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