HeuristiCheck, created by Anuraj Kumar Dwivedi, is a Chrome extension built to automate heuristic usability reviews for designers and agencies. It scans a page's DOM and identifies violations of Jakob Nielsen's 10 heuristics, then generates visual overlays and developer-ready suggestions. Key elements include interactive heatmaps, AI-generated HTML/CSS fixes, and one-click exports to PDF and CSV. The tool targets UX researchers, UI designers, frontend developers, and digital agencies needing faster, evidence-driven audits.

What HeuristiCheck does for rapid UX audits

The tool executes a rule-based evaluation against Nielsen's 10 usability heuristics, identifying interface violations directly from the page DOM. That approach replaces manual screenshots and checklist work by producing interactive overlays that map friction points to specific heuristic failures. The extension also flags accessibility contrast errors and other real-time violations, which helps teams build an evidence-backed list of issues tied to precise DOM nodes rather than vague notes.

How fast does it scan pages and produce results?

HeuristiCheck performs a full DOM scan in under two seconds according to its design, so a basic audit fits into quick review cycles. The extension runs inside the browser process and returns overlays and a heatmap rapidly, which keeps an audit lightweight during iterative testing. The speed claim is useful for short client sessions where multiple pages must be sampled within a single meeting.

Does the tool keep audit data private and local?

The app stores audit data and API configuration in local browser storage rather than sending audits to external servers, a design choice that reduces external data transfer. Users must supply their own OpenAI or Google Gemini API key to activate AI remediation, and that key is also kept in local storage. This model limits third-party hosting of audit contents and places credential management under the user's control.

Is the AI remediation practical for handoffs to developers?

The extension couples issue detection with AI-generated HTML and CSS suggestions sourced via GPT-4 or Gemini Pro, producing copy-paste fixes intended for immediate application. Export options include agency-ready PDF and CSV files for sharing with stakeholders. The app targets workflows where designers and frontend developers move quickly from problem identification to actionable code snippets during client reviews or sprint handoffs.

Suitable for teams that need fast, evidence-backed UX audits

The tool is a strong fit for teams that prioritize quick, traceable usability assessments and want actionable remediation in the same session. Expect a browser-contained workflow that shifts responsibility for AI credentials to the user and fits agencies that prefer local data handling. For practical use, adopt the extension as a regular audit step in client reviews and integrate its exports into your handoff documents to maintain traceability and clarity.