ToolHub

What it does

ToolHub is a collection of fast, lightweight, and 100% privacy-first utility tools for developers. Convert JSON to CSV, format SQL, encode/decode Base64, convert timestamps, and test regex—all executed directly in your browser with zero data uploaded to any server.

Free online developer and file utility tools: JSON formatter & validator, Base64 encoder, SQL formatter, JWT debugger, UUID generator, Cron expression builder. Fast, secure, 100% client-side execution.

Format JSON, encode Base64, generate UUIDs, format SQL queries, and parse timestamps instantly. Fast, secure, zero registration required. Format, beautify, and inspect JSON with syntax highlighting and tree view. Validate JSON syntax, detect line-by-line syntax errors, and fix JSON bugs. Convert JSON array structures to downloadable CSV spreadsheet files. Encode standard text strings into Base64 format or decode Base64 back to plain text. Convert PNG, JPG, WebP, and SVG images to Base64 Data URIs for inline HTML & CSS. Test JavaScript regular expressions online with live match highlights and capture groups. Convert Unix epoch timestamps (seconds & milliseconds) to human readable dates UTC…from tool.lehuoliaoyu.com

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  ToolsHub2025 · toolshub.dev · ▲8

  Free online tools for developers and content creators

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  Toolkit Hub2025 · toolkit-hub.gotodev.ma · ▲9

  Every tool a developer needs, all in one place

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  Tool Wizard HubDec 2025 · toolwizardhub.com · ▲6

  Privacy-first, browser-native developer utilities.

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  ToolsHubJun 2026 · toolshub.codes · ▲2

  50+ free online tools. No signup, no fluff, just results.

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  ToolifyHubJun 2026 · toolifyhub.tools · ▲4

  50+ Free Online Text, PDF & Dev Tools Without Spam Ads

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  ToolsHubJun 2026 · toolshub.online · ▲1

  600+ free privacy-first browser tools — no uploads

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  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

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  Clipto MCP▲655

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  Work · Aug 2026 · clipto.com

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  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

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