LensmapRead the PDF. Go deeper without leaving it.
Lensmap is not a full-document AI autopilot. Start from the passage you are actually reading, expand only the context you need, and keep what you learn as Maps that lead back to the source.
Keep using Chrome’s built-in PDF Viewer.
PMBOK 7 principles · Focus on value
A project is forecast to finish two months late before a fixed event date.
Lower quality to the minimum acceptable level — or spend more to add resources and deliver on time.
Which choice is right depends on why the project exists and how it creates value.
How does this choice change depending on the purpose of the project?
All of these were generated by the current Lensmap from the same public PMBOK PDF. The Map changes shape—definition, table, comparison, flow, and more—based on the question.
See all 9 PMBOK examples →Focus → Expand → Map
You choose what deserves attention. Start from a passage or visual region instead of asking AI to read the whole document for you.
When the selection is not enough, Lensmap can read nearby blocks, the same section, or related passages—and records what it added.
What you learn is retained automatically as a Map: diagrams, tables, comparisons, concise explanations, and references in the form that fits the idea.
Chat is the scratchpad. The Map is the outcome.
The point is not to make chat logs look prettier. A Map keeps how reading became understanding. The examples below were generated by the current Lensmap Map Composer from a real public CC BY project-management PDF.
PMBOK ANALYZED WITH LENSMAP
Start from a passage about a two-month delay and ask what should determine the trade-off. Lensmap reads the nearby Why / Value / Business case context only as needed, then maps how the meaning of each option changes with project purpose.
SAME PMBOK, DIFFERENT QUESTION
Selecting four passages on P3.express, PRINCE2, Scrum, and PM² and asking how the book positions them produced a four-column Comparison Map. Lensmap does not force every insight into one diagram type.
Example source: Nader K. Rad, PMBOK® Guide 7, Underneath the Surface — CC BY. The Map is a Lensmap-generated summary and structure. The book reflects the author’s personal views, not PMI’s. PMBOK® is a registered mark of Project Management Institute, Inc.
Lensmap distinguishes what you selected from context added by AI. Citations lead back to the original PDF, so the explanation never becomes detached from its source.
PDFs, indexes, Explore threads, and Maps stay local by default. Only the question and the references needed to answer it are sent to AI.
ChatGPT subscription
There is no separate API key or metered API bill to configure. Lensmap uses Codex authenticated through ChatGPT and sends only the references needed for the current Reader Workspace. Usage stays within the Codex allowance included in your ChatGPT plan.
Open source · Apache-2.0
Development setup lives in the README. This page keeps the installation section to a single entry point instead of repeating the steps.
FAQ
Chat is a supporting tool. You decide what to read; chat acts like a scratchpad for organizing understanding. The durable outcome is a Map with source references and links back to the PDF.
The design is local-first. PDFs and indexes remain local, while Codex receives the references needed for the current question plus constrained additional context when required.
Lensmap uses Codex authenticated through ChatGPT. No separate API key is required; usage is within the Codex allowance included in your ChatGPT plan.
No. Chrome’s built-in PDF Viewer remains the reading surface and Lensmap sits beside it in the Side Panel.
Yes. Enable “Allow access to file URLs” in the Lensmap extension details in Chrome.
The current packaged target is macOS Apple Silicon with Google Chrome 141 or later.