG
WebP lossy files are 25-35% smaller than JPEG at the same visual quality, and WebP also supports transparency which JPEG cannot.
Animation Support
WebP supports animated sequences as a modern replacement for GIF, delivering significantly smaller file sizes with better color depth and transparency.
Vật lý nén
How WebP compression works at this target
WebP is a VP8-derived format that ships in two modes: lossy (≈25-35% smaller than JPG at the same visual quality) and lossless (≈26% smaller than PNG). Our compressor uses lossy mode by default and tunes the quality parameter downward to hit the target. The quality-vs-size curve is smoother than JPG — going from quality 90 to 60 in WebP typically produces less visible degradation than the equivalent JPG drop. All modern browsers (Chrome, Firefox, Safari 14+, Edge) support WebP natively.
Cổng thực được ánh xạ tới mục tiêu kích thước
Which target size to pick for WEBP
Different portals cap WEBP uploads at different sizes. Pick the target that matches where you’re uploading rather than shrinking blindly — over-compressing wastes visible quality, under-compressing gets rejected.
Quick answers about compression targets, upload limits, format behavior, and the best cases for compressing WEBP files.
How do I compress WEBP files online?
Choose a target size, upload your WEBP file, and click Compress. iFormat shrinks it to your chosen size while keeping quality as high as possible — free, no watermark, and no account needed.
What sizes can I compress WEBP to?
Bạn có thể nhắm mục tiêu 50KB, 100KB, 200KB, 500KB, 1MB hoặc 2MB, mỗi mục tiêu có công cụ chuyên dụng riêng. Chọn kích thước phù hợp với giới hạn tải lên hoặc giới hạn email bạn cần đáp ứng.
How does WEBP compression work?
WebP compression adjusts the quality parameter of Google's VP8-derived codec. WebP is already 25–35% more efficient than JPG at equivalent quality, so further compression involves lowering quality or reducing dimensions. The compressor finds the optimal quality setting for your target size.
Will compressing reduce WEBP quality?
WebP handles compression artifacts better than JPG — it avoids the blocking artifacts that JPG shows at low quality. At quality 60, WebP still looks acceptable for web use. Below quality 40, smearing and loss of fine detail become visible.
Is the WEBP compressor free?
Yes. Compressing WEBP files is free with no watermark and no sign-up. Paid plans only raise file-size and batch limits.
Are my WEBP files kept private?
Đúng. Nội dung tải lên sử dụng kết nối HTTPS được mã hóa, quá trình nén chạy trên một nhân viên biệt lập và cả tệp gốc và tệp nén của bạn sẽ tự động bị xóa trong một cửa sổ ngắn — không có nội dung nào được lưu trữ, chia sẻ hoặc sử dụng cho mục đích đào tạo.
