Content Gap Analyzer

The Content Gap Analyzer is a free online tool that compare your site. It runs entirely in your browser with no installation or sign-up needed.

Priority is based on topic overlap with your existing content. Topics partially similar to what you have (partial matches) are High priority since you already have domain authority there.

Yes. Click "Download CSV" to export the full gap analysis with priority scores and similarity classifications.

Yes, the Content Gap Analyzer is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.

Absolutely. The Content Gap Analyzer processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Content Gap Analyzer is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Content Gap Analyzer in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Yes, the Content Gap Analyzer is built following current Google Search guidelines and best practices. We regularly update the tool to reflect changes in search engine requirements.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Content Gap Analyzer works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

Both are topics your competitor covers that you don't, but they differ by how close they are to your existing content. A partial gap is a competitor topic that meaningfully overlaps one of your pages without being the same — for example, they have "running shoes for women" and you have "best running shoes." The tool shows which of your pages it most resembles, because the smartest move is often to expand that page rather than write a new one. A unique gap has no real overlap with anything you publish; it's a genuine blind spot in your coverage and usually a larger net-new opportunity. Near-identical matches are classed as "exact" and filtered out entirely, since they aren't gaps. Paste your two lists and the analyzer tags every competitor topic as partial or unique automatically.

Either works, and you can mix both in the same list — one item per line. When you paste a full URL, the analyzer strips the domain and reads the path, so "competitor.com/budget-running-shoes" is compared as the topic "budget running shoes." When you paste a plain phrase like "keyword research guide," it's compared as-is. This flexibility lets you feed it a raw URL export from a crawl or sitemap on one side and a hand-written list of planned topics on the other. Because matching is based on the words in each line, descriptive, readable slugs and phrases give cleaner results than cryptic IDs or query-string URLs. Drop your URLs or topics into the two boxes, click Analyze, and the tool normalizes them for you before comparing.

It uses token overlap, a Jaccard similarity score: it splits each topic into individual words, ignoring words of two characters or fewer, then divides the number of shared words by the total number of unique words across both. So "best running shoes" and "best trail running shoes" share two of four unique words and score moderately, while two topics with no common words score zero. That score sorts each competitor topic into exact, partial, or unique. This is a structural, word-level comparison, not a meaning-based one, so it won't recognize synonyms — "car" and "automobile" look unrelated to it. Keeping your topic wording consistent across both lists gives the most reliable matches. Paste your lists and the tool runs this scoring on every line the instant you click Analyze.

It seems backwards, but it's deliberate. Priority leans on two signals: how much a topic overlaps your existing content, and whether it looks like a high-value format — guides, how-tos, tutorials, "best" and "top" lists, reviews, and comparison or "vs" pages. A partial-match topic in one of those formats gets flagged High, because you likely already hold some topical authority nearby and can fill the gap fast by expanding a page you own. A completely unique topic with no overlap is a real opportunity, but it's a cold start with no existing authority, so it ranks lower for quick wins. The idea is to sequence your work, not to say unique topics don't matter. Run the analysis and tackle the High-priority partial matches first for the fastest results.

No, and it's not meant to. This is a structural comparison of topic coverage: it tells you what a competitor publishes that you don't, based purely on the two lists you supply. It does not pull live search volume, keyword difficulty, or ranking data, so a gap it surfaces could be a topic almost nobody searches for. Paid platforms like Ahrefs' Content Gap or Semrush's Keyword Gap add that demand layer by comparing what keywords domains actually rank for. The right workflow is to use this tool as a fast, private first pass that turns two URL lists into a prioritized shortlist, then validate the biggest gaps against real keyword data before committing to writing. Export your shortlist with the Download CSV button and check it against search volume next.