# sieve - Accurate Data From Unstructured Sources

> sieve turns websites, PDFs, filings, reports, and other unstructured sources into accurate, ready-to-use data. AI extraction plus expert human validation, delivered through an API, a spreadsheet, or your inbox.

Any team that needs data out of a source that was never designed to give it up can use sieve. We combine advanced AI models with human-in-the-loop validation, so the output is clean and structured in minutes rather than days. Customers use us across public records, government data, e-commerce and competitor pages, research publications, regulatory filings, and internal document backlogs.

## Core Services

- [Homepage](https://usesieve.com): Overview of the platform and how extraction plus validation works
- [Document Processing](https://usesieve.com/document-processing): Extract data from PDFs and documents with human-level accuracy
- [Web Scraping](https://usesieve.com/web-scraping): Extract data from any website with AI-powered scraping
- [Monitoring](https://usesieve.com/monitoring): Track pages and sources over time and get alerted when they change
- [Convert](https://usesieve.com/convert): Turn a web page or document into a spreadsheet
- [API Documentation](https://usesieve.com/docs/api-reference): Complete API reference for integrating sieve into your workflows
- [Getting Started Guide](https://usesieve.com/docs/getting-started): Quick start guide with code examples in Python, R, and JavaScript

## Use Cases & Examples

- [NYC Rent-Stabilization Records](https://usesieve.com/blog/nyc-rent-stabilized-map): Turning scattered housing records into a searchable map
- [Restaurant Health Inspections](https://usesieve.com/blog/restaurant-health-inspections-map): Structuring public inspection data across a city
- [Building Violations](https://usesieve.com/blog/nyc-building-violations-map): Aggregating a month of municipal violation records
- [Global Port Records](https://usesieve.com/blog/building-global-traffic-datasets-fragmented-port-records): Building one dataset from fragmented shipping sources
- [Historical Time-Series](https://usesieve.com/blog/unlocking-historical-time-series-data): Recovering series locked in custom publications
- [Regulatory Filings](https://usesieve.com/blog/verifying-filing-data): Replacing hours of manual filing verification
- [Commodities Reports](https://usesieve.com/blog/extracting-accurate-commodities-export-data): Keeping a pipeline stable across changing report formats

## Key Features

- [Excel Add-in](https://usesieve.com/docs/excel-add-in): Pull sieve results directly into a spreadsheet
- [Real-time Processing](https://usesieve.com/document-processing): Process documents in minutes with our distributed infrastructure
- [AI-Powered Extraction](https://usesieve.com/web-scraping): Adapts to site changes and handles edge cases automatically
- [Human Validation](https://usesieve.com/faq): Expert reviewers check the output, so accuracy does not depend on the model alone

## Company Information

- [About Us](https://usesieve.com/about): Learn about our team and Y Combinator backing
- [FAQ](https://usesieve.com/faq): Answers to common questions about pricing, security, integration, and accuracy
- [Contact](https://usesieve.com/contact): Get in touch for demos or custom integrations

## Optional

- [Waitlist](https://usesieve.com/waitlist): Join our waitlist for early access