Free tools
Free tools that show how they got the answer.
Every website has two layers. The one your customers see, and the code underneath: titles, tags, structured data, links. That second layer is what Google and AI assistants read. These 74 tools show you what is in it. No account. No email wall.
- 41 tools run in your browser. Those files never leave your device.
- Every tool shows how it got its answer.
- Each tool states what it cannot tell you.
74 tools
Site audit
Read a page the way a search engine reads it, and see what it finds.
- Website SEO CheckerChecks one page against about 40 things that decide how search engines and AI assistants read it, and shows the evidence for each.Checks a live site
- Meta Tag AnalyzerReads common metadata from returned HTML and approximates a search-result preview.Checks a live site
- Open Graph CheckerApproximates social-card previews from returned tags and measures the referenced share image.Checks a live site
- Page Speed TestTimes server requests and sampled resources; adds browser paint measurements when capacity allows.Checks a live site
- Mobile-Friendly TestChecks mobile-related HTML and, when available, a phone-sized browser sample; not every visitor’s experience.Checks a live site
- Keyword Density CheckerShows which words and phrases a page actually uses most, and where your target phrase appears.Checks a live site
- View Page SourceFetches any public page and shows the raw HTML and response headers a crawler receives.Checks a live site
Crawling and indexing
Can crawlers reach the page, and are they allowed to keep it?
- Google Index CheckerChecks common technical indexing blockers for up to 10 addresses, with an optional search lookup for the first three.Checks a live site
- Indexed Pages CheckerReads a site's sitemaps, samples the pages and reports how many can be indexed and what stops the rest.Checks a live site
- Robots.txt Generator and TesterBuilds a robots.txt file rule by rule, and tests any address against it or against your live file.Runs in your browser
- XML Sitemap GeneratorCrawls your site from the homepage and builds a sitemap.xml from the pages that can be indexed.Checks a live site
- Sitemap URL ExtractorReads a sitemap or sitemap index and lists URLs within the disclosed file and URL limits.Checks a live site
- Cached Page CheckerLooks up the latest archive copy, an early capture and a bounded history sample for a page.Checks a live site
- Redirect CheckerFollows an address hop by hop and shows every redirect, status code and delay on the way to the final page.Checks a live site
- HTTP Status Code CheckerChecks up to 25 addresses at once and reports the status code, final address and response time of each.Checks a live site
- llms.txt GeneratorSamples sitemap pages within disclosed limits and drafts an llms.txt file from returned metadata.Checks a live site
Keywords and rankings
What people type, how hard it is to rank, and where you stand today.
- Keyword Research ToolCollects live autocomplete suggestions about a topic, grouped into questions, comparisons and more.Checks a live site
- Long-Tail Keyword GeneratorExpands a topic into autocomplete suggestions of three or more words.Checks a live site
- Keyword Difficulty CheckerUses a live search sample and disclosed authority proxies to calculate a difficulty heuristic.Checks a live site
- Keyword Rank CheckerSearches each keyword live and reports where your domain appears, which page ranks and who is above you.Checks a live site
Links and authority
Inspect sampled links and disclosed authority indicators, not Google link weights.
- Backlink CheckerFinds pages that mention your domain, opens each one and reports the links that are really there today.Checks a live site
- Domain Authority CheckerScores a domain from 0 to 100 by its position in the open web link graph, and shows the positions behind the score.Checks a live site
- Website Rank CheckerShows a domain’s position in the Tranco popularity ranking and its movement over 30 days.Checks a live site
- Spam Score CheckerChecks a site against 16 observable warning signs of a spam or low-quality site and shows the evidence for each.Checks a live site
Domain and server
Registration, hosting, location and uptime, read from the source.
- Domain Age CheckerReads the registration record and tells you when a domain was registered, to the day, and when it expires.Checks a live site
- Website Hosting CheckerIdentifies the answering IP network and clues to CDN, DNS and email providers; the origin host may remain unknown.Checks a live site
- IP Location LookupShows the country, city, network owner and ASN of any IP address or domain, or of your own connection.Checks a live site
- Is It Down?Tests reachability from our server three times and reports where a failed request stopped.Checks a live site
- Website Ping TestTimes five requests to a site and breaks each one into DNS, connection, TLS and first byte.Checks a live site
- What Is My Browser?Shows the browser, version, operating system, screen, language and public IP address your device reports.Runs in your browser
Tags and markup
The exact tags and structured data to paste into your pages.
- Meta Tag GeneratorWrite a title and description, watch the search result preview as you type, and copy the finished tags.Runs in your browser
- Open Graph GeneratorBuilds the Open Graph tags that control how your link looks when shared, with a live card preview.Runs in your browser
- Twitter Card GeneratorBuilds the card tags for X, with a preview of the summary and large-image layouts.Runs in your browser
- Schema Markup GeneratorBuilds JSON-LD structured data for a business, article, product, FAQ and more, and checks the required properties.Runs in your browser
- Favicon GeneratorTurns your logo into every icon file browsers and phones ask for, plus the tags, in one ZIP.Runs in your browser
- Google Maps Embed GeneratorMakes the embed code for a map of any address or place, sized the way you need, with a live preview.Runs in your browser
- Citation GeneratorCreates APA, MLA, Chicago and Harvard citations from a web page, a DOI or an ISBN, and lets you correct every field.Checks a live site
Writing
Check, tighten and reword text before it goes live.
