Apply one percentage-based crop rectangle consistently across every complete animation frame. Left, top, width, and height percentages are resolved against the shared animation canvas and bounded so every output rectangle remains inside the source. The workflow identifies actual animation structure rather than trusting a filename, runs locally, and returns a clearly named derivative or report while leaving the selected source unchanged.
How to use Animation Cropper
- Choose a genuine animated WebP and review the available animation cropping controls.
- Run the browser-only operation and inspect the reported frame count, duration, dimensions, and loop details.
- Download the result, preview it in the intended destination, and retain the original until the edited animation is approved.
What this tool is good at
When to use Animation Cropper
Prepare a consistently cropped animation for publication
Reframe a shared canvas for a card, product tile, banner, or focused subject without sending motion frames to a cloud editor. Work from the actual animated container and keep the original as the authoritative master until the derivative has been previewed in its destination.
Investigate motion locally
Percentage geometry resolves against measured source dimensions and is bounded inside the canvas for every frame. This supports evidence-based timing and geometry decisions for client, product, research, or internal assets without transferring image bytes to a conversion endpoint.
Create a repeatable handoff
Save the named output and its reported frames, dimensions, duration, and loop facts beside the publishing task. The crop does not track subjects automatically, and pixels outside the rectangle cannot be recovered from the derivative.
How to choose the right settings
Preview the complete sequence
Reframe a shared canvas for a card, product tile, banner, or focused subject without sending motion frames to a cloud editor. Check the first-to-last transition as well as individual frames because a technically valid output can still contain a visible jump or distracting loop.
Budget decoded memory
Compressed size does not predict working memory. The browser may hold complete RGBA canvases for every frame, so the workflow enforces frame-count and pixel-frame limits before creating large derivatives.
Test the real destination
The crop does not track subjects automatically, and pixels outside the rectangle cannot be recovered from the derivative. Autoplay policy, reduced-motion preferences, rendering load, and viewer-specific delay clamping can affect presentation after download.
Practical workflow and output details
One crop rectangle is drawn from each complete decoded frame and the resulting smaller canvases are remuxed with their timing. Static application code and the local WebAssembly codec may be loaded, but the selected image itself remains in the current browser tab.
Percentage geometry resolves against measured source dimensions and is bounded inside the canvas for every frame. The crop does not track subjects automatically, and pixels outside the rectangle cannot be recovered from the derivative. The tool limits its claims to the named operation and never treats successful container creation as proof of visual quality, accessibility, or universal playback behavior.
Format behavior and limitations
Left, top, width, and height percentages are resolved against the shared animation canvas and bounded so every output rectangle remains inside the source. A single rectangle is used for all frames and does not track a moving subject automatically.
Complete displayed frames are decoded to canvas and remuxed as full-canvas keyframes. This preserves visible motion but does not copy EXIF, XMP, or ICC chunks and can change compression size.
Government and research sources
These references support the format facts, metadata terminology, and privacy context explained on this page. They do not endorse PicConverters.
Documents animated WebP, its ANIM and ANMF chunks, frame geometry, duration, blending, disposal, and loop count.
Research context for real-world use and performance characteristics of modern web image formats including WebP.
Frequently asked questions
Does the Animation Cropper upload my animation?
No. The file is inspected and processed in the current browser tab; PicConverters does not receive its image bytes.
Will the result remain animated?
Yes. The operation requires at least two frames and writes or preserves a genuine animated WebP container.
What should I verify before publishing?
Preview motion, frame timing, dimensions, transparency, and loop behavior in the destination browser. A single rectangle is used for all frames and does not track a moving subject automatically.
Related WebP tools
Animation Resizer
Resize every animated WebP frame to one proportional target width while preserving timing and loop count.
Animation Rotator
Rotate every complete animated WebP frame by 90, 180, or 270 degrees around its canvas center.
Crop WebP
Crop static WebP images by percentage coordinates with precise output dimensions and quality.