TOOL
BOX4DEVS
Featured
POPULAR TOOLS
JSON Formatter & Validator
Format, validate and minify JSON instantly — paste your JSON to beautify it, spot syntax errors, or compress it. Free, runs entirely in your browser.
/json-formatterJSON → Model
Convert JSON to C# classes or TypeScript interfaces with proper types.
/json-modelCase Converter
Convert text between uppercase, lowercase, camelCase, snake_case, kebab-case and more.
/case-converterSlug Generator
Convert titles and labels into clean kebab-case or snake_case slugs entirely in your browser.
/slug-generatorWord Counter
Count words, characters, sentences, paragraphs and reading time instantly.
/word-counterAdded two more fully client-side tools for generating clean slugs and placeholder copy directly in the browser.
Launched a live Markdown previewer that renders headings, lists, tables, blockquotes, and generated HTML fully client-side.
Added two new fully client-side utilities for converting text casing and translating Unix timestamps into readable dates.
Prove it
DON'T
TRUST US
We say we don't track you. Here's how to verify that claim yourself in under 60 seconds.
All requests you see will be to toolbox4devs.com — your own files. No analytics endpoints. No third-party scripts. No beacon calls.
Still skeptical? Open DevTools on any tool page and inspect the source yourself. No minified third-party bundles. No hidden scripts.
Why
BUILT FOR
DEVS
Privacy first
Every tool runs entirely in your browser. Your data never leaves your machine — paste your secrets safely.
No friction
No login. No sign-up. No paywall. Open the tool, use it, close it. That's the whole flow.
Always growing
18 tools today. New ones added regularly based on what developers actually need.
Community
MISSING
A TOOL?
Got a tool you reach for daily that's not here yet? Send a message — this toolbox is built around what developers actually use.
Send a suggestion →