SEOSTUDIO™ FREE TOOLS
Explore free tools for websites, social media, writing, data, marketing, and business. Find the right utility, complete your task in your browser, and get started without an account.
40 tools available · Expansion goal: 100 tools. The count includes published, working utilities only.Rule-based, with no external AI API. Your task description is neither stored nor transmitted.
Exact tool names and task phrases carry more weight than individual words. Functions, synonyms, practical questions, and use cases add context. A recognized data format must match a tool’s capabilities. The order is not a quality rating.
Tools you open during this browser session will appear here.
Favorites stay in this browser. Session history stores tool IDs only, never your input or file contents.
An editorial selection for getting started, not a measured usage ranking.
Count words, characters, sentences, and paragraphs. Adjust reading speed to estimate reading time and review your draft locally without uploading it.
Free · Available
Check a description against a length brief.
Related toolsValidate JSON syntax, locate errors, and inspect object and array structure without uploading your data.
Free · Available
Troubleshoot an invalid configuration.
Related toolsCalculate profit contribution, margin, markup, and a target selling price from net costs, including shipping and fees.
Free · Available
Include shipping and packing in unit economics.
Related toolsCreate bold-looking, italic, or monospace Unicode text for LinkedIn. Copy formatted posts for free, with clear accessibility and display guidance.
Free · Available
Emphasize a short post heading.
Related toolsFormat an Instagram bio with clean spacing and line breaks. Check characters against the 150-character guideline and copy your profile text for free.
Free · Available
Separate your offer and audience into short lines.
Related toolsClean and sort hashtags, remove duplicates, and compare two lists. Find shared and unique tags locally without trend data or registration.
Free · Available
Format keywords for a post.
Related toolsSearch emojis by English or German keywords, filter by topic, and copy symbols. A free local catalog for business posts, emails, and profile text.
Free · Available
Collect symbols for a short social post.
Related toolsCount words, characters, sentences, and paragraphs. Adjust reading speed to estimate reading time and review your draft locally without uploading it.
Free · Available
Check a description against a length brief.
Related toolsClean spaces, blank lines, and line breaks with explicit controls. Remove selected invisible characters only after confirmation, keeping the original draft.
Free · Available
Tidy a pasted draft.
Related toolsConvert text to uppercase, lowercase, sentence case, or first-letter title case. Supports Unicode and German characters with local copy and download.
Free · Available
Correct an all-caps line.
Related toolsRemove duplicate lines and keep first or last occurrences. Control case, edge spaces, and optional URL normalization, then copy or download the cleaned list.
Free · Available
Clean a list of topics.
Related toolsSort lines alphabetically, naturally, numerically, or by length. Choose US-English or German ordering, reverse the result, and optionally remove duplicates.
Free · Available
Order topic ideas alphabetically.
Related toolsCompare two drafts by word or line. Review additions and deletions with color and text labels, then copy or download the differences without uploading drafts.
Free · Available
Compare an original and revised draft.
Related toolsWrite SEO titles and meta descriptions, check their length, and preview a simulated search result. Copy or download HTML tags for free in your browser.
Free · Available
Draft a title for a service page.
Related toolsGenerate JSON-LD for organizations, local businesses, products, articles, and more. Validate required inputs and JSON, then copy or download your markup.
Free · Available
Describe an organization using verified facts.
Related toolsCreate robots.txt rules for multiple user-agent groups, with Allow, Disallow, and sitemap directives. Review broad restrictions and download the file for free.
Free · Available
Restrict crawling of a staging path.
Related toolsBuild a sitemap from manually entered URLs, remove duplicates, and validate optional lastmod dates. Download well-formed XML without crawling a website.
Free · Available
List selected pages of a small site.
Related toolsCreate hreflang for existing translations. Validate language-region codes, add x-default, and export complete alternate sets as HTML or XML sitemaps.
Free · Available
Connect German and US English pages.
Related toolsGenerate a canonical tag for an absolute URL. Review query parameters and manually supplied conflicting targets, then copy or download the HTML for free.
Free · Available
Create an absolute canonical for a template.
Related toolsCreate Open Graph and X card metadata for shared links. Preview title, image URL, and description in a simulation, then export the HTML for free.
Free · Available
Draft share metadata for an article.
Related toolsTurn headings into readable URL slugs with lowercase text, German umlaut transliteration, and clean hyphens. Generate and copy results locally for free.
Free · Available
Prepare a path for a new guide.
Related toolsAnalyze word and phrase frequency in pasted text, search a target keyword, filter stop words, and export CSV. No invented ideal density or ranking data.
Free · Available
Find repeated terms in a draft.
Related toolsPreview a title, URL, and meta description in simulated desktop and mobile search results. Review character counts and estimated width without a Google API.
Free · Available
Review a long title for possible truncation.
Related toolsFormat or minify JSON and explore an expandable tree. Free local processing in your browser.
Free · Available
Inspect a pasted API response.
Related toolsValidate JSON syntax, locate errors, and inspect object and array structure without uploading your data.
Free · Available
Troubleshoot an invalid configuration.
