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Powerful browser-based tools. No signup, no installation, completely free.
Count words, characters, sentences, and estimate reading time instantly.
Use tool DeveloperFormat, validate, and beautify your JSON data.
Use tool UtilityGenerate strong passwords with custom options.
Use tool AIEstimate token counts and API costs for GPT-4, Claude, and Gemini.
Use tool AIBuild structured, effective prompts using role, task, context, and format framework.
Use tool AICompare API costs across OpenAI, Anthropic, and Google models.
Use tool SEOGenerate SEO meta tags with Google preview, Open Graph, and Twitter cards.
Use tool WritingAnalyze text readability with Flesch, Gunning Fog, and Coleman-Liau scores.
Use tool DeveloperConvert Markdown to clean HTML with live preview and copy.
Use tool DeveloperTest regex patterns with match highlighting, group capture, and replacement.
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