n8n: Extract text from any file with AI

n8n is an automation platform that connects apps, APIs, and services through visual workflows. It supports conditional logic, file handling, and integrations with AI models, making it a practical choice for teams that need to process documents at scale. If your business receives invoices, contracts, scanned receipts, or audio recordings on a regular basis, manually extracting the relevant data from each file quickly becomes a bottleneck.

This guide covers how n8n handles document extraction workflows, what the setup requires, and whether it fits your situation.

TL;DR

• Problem: Valuable information is locked inside files and requires manual effort to extract.
• Solution: n8n combines file ingestion, conditional routing, and AI-based extraction in a single automated workflow.
• Outcome: Mixed document inputs are converted into structured, usable text without manual processing.

What is n8n and how does it handle file extraction?

n8n is a workflow automation tool that functions as the orchestration layer in a document processing pipeline. Files are received, analyzed, routed to the appropriate extraction method, and converted into structured text that can be stored or forwarded to connected systems.

Its core approach to document extraction relies on three components working together: file ingestion from a trigger source, conditional routing based on file type, and AI-assisted interpretation to produce clean output. The workflow handles each document type separately, which avoids forcing every file through a single extraction path.

Supported file types in a standard n8n document workflow include PDFs, images, spreadsheets, audio recordings, and scanned documents. Each type connects to a different processing node, such as an OCR service for scanned images or a transcription API for audio files.

How the extraction workflow is structured

The workflow begins with a trigger. Files can arrive via email attachment, cloud storage sync, webhook, or a connected form. Once received, n8n evaluates the file type and routes it to the correct extraction node.

Text-based PDFs pass directly to an AI model for structuring. Scanned documents and images are processed through an OCR service first, then forwarded for interpretation. Audio files go through a transcription API before the resulting text reaches the AI layer.

The AI agent at the end of the pipeline focuses on interpretation rather than raw extraction. It takes the output from each route and applies a consistent structure, regardless of the original file format. This separation makes the workflow easier to maintain and adjust when individual steps need updating.

The structured output can then be written to a spreadsheet, database, CRM, or accounting system without additional transformations.

Pricing

n8n offers a free self-hosted Community Edition with unlimited executions and access to all integrations. Cloud plans start at €24 per month for the Starter tier, which includes 2,500 executions per month. The Pro plan costs €60 per month with 10,000 executions. A Business plan is available at €800 per month for larger teams requiring SSO and advanced collaboration features.

Pricing is based on executions rather than steps. One complete workflow run counts as one execution, regardless of how many nodes it contains.

Strengths

n8n handles multiple file types within a single workflow without forcing them through one extraction method. Conditional routing allows each file type to follow a reliable, independent processing path.

Separating raw text extraction from AI-based structuring improves clarity. OCR and transcription nodes focus on accuracy, while the AI agent focuses on interpretation. Because n8n integrates with a wide range of tools, the same structured output can be reused across multiple systems without additional data transformations.

Limitations

Setting up credentials for external services takes time and requires configuration experience. AI-based extraction relies on paid APIs, so usage costs need monitoring, particularly for high-volume or media-heavy workflows.

Workflows also require explicit error handling. Unsupported file types, empty extractions, or duplicate triggers must be addressed to prevent silent failures or inconsistent output. Privacy is another consideration: documents often contain sensitive data, and the choice of where files are processed and which AI providers receive that data requires deliberate decisions.

Verdict

n8n provides a solid foundation for AI-powered document extraction. Its combination of conditional routing, file handling, and structured AI output makes it practical for scenarios that go beyond basic OCR or single-format processing.

For teams that need to convert diverse document inputs into reliable, structured data, n8n offers a flexible and extensible approach. It is best suited to operators or developers who are comfortable configuring workflows and managing external API credentials. Get started at n8n.

What should you look for when choosing an AI tool for document extraction?

Pricing transparency matters when evaluating automation tools for document workflows. Look for a plan that matches your expected execution volume before committing, as execution-based billing can scale unexpectedly with polling-heavy setups. A free tier or self-hosted option reduces the risk of testing before investing. Workflow fit is equally important: the tool should support your file types natively and integrate with the systems where structured output needs to land.

Is there a free AI tool for document extraction workflows?

Yes. n8n's Community Edition is free to self-host with unlimited executions and full access to all integrations. It requires a server to run but has no usage caps. For teams that prefer a managed cloud option, the Starter plan at €24 per month provides 2,500 executions, which is sufficient for low-volume or event-driven document workflows.

FAQ

Is n8n free to use?

n8n offers a self-hosted Community Edition that is free with no execution limits. Cloud plans start at €24 per month for the Starter tier. A 14-day free trial is available for cloud plans without requiring a credit card for Starter and Pro. The self-hosted version includes all integrations and can be used indefinitely at no cost.

Who is n8n suitable for?

n8n is best suited for developers, operations teams, and technical users who need flexible, multi-step automation workflows. It is not a plug-and-play tool: building and maintaining workflows requires comfort with configuration, API credentials, and occasional debugging. Teams with some technical capacity and a need for custom document pipelines are the primary fit.

Can n8n handle scanned documents?

Yes. Scanned documents can be processed using an OCR service connected as a node in the workflow. The OCR output is then passed to an AI agent for structuring. The specific OCR provider needs to be configured separately, and credentials must be set up before the node can process files.

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