Export a structured animation report covering timing, frame rectangles, composition flags, encoding, metadata, chunks, and storage. The bounded RIFF parser distinguishes full-canvas and partial frames, disposal and blend counts, per-frame encoding, duration distribution, and container overhead. The workflow checks actual file signatures and animation structure instead of trusting an extension, runs entirely in the browser, and leaves the selected source unchanged.
How to use Animation Analyzer
- Choose the required source file or ordered files and configure the animation analysis controls.
- Run the local processor, then inspect the reported frames, timing, canvas, changed fields, and warnings.
- Download the derivative or report, test it in the intended destination, and keep the original until the result is approved.
What this tool is good at
When to use Animation Analyzer
Build a controlled animation evidence report
Investigate timing, frame rectangles, composition flags, encoding, metadata, chunks, and storage before editing or debugging a WebP. Work from genuine animation structure and keep the selected source as the authoritative master until the complete output has been approved.
Troubleshoot composition privately
The JSON separates full-canvas and partial frames, delay distribution, blend and disposal counts, payload bytes, and container overhead. This supports client, product, research, and internal assets without transferring their image bytes to an unrelated processing service.
Document a repeatable handoff
Save the named derivative or JSON evidence with its reported timing, frames, dimensions, and warnings. Structural coherence cannot prove safe decoder behavior, author intent, visual quality, or identical scheduling across browsers and applications.
How to choose the right settings
Change one dimension intentionally
Investigate timing, frame rectangles, composition flags, encoding, metadata, chunks, and storage before editing or debugging a WebP. Use the focused controls to isolate the effect, then compare the first frame, intermediate composition, and final-to-first loop transition.
Respect browser memory
A small compressed file can decode into many complete RGBA canvases. Frame-count, pixel-frame, and output-size limits prevent an accidental animation from exhausting ordinary browser memory.
Verify the consuming application
Structural coherence cannot prove safe decoder behavior, author intent, visual quality, or identical scheduling across browsers and applications. Test Chrome or the exact CMS, editor, messaging client, or runtime that will display or consume the result.
Practical workflow and output details
A bounded typed-array RIFF parser reads stored fields without decoding, rewriting, or uploading image pixels. The source stays in the current browser tab; the application may load a local codec asset but creates no image-processing upload.
The JSON separates full-canvas and partial frames, delay distribution, blend and disposal counts, payload bytes, and container overhead. Structural coherence cannot prove safe decoder behavior, author intent, visual quality, or identical scheduling across browsers and applications. The tool reports only the named operation and does not equate a structurally valid output with proven visual quality, accessibility, color accuracy, or universal playback.
Format behavior and limitations
The bounded RIFF parser distinguishes full-canvas and partial frames, disposal and blend counts, per-frame encoding, duration distribution, and container overhead. Structural evidence cannot certify visual quality, decoder safety, author intent, or identical scheduling in every application.
The processor reads or patches bounded container fields and does not claim broader visual repair, compression optimization, or cross-viewer equivalence than the named operation establishes.
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, ANIM and ANMF parameters, background color, frame geometry, duration, blending, disposal, transparency, and compression.
Research evaluating modern web-image format adoption and performance across popular browsers.
Frequently asked questions
Does the Animation Analyzer upload files?
No. Selected image bytes remain in the current browser tab; only application and codec assets are loaded.
Does this silently flatten animation?
No. The json report is a deliberate derivative or report, while the source remains unchanged.
What should I verify?
Preview the complete result and compare frame order, timing, composition, transparency, and dimensions. Structural evidence cannot certify visual quality, decoder safety, author intent, or identical scheduling in every application.
Related WebP tools
Duration Calculator
Calculate frame delays, one-play duration, loop behavior, and finite total playback time from WebP container bytes.
RIFF Chunk Inspector
Inspect every top-level WebP RIFF chunk with byte offsets, payload sizes, padding, order, and container coverage.
WebP Animation Checker
Check whether WebP files are animated and report frame count, loop count, total duration, frame rectangles, delays, blending, and disposal.