Builder Tools
Tools for product builders
Free utilities that run in your browser, for the small jobs between an idea and a shipped product. Nothing to install.
Write and specify
For the specs and documents a product starts from.
Markdown Editor
Write and preview Markdown with live rendering. Export to PDF or DOCX. Supports light and dark themes and autosaves your work.
Use it for: Drafting a PRD, TRD or README, then handing it off as a PDF or Word file.
DSS Viewer
Visualize and edit Design System Spec JSON files. Browse colors, typography, components and theming contracts, then export the modified spec.
Use it for: Reviewing the design system an agent or designer hands you before you build on it.
Build and debug
Small utilities for the moments that come up while shipping.
JWT Editor
Decode and inspect JSON Web Tokens. View the header, payload and signature with syntax highlighting, and check expiration and standard claims.
Use it for: Working out why a sign-in or API call is being rejected.
Coordinate Picker
Pick coordinates from images to create SVG polygons. Upload an image, place pins and generate clean SVG for image maps and masks.
Use it for: Making clickable regions on a screenshot or diagram.
About these tools
The tools are browser-based and run on your machine. What you work on is saved to your browser's local storage, not to a ProductBuildersHQ account.
They are open source. The Markdown Editor's PDF and DOCX export loads its export libraries from a public CDN. Source on GitHub.