Welcome to onlinetoolhub.dev
Reliable and fast tools for developers, students and creators, all in your browser.
IP Lookup
Quickly discover the geolocation, ISP, and other details associated with any IP address.
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DNS Lookup
Perform DNS queries for A, AAAA, MX, NS, TXT and other records quickly, free and easily.
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Base64 Encoder/Decoder
Quickly and freely encode or decode Base64 strings, streamlining various development tasks.
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URL Encoder/Decoder
Percent-encode or decode URLs and query strings instantly, with component and full-URL modes.
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Unix Timestamp Converter
Convert epoch timestamps to readable dates and back, with a live clock and ISO 8601 output.
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Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text instantly in your browser.
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JSON Formatter
Instantly format, validate, and beautify your JSON data with our easy-to-use online tool.
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JWT Decoder
Decode JSON Web Tokens, inspect claims and verify signatures directly in your browser.
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HTTP QUERY Tester & RFC Checker
Send requests with the new HTTP QUERY method (RFC 10008) to any endpoint and get an automated RFC compliance report.
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Crontab Generator
Easily create and understand cron expressions for scheduling tasks in Unix-based systems.
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SAML Decoder
Decode Base64-encoded SAML requests and assertions into readable XML for debugging and analysis.
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Password Generator
Generate strong, random passwords with custom length, numbers, and symbols.
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Word Counter
Effortlessly count words, characters, sentences, and analyze the readability of your text.
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AI Prompt Analyzer
Analyze clarity, specificity, constraints, safety, and output format of prompts, browser-only and with no API keys.
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