motion-duration indexcard · index card with a stamped header

Compare Measured Animation Durations in Normal and Reduced-Motion Modes

A reduced-motion preference needs real behavior, not just a media-query name. Compare observed durations and identify unchanged or lengthened transitions while keeping duration distinct from motion intensity and accessibility compliance.

1 · animation label | normal duration milliseconds | reduced-mode duration milliseconds

FIRST-LOAD

HYPOTHESIS / PROTOTYPE — checkout unavailable. Calculation is local. A draft is saved automatically in this browser profile when storage is available; Reset to sample clears it. Optional Pro history stores only five summaries and has its own deletion control. State links encode your inputs and can remain in browser history, clipboard or recipients’ records; share only non-sensitive rows. Optional external AI formatting leaves this device. The required site analytics beacon reports page activity; shared URLs contain encoded inputs. Do not treat an encoded URL as private. The calculator has no input-collection endpoint.

Data note: The motion-duration indexcard processes animation label | normal duration milliseconds | reduced-mode duration milliseconds locally. Starter/sample selection and Run compute in this tab; no input is sent by the calculator. A local draft may be saved; explicit state-link sharing or optional external AI formatting can disclose inputs. Use non-sensitive labels.

Perspective: Before: a reduced-mode label could conceal unchanged duration. After: measured mode differences are visible and static originals are kept out of percentage arithmetic.

2 · Read the motion-duration indexcard

Duration arithmetic only, not an accessibility, medical, sensory-safety or compliance assessment. It cannot measure movement distance, flashing, essential feedback or user comfort. Test the actual reduced-motion path with users and a qualified accessibility specialist; do not treat a hundred-percent duration reduction as proof that a page is safe or accessible.

Paid layer: motion-duration indexcard filing layer

one-time step · the free reading above stays complete

hidden patterns detected after your first run

Free tier

one complete unwatermarked motion-duration indexcard run in the app
three labeled samples and unlimited article-demo calculations
complete result text and a user-triggered input-state link

What $4 one-time adds

unlimited subsequent motion-duration indexcard app calculations after a local convenience signal
print the motion-duration indexcard with visible assumptions and its safety boundary
CSV of the displayed percent duration reduction and row workings; conditional estimate uses your manual-retyping minutes
five local reading summaries (headline/count/time), not saved full inputs or cross-device backups

HYPOTHESIS / PROTOTYPE: $4 is a proposed one-time price for filing the motion-duration indexcard, not a current sales offer. No measured time saving or buyer demand is claimed. The optional manual-retyping baseline above estimates one export’s retyping budget only; it does not change the calculation or guarantee savings.

Local history (this device)

No saved runs yet — your first run files here.

Filing prototype — checkout unavailable

Checkout is unavailable. Browser-local, profile-scoped convenience gating is best-effort, not server-verified access. A URL or browser flag is not proof of payment. Clearing browser data removes local state; no account or cross-device recovery is provided.

Optional filing controls are a local prototype.

Checkout is unavailable. The reading above is complete; print, CSV and five local summaries are optional enhancements, not hidden answers.

Before using the motion-duration indexcard

Inventory a small set of transitions by the interaction that starts them, then observe both preference modes under the same browser conditions. Record the active duration rather than a CSS declaration that a script might override. A looping animation or a chain of effects needs a clearly defined measurement; this form does not infer that structure. Zero means no timed animation was observed for the entered transition, not that all movement on the page is gone. The useful artifact is a side-by-side measurement record a reviewer can take back to the implementation. Essential state feedback must remain understandable even if animation is removed. Ask users about the motion they experience instead of treating a percentage as a proxy for their sensory needs.

Boundary and sources

Method: For a positive original, reduction equals one minus reduced duration divided by normal duration, times one hundred. A longer reduced duration gives a negative reduction. Zero-to-zero rows are described as static and excluded from the minimum; zero-to-positive is an explicit error.
All sample records, dates, quantities and labels are invented. No outside policy, contract, rate, clock offset, measurement or accessibility standard is represented as verified.
Google’s official pricing documentation, fetched 2026-09-30, says AI Studio is free in available regions. Optional formatting may require a Google account; manual local entry requires none. Limits can change and free-tier content may be used to improve products. Do not send private records.

Mechanism: competence-autonomy-loop

Optional AI formatting, never the calculation

Manual entry completes this motion-duration indexcard for free without signup. If available to you, the free AI Studio interface linked in the sources may format fictional or non-sensitive notes; external access may require an account. No API key or AI call is built into this tool. Free-tier content may be used to improve products. Review each cell and transcribe it to the labeled row schema; do not paste the JSON object into the row box.

Format only these fictional or non-sensitive notes for a motion-duration indexcard. Return strict JSON shaped as {"rows": [{"label": "string", "cells": ["string", "string"]}], "setting": "string"}. The columns are animation label | normal duration milliseconds | reduced-mode duration milliseconds; the setting is Chosen minimum duration reduction percentage. Keep all supplied strings and quantities exactly; do not calculate, infer missing entries, invent dates or add advice. If any required value is missing, return an empty rows array and ask me for it separately. I will verify every cell against my source and manually transcribe rows using vertical bars before running the local calculator.

An AI response is not executed, fetched or trusted as a result. Missing values remain questions; the strict local parser checks the rows you actually enter.