If you’ve ever needed to check a word count, test a robots.txt rule, or decode a Base64 string in the middle of a workday, you know how annoying it is to hunt down a decent tool for a two-minute task. That’s what this page is for. It’s a collection of free, browser-based tools built for the everyday work of writing, SEO, and light development: no installs, no accounts, and no data leaving your browser.
Below is the full list, grouped by what each tool actually does and who tends to reach for it.
Content & Writing Tools
Word Counter Counts words, characters, paragraphs, and estimated reading time in any text, and breaks down keyword density along the way. Handy if you’re a blogger checking a draft against an SEO target, a student watching an essay limit, or a copywriter matching a client’s word count.
Character Counter gives you a live character and word count for text with strict limits: meta titles, meta descriptions, social posts, SMS. Going even one character over means your text gets cut off; this is the tool to check first.
Keyword Density Checker Shows how often specific words and phrases show up in a piece of content, so you can spot over-optimisation or thin coverage before you hit publish.
Crawling & Indexing Tools
Robots.txt Generator Builds a valid robots.txt file from simple form fields, so you don’t have to memorise the syntax. Set rules for specific bots, block sensitive folders, and drop in your sitemap URL.
Robots.txt Tester checks whether a given URL is allowed or blocked for a specific crawler, and points to exactly which line in your robots.txt file is responsible. Usually the next step after you’ve built or edited a robots.txt file.
Redirect Checker traces a URL’s full redirect chain, hop by hop, with the status code at each step useful for spotting loops, unnecessary chains, or mixed redirect types.
HTTP Header Checker Inspects the full set of HTTP response headers for any URL, including caching, security, and indexing-related headers like X-Robots-Tag.
HTTP Status Checker checks the status code of any URL instantly, so you can spot 404s, server errors, and soft 404s. Supports checking several URLs at once.
On-Page SEO Tools
Meta Tag Analyzer Pulls a page’s title, meta description, canonical tag, Open Graph tags, Twitter Card tags, and schema markup into one view, so you don’t have to dig through the source code manually.
Canonical Checker checks a page’s canonical tag and flags common issues missing canonicals, canonicals pointing to a redirected page, or conflicting signals.
Open Graph Checker Previews and validates a page’s Open Graph tags, showing how a link will look when it’s shared on Facebook or LinkedIn.
Twitter Card Validator Previews and validates a page’s Twitter Card tags, showing how a link will appear when shared on X.
Developer Tools
Base64 Encoder / Decoder Converts plain text to Base64, or decodes a Base64 string back into readable text. Comes up often with API authentication headers, email attachments, and data embedded in JSON or HTML.
URL Encoder / Decoder: Per cent-encodes text so it’s safe to use inside a URL, or decodes an already-encoded URL back into its readable form. Useful for building query strings, debugging API requests, or just figuring out what a tracking link actually says.
Slug Generator: Turns any title into a clean, SEO-friendly URL slug, lowercased, hyphenated, and stripped of special characters automatically. A quick way for bloggers and developers to keep URLs consistent without editing them by hand.
Sitemap Tools
XML Sitemap Generator Crawls a site and puts together a valid XML sitemap file that’s ready to upload.
XML Sitemap Validator Validates an existing sitemap’s XML structure and checks every listed URL for broken links, redirects, or robots.txt conflicts.
International SEO Tools
Hreflang Checker Validates hreflang tags across the different language and region versions of a page, catching missing return tags, invalid language codes, and conflicting entries.
Why Use These Tools?
- No sign-up, ever. Every tool here works without an account or an email address.
- Nothing is uploaded or stored. Processing happens locally in your browser, so your text and URLs stay private.
- No usage limits. Use any tool as often as you need, at no cost.
- Fast and focused. Each tool is built to do one job well, without burying it under clutter or ads.
FAQ
Are these tools really free, with no hidden limits? Yes. Every tool on this page is free to use, with no sign-up, no daily cap, and no premium tier hiding behind it.
Do I need an account to use any of these tools? No. None of the tools in this collection requires an account.
Is my data safe when I use these tools? Yes. Everything runs directly in your browser; nothing gets uploaded to a server or stored anywhere, so your text and URLs stay private.
Which tool should I use to check my robots.txt file? Use the Robots.txt Generator to build a new file, then the Robots.txt Tester to check whether a specific URL is allowed or blocked once it’s live.
What’s the difference between the Base64 tool and the URL Encoder? They solve different problems. Base64 is a general-purpose way to represent text or binary data using a fixed set of characters, while URL encoding specifically makes text safe to use inside a URL. They’re not interchangeable.