SiftData cleaning for CRM imports

Messy contact list? Diagnose it and fix it in seconds.

Sift is a free, browser-based data cleaner for CRM imports and migrations. Drop a CSV, Excel, or PDF and it audits the file, shows every problem, then dedupes, normalizes, and maps your data to the schema you're importing into. Deterministic and audit-first: you approve every change, nothing is uploaded, and it is GDPR-friendly by design.

Loading the tool. It runs entirely in your browser; your data never leaves your device.

BeforeAfter
mARIA→Maria
us→United States
sarah@@acme.com→sarah@acme.com
1,000→1000

What Sift does

  • Clean the usual mess: stray spaces, inconsistent casing, placeholder blanks, broken emails, mixed dates, currency text.
  • Normalize phone numbers (E.164-style), countries, and UK/US/Canadian postcodes.
  • Dedupe exact and fuzzy duplicates with survivorship rules to build one golden record per person.
  • Reshape: combine or split columns, look up and join from a second file, filter rows, tag a whole list.
  • Score and qualify leads by persona, then extract the segment you want.
  • Map columns to your CRM's import template and pre-flight whether the file will actually import.
  • Export a clean file, a deduped accounts/companies file, or a hygiene report.

Who it's for

  • RevOps and CRM admins running a migration or import (Salesforce, HubSpot, Dynamics, Zoho, Pipedrive).
  • Field and event marketers prepping a lead or attendee list after a conference.
  • Sales and data ops cleaning and deduping contact and account lists.
  • Privacy- or compliance-constrained teams (legal, healthcare, finance, EU/GDPR) who can't paste customer data into an online tool or an LLM.

Why Sift

  • Private by architecture. Runs entirely in your browser, nothing uploaded. The opposite of pasting your list into ChatGPT or a web cleaner.
  • Import-readiness, not just cleaning. Maps to your target's schema and checks it will actually import, with one-click fixes.
  • Deterministic and auditable. Every change is a rule you approve with a before-and-after diff and an audit trail. No AI black box, no account.

Frequently asked questions

What is Sift?

Sift is a free, browser-based tool that cleans a messy CSV, Excel, or PDF file and gets it import-ready for a CRM, entirely on your device.

Is my data uploaded anywhere?

No. Sift runs 100% in your browser; your rows never leave your device and there is no server to send them to.

How is it different from cleaning data in ChatGPT?

Sift is deterministic and private: every change is a rule you approve with a visible before-and-after diff, nothing is sent to an AI model, and your data stays on your machine.

Is Sift GDPR-compliant?

Sift is GDPR-friendly by architecture: your file is processed in your browser and never uploaded, so Sift never receives or processes your customer data and never becomes a processor of it. Nothing to store, transfer, or breach. Analytics are cookieless, so no consent banner is needed. How that maps to GDPR →

Does it work with HubSpot, Salesforce, and Dynamics?

Yes. Map your columns to the destination's import template and Sift checks required fields, types, and allowed values before you import. It also generates an accounts file for CRMs that need accounts created first.

Can it dedupe contacts?

Yes, exact and fuzzy dedupe matching on email, phone, or a fingerprint, with survivorship rules for one golden record per person.

Is it free?

Yes. No account, no paywall, no collection of your file's data.

How big a file can it handle?

Up to about 150MB in standard mode, and a large-file mode powered by in-browser DuckDB for hundreds of thousands of rows.

Is Sift related to Apple's SwiftData?

No. Sift (siftdata.app) has no connection to SwiftData, Apple's data persistence framework for iOS and macOS developers. Sift is a browser-based tool for cleaning CSV and Excel files before a CRM import. If you were looking for the Apple framework, it lives at developer.apple.com.

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