Google Maps Ludocid Extractor

A google maps ludocid is the decimal CID (the numeric customer identifier) that Google assigns to a Business Profile, and it shows up inside map URLs as the "ludocid=" parameter. This free tool pulls that value straight out of any Google Maps link or Knowledge Panel address, so you never have to dig through page source or guess. Anyone building review-request links, deep links, or Places API queries needs it, because the number points to one listing and nothing else. The review link format https://search.google.com/local/writereview?placeid=... uses the Place ID, while https://www.google.com/maps?cid=CID uses the CID, so knowing both IDs lets you assemble either link. Marketers, agencies, and multi-location brands rely on this decimal identifier to keep every profile straight and avoid pointing customers at the wrong storefront.

What is a Google Maps ludocid?

A google maps ludocid is the plain decimal form of a listing's CID, the identifier Google uses internally to tie a map pin, reviews, photos, and hours to a single Business Profile. When you open a business in Google Maps or click through from a Knowledge Panel, that decimal number is frequently baked into the URL as "ludocid=1234567890123456789". The word looks technical, but it is just a label for the same CID value that also appears in classic short links like maps.google.com/?cid=1234567890123456789. Because the value is a stable numeric key, it does not change when the business edits its name, moves its pin slightly, or updates its category, which is exactly why it is so useful for tracking a listing over time.

People confuse the ludocid with other identifiers, and that confusion causes broken links. The CID is one thing, the Place ID is another, and the internal feature ID (FID) is a third. They describe the same physical business but serve different systems. This extractor reads a URL you paste, isolates the ludocid, and hands you a clean value you can drop into a link builder, a spreadsheet, or an API request. Instead of hunting through a long, messy address full of coordinates and tracking parameters, you get the one number that matters.

How do you extract a google maps ludocid?

To extract a google maps ludocid, copy the full Google Maps or Knowledge Panel URL for the business, paste it into the tool above, and read the decimal CID it returns. The process takes a few seconds and works whether the value sits in a "ludocid=" parameter or is hidden inside an encoded map link that needs decoding first.

1. Open the business in Google Maps, or find its Knowledge Panel in a normal Google search result on the right side of the page.
2. Copy the full URL from your browser address bar, or right-click the business name and copy the link. Do not trim it, because the identifier can live in the middle of a long string.
3. Paste the URL into the extractor field above and run it.
4. The tool scans the address for a "ludocid=" value, a "?cid=" value, or an encoded data block, then normalizes whatever it finds into a single decimal CID.
5. Copy the returned number. That is your google maps cid, ready to paste into a review link, a deep link, or a Places API call.

If a URL does not contain the value directly, the extractor attempts to decode the hexadecimal feature ID that Google embeds in modern map links and convert it to the matching decimal CID. The output is always the clean number, with no coordinates, no zoom level, and no session tokens attached.

Why does the google maps ludocid matter for local SEO?

The google maps ludocid matters because it is the shortest reliable bridge between a Business Profile and the links you want to build around it. The most common use is the google review link. When you want happy customers to leave a rating, you can send them to https://www.google.com/maps?cid=CID and the profile opens with the review prompt ready. Using the exact CID means the link never lands on a similarly named competitor or a stale duplicate listing, which protects both your reputation and your click-through rate.

Beyond review links, the value powers deep links and audits. A deep link built on the CID opens the correct listing on desktop and mobile, so email campaigns, printed QR codes, and in-store signage all resolve to the same place. For agencies running audits, the ludocid becomes the join key that ties a client's map pack rankings, review count, and profile edits together across tools and reports. If you manage rank tracking with a platform like ProMapRanker, having the correct identifier on file means every scan measures the intended profile rather than a look-alike.

It also solves the duplicate-listing problem. Franchises, clinics, and dealerships often end up with two or three Business Profiles for the same address after a rebrand or an ownership change. Each duplicate carries its own CID even when the names read identically. Extracting the ludocid from each URL lets you tell them apart, decide which profile is authoritative, and route your review links, citations, and API queries to the survivor rather than the ghost. That single act of disambiguation prevents months of split reviews and confused customers.

There is a reporting angle too. Because the CID stays constant while everything visible about a listing can change, it makes an ideal anchor for time-series data. If you log the CID alongside weekly rank positions, review totals, and photo counts, you can prove growth or spot a sudden drop without worrying that a renamed profile broke your history. The same value lets you match a Business Profile to third-party review widgets, citation databases, and internal CRM records, so a customer who leaves a rating can be tied back to the exact location they visited. For local SEO work at scale, that clean join key quietly saves hours of manual reconciliation every reporting cycle.

Understanding the IDs behind a listing

Every Google listing carries a small family of identifiers, and knowing which is which stops most broken-link headaches. The three you meet most often are the CID (the ludocid), the Place ID, and the FID. They are not interchangeable, but they all describe the same business, and each one plugs into a different Google system.

Ludocid (CID)

The ludocid is the decimal CID, a long integer that identifies the Business Profile itself. It is the value you feed into cid-based map links and the one most directly tied to reviews. Because it is a decimal number, it is easy to store in a database and compare across listings without any encoding step.

