AI Context Builder 100% local

AI Context Builder

Build one Markdown context pack for any LLM. No provider-specific buttons, no upload.
Source files
PDF, DOCX, Markdown, JSON, YAML, CSV, or text
No files
Drop files here MarkDone extracts and prepares text locally in your browser.
0Files
0Context tokens
0Secret warnings
context.md
LLM-ready Markdown handoff
0
local conversions counted worldwide Your files never leave your browser. Copying or downloading context.md only adds an anonymous +1.

AI context builder

AI Context Builder for private LLM context packs.

Use MarkDone as a local LLM context builder and context.md generator for documents, notes, configs, and exports. Drop PDF, DOCX, Markdown, JSON, YAML, CSV, or text files, then build one structured Markdown context pack for any LLM without uploading source files.

context.md generatorTurn mixed files into a structured Markdown handoff with clear source boundaries and metadata.
Secret-awareDetect and optionally redact common keys, tokens, private keys, and password-like values before pasting.
Private by designPDF extraction, DOCX parsing, scanning, and token counting run in the browser.

How to build an LLM context pack

  1. Drop PDFs, DOCX files, Markdown, configs, CSVs, JSON, YAML, or text.
  2. Keep Redact secrets enabled unless you need exact raw text.
  3. Copy the Markdown for any LLM or download context.md for reuse.

When an AI context builder helps

Use it when a task needs more than one file: product notes, support logs, repository docs, API payloads, research PDFs, customer feedback, or deployment configs. The output keeps the source material inspectable before it enters an LLM workflow.

Why a generic LLM export

The output is plain Markdown with source markers, metadata, and warnings. It works across chat apps, coding agents, local models, and API workflows, so provider-specific copy buttons would add noise without adding value.

What stays local

Your documents, extracted text, token counts, and secret warnings stay on your device. MarkDone does not send file contents to a backend, model provider, or third-party conversion service.

PDF and DOCX to LLM context

Readable PDFs and Word documents can be converted into source sections alongside plain-text files. That makes it easier to combine specs, reports, notes, and configuration files into one prompt-ready context pack.

Context pack vs token counter

A token counter only estimates size. A context pack preserves file names, source boundaries, metadata, warning counts, and redacted content so the final Markdown can be reviewed before it is copied into an LLM.

Are my files uploaded when I build an AI context pack?

No. MarkDone extracts text, scans for secrets, and builds the context pack inside your browser. Your files are not uploaded to MarkDone or to any model provider.

Which files can I use?

The first version supports PDF, DOCX, Markdown, plain text, JSON, YAML, YML, and CSV files. Scanned PDFs need OCR, which is planned separately.

What does MarkDone include in context.md?

MarkDone includes a pack summary, source metadata, secret warnings, and one clearly marked source section per file.

Is this an AI context builder or a prompt generator?

It is an AI context builder. Instead of writing a prompt for you, it prepares the source material an LLM needs: extracted text, source boundaries, metadata, secret warnings, and one portable context.md file.

Can I generate context.md from PDF and DOCX files?

Yes. MarkDone can extract readable text from PDF and DOCX files in the browser, then combine them with Markdown, JSON, YAML, CSV, and plain text sources into one context.md.

Does the secret scanner guarantee that everything sensitive is removed?

No scanner can guarantee perfect detection. MarkDone catches common API keys, bearer tokens, private keys, JWTs, cloud keys, and password-like assignments locally, then shows warnings and optional redaction.

Why is there one Copy for LLM button?

The output is plain Markdown context. It is designed to work with any LLM or coding agent, so a single generic copy action is clearer than provider-specific labels.