All systems operational ·42 free tools ·0kb tracking bloat ·100% Client-Side ·Last updated Aug 2026
[ Developer Directory ]

All Online Developer Tools

Fast, privacy-focused, zero-signup developer utilities running 100% client-side in your browser. Search through our complete suite of code formatters, converters, text manipulators, image tools, and cloud infrastructure calculators.

JSON Tools

6 Tools

Web & Code Tools

12 Tools

Text Tools

9 Tools

Image Tools

2 Tools

Utilities & Cloud Tools

13 Tools

Color Converter

Convert colors between HEX, RGB, HSL, and common CSS color formats.

[ Color ][ CSS ]

Number Base Converter

Convert numbers between binary, decimal, octal, hexadecimal, and other bases.

[ Numbers ][ Convert ]

UUID Generator

Generate random UUID v4 identifiers for applications, APIs, and databases.

[ UUID ][ Generate ]

Hash Generator

Create MD5, SHA-1, SHA-256, and SHA-512 hashes from text locally.

[ Hash ][ SHA ]

Bcrypt Generator & Checker

Generate bcrypt password hashes and verify passwords against existing hashes.

[ Bcrypt ][ Security ]

JWT Decoder

Decode JWT headers and payload claims without sending tokens to a server.

[ JWT ][ Auth ]

SQL Formatter

Format and indent SQL queries for clearer debugging and review.

[ SQL ][ Format ]

Unix Timestamp Parser

Convert Unix epoch timestamps to readable dates and back again.

[ Time ][ Unix ]

Cron Expression Parser

Parse cron schedules and see their next execution times in plain language.

[ Cron ][ Schedule ]

Bandwidth & RAM Calculator

Estimate required server RAM, peak throughput, and monthly cloud bandwidth from visitor traffic.

[ Cloud ] [ RAM ]

Cloud Cost Estimator

Compare monthly compute and storage server pricing side-by-side across AWS, GCP, and Azure.

[ Pricing ] [ AWS/GCP ]

Subnet / CIDR Calculator

Calculate IPv4 ranges, subnet masks, usable host counts, and binary network breakdowns.

[ Network ] [ CIDR ]

Uptime % / SLA Calculator

Convert SLA uptime percentages (e.g. 99.99%) into allowed daily, monthly, and yearly downtime.

[ SLA ] [ Uptime ]