Clean and deduplicate your CRM lead lists — entirely in your browser
CleanCrumbs is a privacy-first lead-data sanitizer. Upload a CSV or XLSX file and get clean, deduplicated, CRM-ready data in seconds. Every step — name casing, email validation, phone formatting to E.164, US and Australian state normalization, ZIP and postcode checks, and email-keyed deduplication — runs inside a Web Worker in your browser. Your raw data never leaves your device.
Why CleanCrumbs
Sales and RevOps teams waste hours fixing exported lead lists before they will import cleanly into a CRM. CleanCrumbs automates that cleanup without sending a single row to a server. Because processing is local, there is no data-handling agreement to negotiate and no privacy risk from a third-party pipeline.
What it does
- Smart sanitization — fixes casing, emails, phone numbers, and addresses automatically.
- Spreadsheet corruption repair — restores phone numbers and IDs mangled by Excel auto-formatting.
- CRM readiness scans — validates data against HubSpot and Salesforce NPSP import rules.
- Audit & Segment mode — classifies leads into CRM-ready, enrichment candidates, and junk so you stop paying to enrich dead records.
- Row-level diff view — every change is tracked: original vs. cleaned value, warnings, and merged rows.
Privacy by design
A strict Content Security Policy structurally blocks file data from leaving the browser. Authentication is handled by Clerk and payments by Stripe; neither ever receives your uploaded data. Read more about how we handle data in our privacy policy.
Frequently asked questions
Does my data leave my device?
No. All sanitization runs inside a Web Worker in your browser. Raw file data is never uploaded — only anonymous usage counts are recorded.
What file formats are supported?
CSV and XLSX files, up to 10 MB on the free plan and up to 500 MB on Pro.
Which CRMs are supported?
CleanCrumbs validates against HubSpot and Salesforce NPSP rules and exports clean CSV/XLSX ready for any CRM.
How much does it cost?
The free tier includes a 30,000-row monthly quota. Pro is a one-time $29 payment for unlimited rows and large files.
Learn more in the full FAQ, review our terms of service, or see the refund policy.