Small tools that do one thing well
A growing collection of free, browser-based utilities for developers and writers. Format JSON, encode Base64, generate QR codes, count words, hash a string, pick a colour — each tool loads in under a second and runs entirely on your device. No sign-up, no tracking of your input, no server round-trips.
Why another toolbox?
Every tool here exists somewhere else on the internet. The reason this site exists is consistency: the same clean layout, the same copy-to-clipboard behaviour, the same privacy guarantee across the whole set. When you reach for a Base64 encoder or a timestamp converter, you get the same experience whether you visited for the first time or the hundredth.
Everything runs in your browser using the platform's built-in APIs — the Web Crypto API for hashing, native JSON.parse for validation, the Canvas API for QR codes. There is no backend step. That means your input is never logged, stored, or transmitted, which matters when the thing you are pasting happens to be an API token, a production log line, or a customer email.
Each tool also includes a plain-language explanation of what it does and when you would use it — useful the first time you meet a new format, and useful when you are trying to remember whether you want Base64 or Base64-URL, SHA-256 or SHA-512, JSON or CSV.
Text Tools
Everyday text chores: format and validate JSON, convert between Markdown and HTML, count words for a length target, or turn a CSV export into a JSON array.
Encoding Tools
Move text safely through systems that expect a restricted character set — Base64 for binary-in-text transport, URL encoding for query parameters, HTML entities for markup.
Developer Tools
Small utilities that come up all the time while building software: random UUIDs, cryptographic hashes, a colour picker that speaks all three CSS formats, a Unix timestamp converter, and a QR code generator.
All 13 tools
New tools are added when a problem comes up that a small single-purpose page could solve faster than a full editor or a search. If there is something you keep wishing existed here, let us know on the contact page.
Frequently Asked Questions
Are the tools free to use?
Yes, every tool on TBoxes is completely free. There are no paid tiers, no usage limits, and no account required. The site is supported by advertisements.
Is my data sent to a server?
No. Every tool runs entirely in your browser using the platform's built-in APIs — Web Crypto, native JSON parsing, Canvas, and so on. Your input never leaves your device. This is a deliberate design choice so you can safely paste API keys, production log lines, or personal data without worrying about where they end up.
Do I need to create an account?
No. All tools are usable without signing in. Accounts are only needed if you want to purchase direct advertising placements.
How do you choose which tools to build?
New tools are added when a common task turns out to be slower than it should be — a one-minute operation that ought to take one second. Each tool must do one thing, fit on one screen, and produce results instantly without a click. If you have a suggestion, the contact page is the right place.
Can I use these tools offline?
Once a tool page has loaded, most tools work without an internet connection because the logic runs client-side. Some features (like AdSense placements) naturally require connectivity.
Can I request a new tool?
Absolutely. Email hello@tboxes.dev with a short description of the problem you are trying to solve. A sentence about the use case is more useful than a detailed spec — it helps us see whether your need overlaps with others we have heard from.