Lead List Cleaner — Local Edition

Clean a messy lead list in your browser: dedupe, validate, and grade every row A–D — with zero uploads. Your data never leaves your computer.

Your CRM export is lying to you about how many leads you actually have

Somewhere in that spreadsheet are the same company three times (once as "Acme Inc", once as "Acme"), phone numbers that were never real, and "hot" leads nobody has touched in 14 months. Calling down that list in order burns your best selling hours on your worst rows.

Lead List Cleaner fixes the list first — in about a minute, entirely on your own machine.

What it does

1. Dedupes three ways — same phone, same email, or same company + contact. Company names are compared with legal suffixes stripped, so "Blue Ocean Software Inc" and "BlueOcean Software" collide the way they should.
2. Validates contact formats — international phone length and pattern checks that catch the obvious fakes (all-same digits, sequential runs, too-short numbers), toll-free detection, and email syntax checks.
3. Grades every row A–D with the reasons printed next to it. 100 points: completeness 40, reachability 40, freshness 20, with hard caps (stale leads, email-only leads, and unreachable rows can't sneak into grade A). No black-box score — if a row is a B, the row itself tells you why.
4. Exports your call order — all rows, A+B only, a single grade, or just the duplicates list, as clean UTF-8 CSV for Excel, Sheets, or your CRM.

The part nobody else leads with: nothing is uploaded

This is a single HTML file that runs 100% locally in your browser. No account, no server, no "we process your file in the cloud." Your lead list — your customers' names, phone numbers and emails — never leaves your laptop. That's not just a privacy preference; for anyone handling EU/UK contacts it's the difference between "no personal data transferred" and a GDPR headache. You can verify by loading it with your network disconnected — CSV cleaning still works.

Yes, an AI chatbot could sort a list for you — after you upload your customers' phone numbers to it, and after it quietly drops or mangles a few rows in a large paste. This tool is deterministic: same input, same output, every row accounted for.

Who it's for

• Solo founders and small sales teams working lists of 50–5,000 rows from spreadsheets
• Anyone merging lists from events, webinars, referrals and a CRM export into one working list
• People who can't (or won't) upload customer data to cloud tools

Honest limits

• This is a format check. It cannot tell you a number is disconnected or an inbox is dead — tools that promise that are either dialing the numbers or guessing.
• It's a file, not a CRM: no dialer, no email sending, no enrichment. It makes the list you already have worth calling.
• The on-screen preview caps at 500 rows; exports include everything. Very large files (10,000+ rows) may take a few seconds.

What you get

• lead-cleaner-en.html — the tool (works in any modern browser, no install)
• sample-data.csv — the 30-row sample that's also built into the tool
• QUICK-START.md — 2-minute guide, including the full grading rules

Pricing

$19 one-time payment

Free updates for this edition. 14-day money-back guarantee — if it doesn't save you time on your first list, email us for a refund.

Buy for $19

Secure checkout and delivery are handled by Creem (merchant of record). Windows and Mac — it's one HTML file in a browser.

FAQ

Is my data uploaded anywhere?
No. The file runs locally in your browser; there is no server component.

Why not just use ChatGPT/Claude for this?
For 20 rows, do. For 500+, LLMs drop and alter rows, and you'd be pasting customers' personal data into a cloud service. This tool is deterministic and local.

Does it check if numbers are disconnected?
No — and it says so on the box. Format validation only.

Windows/Mac?
Both — it's one HTML file in a browser.