+++ 100% FREE & CLIENT-SIDE +++ ZERO DATA LEAVES YOUR BROWSER +++ NO LOGINS REQUIRED +++ AVAILABLE FOR FULLSTACK FREELANCE +++ SUPPORT US ON BUY ME A COFFEE +++ V4.0 ONLINE
+++ 100% FREE & CLIENT-SIDE +++ ZERO DATA LEAVES YOUR BROWSER +++ NO LOGINS REQUIRED +++ AVAILABLE FOR FULLSTACK FREELANCE +++ SUPPORT US ON BUY ME A COFFEE +++ V4.0 ONLINE
V4.0 // 40+ TOOLS ONLINE • 100% IN-BROWSER

UNIVERSAL WEB
TOOLBOX

High-performance utilities for Developers, Designers & Hackers.
Zero server uploads. 100% Privacy Guaranteed.

⭐ RETROBOX PRO SUITE

VIP POWER TOOLS
9 PRO TOOLS

1. IMAGES & MEDIA

5 TOOLS

2. DESIGN & ART

8 TOOLS

3. DEV & DATA

18 TOOLS
🕸️
⭐ PRO

GraphQL Builder

Design GraphQL schemas, types & mutations visually with SDL export.

OPEN PRO ->
🛡️
⭐ PRO

.ENV Security Scanner

Audit .env files for leaked AWS, Stripe & OpenAI secrets locally.

OPEN PRO ->
⭐ PRO

API Mock Generator

Generate realistic JSON fixtures & dummy REST datasets in-browser.

OPEN PRO ->
🐳
⭐ PRO

Docker Compose Builder

Build production multi-container docker-compose.yml stacks visually.

OPEN PRO ->
📐
⭐ PRO

SQL to TypeScript / Zod

Convert SQL CREATE TABLE into TypeScript types, Zod schemas & Prisma.

OPEN PRO ->
🛡️
NEW

JWT Debugger

Decode & inspect JSON Web Tokens safely (100% Client-Side).

OPEN ->
NEW

cURL Converter

Convert cURL commands to JS fetch() and Python requests.

OPEN ->
🔗
NEW

URL Encode/Decode

Encode/decode URI components and parse query string params.

OPEN ->
NEW

Cron Generator

Visual cron schedule generator & execution explainer.

OPEN ->
{}
NEW

JSON Formatter

Validate, prettify, and minify JSON data structures.

OPEN ->
.*
NEW

Regex Tester

Real-time regex evaluation with match highlighting.

OPEN ->
🏷️
NEW

Meta & OpenGraph

Generate SEO & social card meta tags with preview.

OPEN ->
📊
TOP

JSON <> CSV

Two-way local data converter between CSV and JSON.

OPEN ->
DB

SQL Beautify

Format and clean up complex SQL queries.

OPEN ->
📏

PX ↔ REM

CSS PX to REM conversion calculator.

OPEN ->
⏱️

Timestamp

Unix Timestamp & Date converter.

OPEN ->
64

Base64 Tool

Encode and decode text or files to Base64 format.

OPEN ->
⌨️

Keycode Info

Real-time JavaScript keyboard event inspector.

OPEN ->
⚖️
DEV

Diff Checker

Compare two texts and highlight differences.

OPEN ->
🖧
NET

CIDR Calculator

IP subnet, mask & host range calculator.

CALCULATE ->

4. TEXT & WRITING

5 TOOLS

5. SECURITY & CRYPTO

6 TOOLS

6. OSINT & INVESTIGATION

3 TOOLS

7. UTILITIES

3 TOOLS

★ RECOMMENDED TECH & DEV GEAR

Curated Hardware & Books
SECURITY IN STOCK • 69.60€
Yubico YubiKey 5C NFC

YubiKey 5C NFC

★★★★★ 4.7/5 (7,211 reviews)

Hardware two-factor security key (USB-C & NFC) for phishing-proof authentication.

MUST-READ IN STOCK • 41.99€
The Clean Coder Book

The Clean Coder

★★★★★ 4.7/5 (2,242 reviews)

A code of conduct for professional programmers: craftsmanship, testing, and discipline.

HARDWARE IN STOCK • 200.23€
Raspberry Pi 5

Raspberry Pi 5

★★★★★ 4.7/5 (2,970 reviews)

Next-gen single-board computer for self-hosting local servers, VPNs, and automation.

VISION LAB IN STOCK • 92.46€
ELP USB Camera Module

ELP USB Vision Camera

★★★★☆ 4.0/5 (89 reviews)

High-precision varifocal 5-50mm USB sensor for computer vision, robotics, and forensics.

DESK SETUP IN STOCK • 34.99€
KOORUI Gas Spring Monitor Arm

KOORUI Monitor Arm (17-32")

★★★★☆ 4.4/5 (395 reviews)

Ergonomic gas spring mount (VESA 75/100mm), ±72° tilt, 360° rotation with cable management.

As an Amazon Associate, RetroBox earns from qualifying purchases at no extra cost to you. We only curate equipment we personally use and recommend.

📚 DEVELOPER GUIDES & TUTORIALS

TECH ARTICLES & HOW-TOS
6 GUIDES ONLINE
⚠ FULLSTACK ENGINEER AVAILABLE

NEED A DEVELOPER ?

Looking for a passionate fullstack engineer to build custom web tools, APIs, or modern applications?
Let's discuss your project today.

F.A.Q & PRIVACY FIRST

🔒 Are my files, passwords, or data uploaded to remote servers? +
Never. RetroBox runs 100% in your browser using modern Web Crypto, WebAssembly, and Canvas APIs. Your data never leaves your computer.
💸 Are these tools completely free to use? +
Yes, 100% free with no subscriptions, no paywalls, and no intrusive ads. You can support the project on Buy Me a Coffee!