gantts.app

What it does

Analytics and ads

Google Analytics 4 is off until a visitor consents, while Google AdSense loads on pages and may use advertising cookies.checked 9 Oct 2026

Critical path

The app automatically calculates and highlights the critical path.checked 9 Oct 2026

Dependencies

The app supports four task dependency types and updates dependency arrows as dates change.checked 9 Oct 2026

Import and export

The app supports task-list imports from CSV or JSON and plain-text outlines, and exports to PDF, PNG, Excel, PowerPoint, and JSON.checked 9 Oct 2026

Integrations

The editor provides exports for Microsoft Project XML, calendar ICS, Mermaid Gantt text, and an embeddable iframe.checked 9 Oct 2026

Intended users

The maker describes the tool as intended for anyone who wants to plan a project on a timeline without an account, download, or paywall.checked 9 Oct 2026

Local data

Projects are saved in browser local storage and are not uploaded to or stored on the maker’s servers.checked 9 Oct 2026

Notable limitation

The maker says it cannot access charts to investigate issues or recover lost projects; clearing browser data removes locally saved projects.checked 9 Oct 2026

Offline use

The app can be installed to a home screen and used offline.checked 9 Oct 2026

Organization

Users can group tasks into phases with roll-up bars, milestones, and automatic numbering.checked 9 Oct 2026

Purpose

gantts.app is a free Gantt chart maker that runs in a web browser and lets users create project timelines.checked 9 Oct 2026

Scheduling

Users can drag and resize task bars, set progress, reorder tasks, and schedule work on an interactive timeline.checked 9 Oct 2026

Sharing

Shareable links encode project data in the URL fragment, so the project is not stored on a server.checked 9 Oct 2026

Support

The maker accepts questions, bug reports, and feature requests by email or public GitHub issue, with no support queue or ticket system.checked 9 Oct 2026