Recorder Zoom

Recorder Zoom analyzes how users adjust browser zoom levels to inform layout decisions, accessibility strategies, and SEO considerations. It targets UX researchers, product managers, and SEOs who want reproducible evidence about zoom behavior across pages and devices. The tool emphasizes privacy-friendly data collection and provides exportable insights for stakeholder reviews without requiring changes to the target site.
The tool operates within a defined analysis window and provides both required and advanced capabilities. Required features include: URL scoping, duration for data collection, zoom estimation via devicePixelRatio with optional CSS zoom parsing, viewport metrics capture (width, height, DPR), per-event timestamps, and aggregation into a zoom-level distribution. Optional features include sampling rate control, mobile-view profiling, exclusion of throttled data, and cross-page comparisons. Outputs include a zoom-level distribution with counts and a concise session summary.
Inputs cover url, duration, sampling rate, and optional tracking flags; outputs include total events, per-level counts, start/end times, and export formats. Algorithms compute zoom percent, building a distribution across the session, and generating a summary. Edge cases handle invalid inputs, unreachable URLs, and privacy safeguards. The tool aligns with UTC time stamps and standard metric units, supporting international teams. Assumptions include no instrumentation of target sites and no PII collection; exclusions include cross-origin data beyond the provided URL.