Free Tools for SEO, Content, and Development
PostDune’s free tool collection covers the everyday tasks that writers, marketers, SEO professionals, and developers run into constantly counting words, generating clean URLs, checking crawl rules, and encoding data without needing to install software or create an account. Every tool runs directly in your browser, so your data is never uploaded or stored, and there’s no limit on how often you can use them.
Below is the full list of tools, along with what each one is for and who it’s built for.
Content & Writing Tools
Word Counter
Count words, characters, paragraphs, and estimated reading time in any text, plus a keyword density breakdown. Built for bloggers checking content length against SEO targets, students meeting essay requirements, and copywriters matching client word counts.
Character Counter
Get a live character and word count for text with strict limits meta titles, meta descriptions, social media posts, and SMS messages. Useful anywhere going over a hard character limit means your text gets cut off.
SEO Tools
Slug Generator
Turn any title into a clean, SEO-friendly URL slug automatically lowercased, hyphenated, and stripped of special characters. Useful for bloggers and developers who want consistent, keyword-friendly URLs without manual editing.
Robots.txt Generator
Build a valid robots.txt file by filling in simple form fields no need to memorize the correct syntax. Set crawling rules for specific bots, block sensitive folders, and add your sitemap URL.
Robots.txt Tester
Check whether a specific URL is allowed or blocked for a given crawler, and see exactly which rule in your robots.txt file is responsible. The natural next step after generating or editing a robots.txt file.
Developer Tools
Base64 Encoder / Decoder
Convert plain text to Base64 or decode Base64 strings back to readable text commonly needed for API authentication headers, email attachments, and embedding data in JSON or HTML.
URL Encoder / Decoder
Percent-encode text for safe use in URLs, or decode an already-encoded URL to see its readable form. Useful for building query strings, debugging API requests, and understanding tracking links.
Why Use These Tools?
- No sign-up, ever every tool is fully usable without creating an account or providing an email address
- Nothing is uploaded or stored all processing happens locally in your browser, so your text and data stay private
- No usage limits use any tool as many times as you need, for free
- Fast, focused, and ad-light built to do one job well rather than bury the tool under clutter
FAQ Section
Are these tools really free, with no hidden limits?
Yes, every tool on this page is completely free to use, with no sign-up, no daily cap, and no premium tier.
Do I need to create an account to use any of these tools?
No account is required for any tool in this collection.
Is my data safe when I use these tools?
Yes. All of these tools process your input directly in your browser nothing is uploaded to a server or stored, 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, and 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?
Base64 encoding is a general-purpose way to represent text or binary data using a fixed character set, while URL encoding specifically makes text safe to include inside a URL. They solve different problems and aren’t interchangeable.