- Grammar CheckerFinds spelling, grammar and punctuation mistakes and offers a fix for each, without your text leaving the browser.Runs in your browser
- Readability CheckerScores how easy your text is to read and highlights the sentences and words that make it harder.Runs in your browser
- Plagiarism CheckerSearches the web for sentences from your text, opens the pages it finds and shows which sentences appear there word for word.Checks a live site
- Paraphrasing ToolRewrites your text in different words with the same meaning, in six modes from simpler to more formal.Browser + our server
- Text SummarizerPicks the sentences that carry the most of a text and returns them in order, at the length you choose.Runs in your browser
- Speech to TextTranscribes an audio file, or types what you say as you speak.Browser + our server
Text and code utilities
Small, exact jobs done in the browser.
- Case ConverterChanges text to upper, lower, title, sentence, camel, snake or kebab case as you type.Runs in your browser
- Online Text EditorA plain-text editor with live word and character counts, find and replace, sorting and a save button.Runs in your browser
- Small Text GeneratorTurns your text into small caps, superscript and subscript characters you can paste anywhere.Runs in your browser
- Invisible Character FinderFinds hidden characters in text, shows what and where they are, removes them, and offers blank characters to copy.Runs in your browser
- Text to Binary ConverterEncodes text as binary, hexadecimal, decimal or Base64, live.Runs in your browser
- Binary to Text ConverterDecodes binary, hexadecimal, decimal bytes or Base64 back into readable text.Runs in your browser
- Emoji PickerSearch 1,900 emoji by name, click to copy.Runs in your browser
- Fake Name GeneratorGenerates made-up identities for testing forms and databases: name, email, phone and address.Runs in your browser
- Age CalculatorGives exact age in years, months and days from a date of birth, and the days until the next birthday.Runs in your browser
- Hours CalculatorAdds up hours worked across shifts, with breaks, and gives the total in hours and minutes and in decimal hours.Runs in your browser
- JSON Viewer and FormatterValidates JSON, shows the exact position of an error, formats or minifies it, and opens it as a tree.Runs in your browser
- HTML ViewerWrite or paste HTML and see it rendered next to the code, as you type.Runs in your browser
Image and video
Local image conversion and OCR; translation sends extracted text to hosted processing.
- Image CompressorRe-encodes JPEG, PNG and WebP images locally at a chosen quality or towards a target file size.Runs in your browser
- Compress JPGMakes JPEG photos smaller, to a quality or an exact file size such as 100 KB or 200 KB.Runs in your browser
- Image ConverterConverts images between JPEG, PNG and WebP in your browser, with optional resizing.Runs in your browser
- SVG to PNG ConverterRenders an SVG file to PNG, JPEG or WebP at the chosen pixel size; embedded raster detail and device limits still apply.Runs in your browser
- Image to Text (OCR)Reads the text in a photo, scan or screenshot, in your browser, in over 30 languages.Runs in your browser
- Image TranslatorReads the text in an image and translates it into the language you choose.Browser + our server
- JPG to Word ConverterReads the text in an image and saves it as an editable Word document.Runs in your browser
- Image Metadata ViewerShows the hidden data inside a photo: camera, date, GPS location, editing software and AI-generation markers.Runs in your browser
- Video to GIF ConverterTurns a clip from a video into an animated GIF in your browser, with the length, size and frame rate you choose.Runs in your browser
- Video SEO CheckerReads a video file's header and writes the VideoObject markup that tells search engines what the video is.Runs in your browser
Merge, split, compress and protect PDFs on your own device.
- Merge PDFJoins PDFs into one file in the order you set, on your own device.Runs in your browser
- Split PDFPulls pages out of a PDF: by ranges, every few pages, or one file per page.Runs in your browser
- Rotate PDFTurns all or some pages of a PDF by 90, 180 or 270 degrees and saves the result.Runs in your browser
- Compress PDFMakes a PDF smaller by recompressing the images inside it, with size targets from 50 KB to 2 MB.Runs in your browser
- PDF to JPGTurns each page of a PDF into a JPG or PNG image at the resolution you choose.Runs in your browser
- PDF to TextExtracts the text from a PDF, page by page, as plain text or an editable Word document.Runs in your browser
- Protect PDFEncrypts a PDF with a password using AES-256, in your browser.Runs in your browser
- Unlock PDFRemoves the password and restrictions from a PDF when you know the password.Runs in your browser
- PDF to ZIPPacks PDFs, or any files, into a single ZIP archive in your browser.Runs in your browser
Found something. Let RankBrain fix it.
The tools show findings to review. RankBrain gives your AI guidance for code changes. Review the proposal, keep a backup and test before publishing; your AI tool’s approval settings control changes.