Domain Name Evaluator

Think of a domain name the way a retail landlord thinks about a storefront address. Location (extension), frontage width (length), signage clarity (memorability), visual identity (brandability), and foot traffic potential (SEO) each contribute to the property value — no single factor dominates, but a weakness in any one pulls the total down. This tool runs the same five-factor appraisal on any domain string you enter.

The score is built from five components that each carry a fixed weight adding up to 100 points. Length contributes up to 25 points, extension quality up to 20, memorability up to 20, brandability up to 20, and SEO potential up to 15. Each component is scored independently, then summed and clamped between 0 and 100.

The grade assigned at the end maps the numeric score to a letter using standard academic thresholds: 90 and above earns A+, 80 to 89 earns A, and so on down to F for anything below 50. The grade is a communication shortcut — it lets you compare candidates at a glance without reading every sub-score.

Use this evaluator when you are comparing a shortlist of available domains before registration. It works best at the shortlist stage — once you have already filtered out obvious problems (trademarked terms, offensive strings) and want a data-driven tiebreaker between two or three candidates. It is also useful when evaluating an aftermarket or expired domain to decide whether the asking price is worth pursuing.

The evaluator is less useful after you have already built a brand on a domain. At that stage, the name has accrued recognition that no algorithm can measure — a low-scoring domain with ten years of backlinks and brand recall can outperform a perfect-score domain with zero history. Score is a pre-registration tool, not a retrospective audit of an established business.

Do not use the score as a sole acquisition criterion for premium domains. A domain priced at several thousand dollars may score 82 but carry category authority or exact-match search value that the structural scoring model does not capture. The score tells you about the string itself; it cannot tell you about the market or the traffic the domain currently attracts.

Registering without checking the score first. Many founders pick a domain because it sounds clever in a meeting room, then discover after registration that it is fifteen characters, hyphenated, and ends in .biz. The registration fee is small; the rebrand cost later is not. Run any candidate through the evaluator before you spend money or print business cards.

Over-indexing on the name and ignoring the extension. A twenty-point weight means the extension accounts for a fifth of your total score. Choosing a weak extension to get a short name is a real trade-off — techpro.io scores a respectable 82, but the same name on .com would score higher. Before accepting a non-.com extension, verify whether the .com is available or negotiable, because your marketing will always fight the default expectation.

Adding hyphens to rescue an unavailable name. When brandname.com is taken, the temptation is to register brand-name.com instead. Every hyphen costs 5 memorability points and forces every spoken mention of the domain to include the word 'hyphen' or risk losing traffic to the unhyphenated version. A different short word or a stronger extension almost always outscores a hyphenated workaround.

The length component awards points on a step function tied to the character count of the name part only (the TLD is excluded). Names up to 4 characters earn the full 25 points. As the name grows longer each tier surrenders more points — a name of 17 characters earns only 3 points from this component alone.

Brandability uses the vowel ratio of the letter-only characters in the name. Count the vowels, divide by the total letter count, and check whether the result falls between 30% and 50%. For the example domain shop.com, the letters are s, h, o, p — one vowel out of four letters, a ratio of 25%. That falls just below the lower bound of the optimal range, earning 15 out of 20 brandability points.

Memorability starts at 20 and subtracts for hyphens, numerals, and repeated characters. Each hyphen costs 5 points, each digit costs 3 points, and each run of three or more identical consecutive characters costs 4 points. The component never goes below 0 regardless of how many penalties apply. SEO potential rewards short names on common English words with no hyphens, scaling down to 3 points for long or hyphenated strings. The five component scores are then added and the result clamped to the 0–100 range.

The scoring model treats each component as independent, which is a deliberate simplification. In practice, length and memorability interact: a ten-character domain with no hyphens, numbers, or repeated patterns can be easier to remember than a five-character string of hard consonants. The brandability vowel-ratio heuristic captures part of this, but it cannot detect whether a name is a real dictionary word (which carries its own memorability advantage the model does not reward). If two domains score within five points of each other, human testing — say a quick recall experiment with a few colleagues — is more reliable than the numeric difference.

Extension scoring is frozen at registration-time conventions and does not update for market shifts. The .ai extension has gained significant acceptance in AI-product naming and is likely underweighted here for that vertical. Similarly, country-code TLDs used as vanity extensions (del.icio.us, t.co) score poorly on the extension component but can build strong brand recognition. Treat the extension score as a prior, not a verdict.