Lumin

Lumin provides a cloud workspace for handling PDF documents from start to finish.

Updated April 2026

ProposalsAI Sales ToolsSales Tools

Overview: What is Lumin?

Teams can edit text, collect signatures, and leave comments in real time. The platform connects directly with Google Workspace and other common tools.

Lumin is a document workflow platform built around PDF editing, e-signatures, and team collaboration. Users upload files to a cloud workspace where they can modify text, annotate pages, and request signatures without switching applications. A built-in template library and AI-generated agreements speed up routine paperwork. Real-time commenting lets multiple stakeholders review the same file simultaneously. Integrations with Google Workspace, OneDrive, Slack, and Chrome keep documents connected to existing workflows. The product serves startups, small businesses, and mid-market companies looking to reduce back-and-forth on approvals and contracts.

Fit: Ideal customer profile.

Startups, small businesses, and mid-market teams that edit, sign, and approve PDFs inside Google Workspace and want to cut down on document back-and-forth.

Seed
SMB
Mid-market

Capabilities

Key features.

Edit PDF text directly in the browser

Collect legally binding e-signatures

Real-time commenting and annotation

AI-generated agreement drafts

Free template library for common documents

Google Workspace and OneDrive integrations

Automated sending and signing workflows

Workspace admin controls and domain management

Enterprise SSO and advanced security options

Chrome extension for quick access

Usage

How to use Lumin.

Upload a PDF or start from a template, then use the editor to modify text, add annotations, or insert signature fields. Invite collaborators to review and sign directly in the browser. Track progress and store completed files in the shared workspace.

Cost

Pricing.

$9/ Per team

Free plan available with 3 docs per month. Paid tiers start at $9 per user monthly. A 7-day trial is offered.

Free

$0.00

3 docs/month
Annotate docs
Sign PDFs
Basic tools
Free access
No collaboration

Starter

$9.00

10 docs/month
Google integration
Sign PDFs
Retain access
Student essential
Budget friendly

Pro

$19.00

30 docs/month
Edit PDF text
Split documents
Document collaboration
Per team pricing
Try free

Business

$99.00

200 docs/month
Manage workspace
Domain control
Google & OneDrive
Customer success
Admin invites

Enterprise

$custom

Advanced security
Storage control
Single workspace
Enterprise SSO
Custom pricing
Dedicated manager

At a glance

Quick facts.

Stack position: Proposals
Category: AI Sales Tools, Sales Tools
Best for: Seed, SMB, Mid-market
Pricing: From $9/Per team

Subcategories

AI Copywriting
E-Signature

Follow Lumin

Questions

Frequently asked.

How do you get started with Lumin?

Upload a PDF to the cloud workspace, then use the editing toolbar to modify text, add comments, or insert signature fields. Invite teammates to review and sign in real time.

What does Lumin cost?

A free tier covers basic editing with a 3-doc monthly limit. Paid plans range from $9 to $99 per month, and an Enterprise option with custom pricing is available.

Why use Lumin over other PDF tools?

It combines editing, e-signatures, and real-time collaboration inside Google Workspace. Built-in templates and AI drafting also reduce time spent on routine agreements.

How does Lumin handle document workflows?

Users upload PDFs to a shared cloud workspace where they can edit content, request signatures, and manage approvals. Everything stays in one place connected to tools like Slack and Google Drive.

Is there a free version of Lumin?

Yes. The free plan includes basic PDF editing and signing for up to three documents per month. It is a straightforward way to test the platform before upgrading.

Does Lumin integrate with other platforms?

It connects with Google Workspace, OneDrive, Slack, and Chrome through direct integrations. These connections let teams keep documents inside their existing toolset.

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