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Free tool · LinkedIn ABM
LinkedIn Company List Formatter
Paste your account list or upload a CRM export. The formatter maps your columns to LinkedIn's headers, cleans domains and page URLs, converts countries to two-letter codes and removes duplicates. Nothing leaves your browser.
- Free, no sign-up
- Runs in your browser
- Checked 19 October 2026
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How it works
How to use the LinkedIn Company List Formatter
- Upload or paste your list with a header row.
- Check the verdict and notes for size and match warnings.
- Download the CSV and upload it in Campaign Manager as a company list.
| What | How it's worked out |
|---|---|
| Headers | companyname, companydomain, linkedincompanypageurl, companycountry (only columns with data) |
| Domains | Normalised from URLs and emails |
| Countries | Names converted to ISO two-letter codes where recognised |
| Limits | LinkedIn recommends 1,000+ companies; maximum 300,000 per list |
From our media team
How to use the result
- Include a domain or page URL for every company. Names alone match worst.
- One list per audience. LinkedIn takes one CSV per list; upload a new file when the list changes.
- Exclude customers and open deals unless the campaign is for expansion.
Read next
- How to send AI-identified companies to a LinkedIn matched audienceStep by step: export companies identified from ChatGPT ads and AI answers, format the LinkedIn company list CSV, upload it or sync it by API, and wait for matching.
- Target account list hygiene: clean lists match better and cost lessWhy messy account lists waste ABM budget and how to clean them: one domain per company, duplicates and subsidiaries, free email domains, customer exclusions,…
- LinkedIn company-level reporting for ABM: what you can see, and its limitsWhat LinkedIn reports by company: the ads API company pivot, the Company Engagement Report and Website Demographics, with their thresholds, delays and privacy limits.
- LinkedIn ABM budget: how to work it out from your account listHow to set a LinkedIn ABM budget bottom-up: matched accounts, buying committee members, impressions per member, CPM, daily budget, audience minimums (300 members,…
Questions
Straight answers.
What columns does a LinkedIn company list need?
At least one of companyname, companydomain, companywebsite or linkedincompanypageurl. More identifiers improve matching.
What are the size limits?
LinkedIn recommends at least 1,000 companies and accepts up to 300,000 per list.
How long does matching take?
Up to 48 hours after upload.
Is my account list uploaded to AnswerBid?
No. The formatter runs in your browser; the file only leaves your device when you upload it to LinkedIn.
More free tools
Related tools
Sources: LinkedIn Marketing API: Matched Audiences list uploads (Microsoft Learn).
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