Place ID

The Place ID is an alphanumeric string, usually starting with "ChIJ", that the Google Places API uses to look up details, photos, and reviews programmatically. The write-review URL https://search.google.com/local/writereview?placeid=... takes a Place ID, not a CID, so if you want that specific review flow you need the Place ID rather than the ludocid. The two identify the same business but live in different systems.

FID

The FID (feature ID) is a hexadecimal pair such as "0x0:0x112210f...". Modern Maps URLs often carry the FID instead of a plain "ludocid=" parameter, and the second half of the FID is simply the CID written in hexadecimal. Converting that hex block to decimal gives you back the same google maps cid, which is exactly what this extractor does behind the scenes.

How they map to a review link

To build a google review link, you have two clean paths. The CID path uses https://www.google.com/maps?cid=CID, which opens the listing and its review prompt. The Place ID path uses https://search.google.com/local/writereview?placeid=PLACE_ID, which jumps straight into the review form. A Knowledge Panel URL usually hides the CID, so extract the ludocid first, then choose whichever link format fits your campaign. Keeping the CID, Place ID, and FID mapped in one row of a sheet means you can regenerate any link on demand.

Best practices and common mistakes

• Always paste the full URL. The identifier can sit deep inside a long address, and trimming the string is the number one reason an extraction returns nothing.
• Do not mix up the CID and the Place ID. A cid value dropped into a writereview?placeid= link will fail, and a Place ID dropped into a ?cid= link will not open the profile.
• Verify the result before you publish. Open https://www.google.com/maps?cid=CID once and confirm it lands on the correct business, especially for common names.
• Watch for duplicate listings. If two URLs return different CIDs for what looks like the same store, you have found a duplicate that needs cleanup before any link goes live.
• Store the ludocid, Place ID, and business name together. Rebuilding links later is trivial when the identifiers are already recorded next to each listing.
• Re-extract after a major profile change only if the URL structure changed. The CID itself is stable, so you rarely need to refresh it.

When should you use this ludocid extractor?

Reach for this ludocid extractor whenever a project depends on pointing to one exact Business Profile. A handful of everyday scenarios cover most of the demand, and each one gets easier once you have the decimal CID recorded next to the business name.

• Building review-request links. You want a short, dependable google review link for email footers, receipts, and thank-you cards. Extract the CID once, build the ?cid= link, and reuse it everywhere with confidence that it opens the right listing.
• Agency audits. When you inherit a client with dozens of locations, pulling each ludocid gives you a stable key to line up rankings, reviews, and profile data across your reporting stack without relying on business names that repeat.
• Multi-location cleanup. Franchises and clinics accumulate duplicate profiles. Extracting the CID from every URL lets you spot the duplicates, pick the authoritative listing, and consolidate reviews and citations onto it.
• API queries. Developers wiring up the Places API or an internal dashboard need a reliable identifier to seed each lookup. The decimal CID, or its matching Place ID, feeds those queries cleanly.

Frequently asked questions

Where do you find the ludocid in a Google Maps URL?

Open the business in Google Maps or its Knowledge Panel, then look at the link. The value after ludocid= or the number after cid= is the identifier this tool extracts. Paste the full URL into the extractor above and it isolates that number for you in one step, ready for a review link or API call.

Is the ludocid the same as the google maps cid?

Yes. The ludocid is simply the decimal form of the CID that a Business Profile carries, exposed in map URLs through the "ludocid=" parameter. When you extract a ludocid you are extracting the same google maps cid, just labeled the way Google writes it inside certain link formats.

How do I turn a ludocid into a google review link?

Take the decimal CID the extractor returns and drop it into https://www.google.com/maps?cid=CID. That link opens the listing with its review prompt ready. If you prefer the direct review form, you will need the Place ID for the https://search.google.com/local/writereview?placeid= format instead.

Why is there no ludocid in my Knowledge Panel URL?

A Knowledge Panel link often stores the identifier as an encoded feature ID rather than a plain "ludocid=" value. The extractor handles this by decoding the hexadecimal block and converting it back to the decimal CID, so you still get a clean number even when the parameter is not visible.

Does the ludocid ever change?

The CID is stable and rarely changes for an active Business Profile, even after edits to the name, hours, or category. It can effectively disappear only if the listing is deleted or merged. That stability is why the value works so well as a long-term tracking key.

Is this tool free to use?

Yes, the extractor above is free and needs no login for a quick lookup. If you want to save identifiers, monitor rankings, and audit many listings at scale, a ProMapRanker account adds those features on top of the basic extraction.

Ready to track the listings you extract?

Pulling the identifier is step one. Once you know which profiles matter, you can watch how they rank across your service area and turn that data into review links and reports. start free with 150 credits and connect the CIDs you extract to live map-pack rank tracking.

Related tools

• Google Maps CID Extractor
• Google Place ID Finder
• Place ID Lookup
• Google Maps Link Decoder
• Google Review Link Generator

For official reference, see Google's Business Profile Help and the Places API Place ID documentation.