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Explore in-depth tutorials, developer workflows, browser-based productivity tips, regex examples, JSON formatting guides, SEO utilities, and privacy-first online tools designed for modern developers and creators.
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Learn what each UTM parameter does, how Google Analytics 4 reads your values, and a simple lowercase naming convention with ready-to-copy examples for email, social, paid ads, QR codes and partner links. Avoid the common mistakes that split sources and send traffic to Unassigned.
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Create static QR codes in your browser: choose size and error correction, keep strong contrast, test before printing, and encode URLs, text or Wi-Fi details.
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A practical guide to JavaScript regex: flags, character classes, groups and lookarounds, with examples you can test in your browser.
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Generate fake names, emails, addresses and more for testing, choose US or UK formats, copy JSON, CSV or text, and add the edge cases fake data misses.
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Compare two texts in your browser, read added and removed characters, and avoid common mistakes with spaces, line breaks and pasted formatting.
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Pretty-print, minify and validate JSON in your browser, and learn what formatting can change: key order, very large numbers and duplicate keys.
Use our privacy-first browser tools for JSON formatting, regex testing, QR generation, image resizing, and developer productivity workflows.