Related toolsConvert comma-, semicolon-, or tab-separated CSV to a JSON array with local file input and a table preview.
Free · Available
Prepare non-sensitive sample data for an application.
Related toolsExport JSON arrays for spreadsheets: detect columns, optionally flatten objects, and download CSV locally.
Free · Available
Review structured product data in a spreadsheet.
Related toolsValidate, indent, or minify XML locally while respecting namespaces, CDATA, and mixed content.
Free · Available
Make a sitemap readable before review.
Related toolsEncode UTF-8 text or local files as Base64, decode text, and download results. Free browser-based processing without uploads or registration.
Free · Available
Encode a UTF-8 text sample.
Related toolsEncode or decode URL components and full URIs, with clear errors for malformed percent encoding.
Free · Available
Prepare a search phrase as a query parameter.
Related toolsEncode HTML special characters or decode entities, with local plain-text output and download.
Free · Available
Prepare an HTML example for documentation.
Related toolsPreview and clean Markdown headings, lists, and tables locally. Download Markdown or export HTML with raw input HTML displayed as text.
Free · Available
Review a README before committing.
Related toolsMerge PDFs, select and reorder pages, or split documents locally without transferring files to a server.
Free · Available
Combine two unprotected documents.
Related toolsCalculate net prices, tax-inclusive totals, and VAT across multiple items. Custom rates, German rate presets, and CSV export.
Free · Available
Compare quotes containing different VAT rates.
Related toolsCalculate profit contribution, margin, markup, and a target selling price from net costs, including shipping and fees.
Free · Available
Include shipping and packing in unit economics.
Related toolsModel FBA contribution and break-even pricing using your own purchasing, storage, returns, advertising, and fulfillment costs.
Free · Available
Model a new inventory purchase.
Related toolsEstimate eBay net contribution, margin, and target price with configurable selling fees, shipping, and advertising costs.
Free · Available
Separate charged shipping revenue from shipping cost.
Related toolsCalculate ROAS as a multiple and percentage. Compare target revenue, break-even ROAS, and contribution after advertising.
Free · Available
Align campaign targets with product margin.
Related toolsCalculate average cost per click and model clicks, conversions, and conversion cost using your budget and target CPC.
Free · Available
Translate an ad budget into potential clicks.
Related toolsCalculate cost per thousand impressions and compare the budget needed for planned campaign delivery.
Free · Available
Compare proposals with different impression volumes.
Related toolsModel affiliate commission from traffic, click-through rates, and conversions. Compare percentage, fixed, and recurring payments.
Free · Available
Compare one-time and recurring commissions.
Related toolsCalculate contribution, break-even units, required revenue, and profit at a planned sales volume, with scenarios and CSV export.
Free · Available
Compare monthly fixed cost with a sales plan.
Related toolsModel starting savings, monthly contributions, and compound growth with nominal or effective rates, annual balances, and CSV export.
Free · Available
Separate contributed savings from modeled interest.
Related toolsOrdered by existing release groups, not by live usage statistics.
Model starting savings, monthly contributions, and compound growth with nominal or effective rates, annual balances, and CSV export.
Free · Available
Separate contributed savings from modeled interest.
Related toolsCalculate contribution, break-even units, required revenue, and profit at a planned sales volume, with scenarios and CSV export.
Free · Available
Compare monthly fixed cost with a sales plan.
Related toolsModel affiliate commission from traffic, click-through rates, and conversions. Compare percentage, fixed, and recurring payments.
Free · Available
Compare one-time and recurring commissions.
Related toolsYou may know the task you need to finish without knowing what the relevant tool is called. This free finder connects concrete problems to working utilities so you can get started directly.
Describe the task in the Smart Tool Finder. It searches published utilities by functions, keywords, practical questions, and use cases, then offers relevant starting points.
Find the right tool →Browse SEO & Webmaster or search for a specific task, such as generating a canonical tag. Open an available tool and start with your own input.
Category →The social category covers text formatting, bios, hashtag cleanup, and emoji selection. Word-count and text-cleaning utilities provide related support.
Category →Yes, for the supported formats. Choose a local browser utility and check its format and size limits. The file tools do not upload your documents for conversion.
Category →The business category covers margins, advertising costs, marketplace fees, and related calculations. Enter your own assumptions; the outputs do not replace provider fee schedules or professional advice.
Category →Follow the related-tool recommendations. For example, inspect JSON in the formatter, check syntax in the validator, and use the schema generator when preparing structured data.
Find the right tool →Yes. Utilities labeled free can be used without payment. Separate software providers listed in the main portal may have their own pricing.
No. The free core functions do not require an account.
No. It uses documented rules, normalized terms, synonyms, and task matching. It does not send your description to an external AI service.
The interfaces support phones, tablets, and desktops. Large files and complex PDFs may exceed a mobile device’s available memory or processing capacity.
Only favorite tool IDs are retained locally. Recently opened tool IDs are kept for the browser session. Search text, tool input, and file contents are not saved by the hub.
For work beyond these focused local utilities, explore our sourced software profiles. Review each provider’s current features, limitations, and plans.
ChatGPT →Semrush →Ahrefs →