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Tools 1 to 48 of 1078, in category order. Every tool is on one of these pages. All run in your browser, no sign-up.

Launch Toolkit

README GeneratorFill in a short form and get a clean, structured README.md with badges, install, usage and license sections ready to copy. Private.Meta Tags GeneratorEnter your title, description and image to produce SEO, Open Graph and Twitter Card meta tags ready to paste into your page head. Private.Break-Even CalculatorEnter fixed costs, price per unit and variable cost per unit to find the break-even units and the revenue needed to cover costs.Business and Brand Name GeneratorEnter a keyword and instantly get brandable company and product name ideas using prefixes, suffixes and blends. Copy any idea.Slogan and Tagline GeneratorEnter your brand or product and instantly get catchy tagline ideas to inspire your marketing, with one-click copy for any line.Emoji Favicon GeneratorTurn any emoji into favicon PNGs at 16, 32, 64 and 180 pixels and download them, with the HTML tag to use them.Google SERP Snippet PreviewType your title, URL and meta description to see a live desktop and mobile search result with pixel-width truncation.UTM Campaign Link BuilderAdd source, medium, campaign, term and content parameters to any URL and copy a clean, trackable campaign link for analytics.Open Graph Tag GeneratorEnter title, description, image and type to build valid og meta tags for rich link previews on Facebook, LinkedIn and Slack.Dofollow Backlink CheckerPaste the page that links to you and your domain to see every link to your site and whether it is dofollow, nofollow, ugc or sponsored.Social Media Link Preview CheckerSee how your URL looks when shared on X (Twitter), LinkedIn, Facebook and Slack, and what is missing from your Open Graph and Twitter Card tags.Website Launch Readiness CheckerOne click checks HTTPS, title, meta description, social preview, favicon, mobile viewport, H1, indexing and speed, with a score and a fix for each problem.Domain Name Availability CheckerType a name and see at once whether it is registered on .com, .io, .ai, .app, .dev, .co and more, straight from the official registries.AI Search Visibility CheckerSee whether ChatGPT, Perplexity, Claude, Gemini and Bing crawlers are allowed to read your site, and what stops AI assistants from citing it.Product Hunt Tagline CheckerCount characters against the 60-character limit, catch common mistakes and preview how your name and tagline read in the launch feed.Product Hunt Maker Comment GeneratorFill in a few fields and get a ready-to-edit maker comment for launch day in three styles: the story, the short intro and the feature tour.Product Hunt Launch Time ConverterProduct Hunt days start at 12:01 AM Pacific Time; see exactly when that is in your time zone for the next seven days, with a countdown.Privacy Policy GeneratorAnswer a few questions and get a plain-English privacy policy you can edit, copy and publish.Terms of Service GeneratorAnswer a few questions and get plain-English terms and conditions you can edit and publish.Product Launch ChecklistTwenty-nine steps before, during and after launch day, with your progress saved in your browser.OG Image GeneratorPaste your website URL or type a title and get share images in 16 platform sizes, from link previews (1200 x 630) to YouTube thumbnails, Instagram stories and LinkedIn banners, with a live preview and the meta tags to paste.SaaS Valuation CalculatorEstimate what a SaaS business is worth from its MRR or ARR and a revenue multiple, see a low to high range, and check the multiple behind any offer.NPS CalculatorEnter how many promoters, passives and detractors you have, or paste raw 0 to 10 scores, and get your Net Promoter Score with the breakdown.TAM SAM SOM CalculatorEstimate your total, serviceable and obtainable market bottom-up from the number of potential customers and your annual price.LTV to CAC Ratio CalculatorCompare lifetime value against acquisition cost to judge if your unit economics are healthy, all in your browser.Churn Rate CalculatorEnter customers lost and starting customers to get churn rate and retention rate percent instantly in your browser.MRR and ARR CalculatorTurn subscribers and average price into monthly and annual recurring revenue instantly, all in your browser.Burn Rate and Runway CalculatorEnter cash, monthly spend and income to find net burn and how many months of runway remain.

AI

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AI Text SummarizerPaste an article, email or document and get a concise summary in seconds. No signup. Your text is processed by AI on the server.AI ParaphraserReword and rewrite text to say the same thing differently while keeping the meaning. No signup. Text is processed by AI on the server.AI Grammar CheckerPaste text and get a corrected version with grammar, spelling and punctuation cleaned up. No signup. Processed by AI on the server.AI TranslatorTranslate text into Spanish, French, German, Chinese, Japanese and more. No signup. Your text is processed by AI on the server.AI Headline GeneratorEnter a topic and get several catchy headline and title options for articles, blogs and posts. No signup. Processed by AI on the server.AI Explain SimplyPaste jargon or a hard concept and get a simple, clear explanation. No signup. Processed by AI on the server.

Text

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JSON Formatter & ValidatorBeautify, minify and validate JSON instantly in your browser. No data leaves your device.Word & Character CounterCount words, characters, sentences, paragraphs and reading time as you type. 100% private.Case ConverterConvert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case and more instantly.Word Frequency CounterPaste text and see which words appear most often, ranked by count, with optional stop-word filtering. Fully private.Remove Duplicate LinesDelete repeated lines, keep unique lines only, with optional case-insensitive and trim matching. Private.Sort LinesSort text lines alphabetically or numerically, ascending or descending, with reverse and shuffle options. Runs privately in browser.Reverse TextFlip text backwards by characters, words or lines instantly. Create mirror-style strings and reversed messages, fully private.Find and ReplaceReplace all occurrences of a word or pattern in text, with case-insensitive and regex options. Bulk edit text privately.Whitespace and Trim RemoverTrim leading and trailing spaces, collapse extra spaces, and strip blank lines from text in one click. Clean text privately.Remove Line BreaksJoin broken lines into one paragraph or replace newlines with spaces or commas instantly. Runs in your browser.Add Line NumbersNumber every line with custom start, separator and zero padding. Great for code, lists and logs. Fully private.Text RepeaterRepeat any word, sentence or block of text as many times as you want, with a custom separator between copies. Runs privately.Lorem Ipsum GeneratorCreate placeholder text by paragraphs, sentences or words for mockups and layouts, with a classic or random start. Private.Slug GeneratorTurn any title into a clean, lowercase, hyphenated slug for SEO-friendly URLs. Handles accents and symbols. Runs privately.