Technical notes

A practical field manual for browser PDF work.

Practical references for document structure, local processing limits, OCR behavior, and safe release workflows.

Local runtimePDF structureRelease checks
7 min

PDF Internals

Understand XREF tables, object streams, page trees, and why some PDFs fail in browser tools.

Use when: Use this when a file will not open, repair, or preserve page order.
Read note
8 min

WASM Security

Learn what the browser sandbox helps with, and what it does not claim to solve.

Use when: Use this to evaluate local processing claims before handling sensitive files.
Read note
6 min

OCR Mechanics

See how image quality, page rendering, and browser memory shape OCR results.

Use when: Use this before OCR on scans, receipts, forms, and low-resolution PDFs.
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9 min

Document Sanitization

Review metadata removal, redaction risks, flattened exports, and release checks.

Use when: Use this before sending legal, HR, medical, or finance documents outside your team.
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Recommended paths

Start with the decision you need to make.

Privacy model

Understand what stays local and what the browser can realistically enforce.

Open path

GDPR workflows

Review local-first handling for privacy-sensitive document teams.

Open path

HIPAA guide

See when upload-based tools need extra compliance controls.

Open path