All Tools

Ten free tools for developers and AI engineers. Every one runs entirely in your browser — no uploads, no accounts, no usage limits.

AI Token Counter & Cost Estimator

Count tokens and estimate API cost before you ship a prompt.

AI

JSON Formatter & Validator

Pretty-print, minify and validate JSON with exact error positions.

Data

JSON ⇄ YAML Converter

Convert between JSON and YAML in both directions.

Data

Base64 Encoder & Decoder

Encode and decode Base64 and URL-encoded text, UTF-8 safe.

Encoding

Text Diff Checker

Compare two texts line by line and see exactly what changed.

Text

Cron Expression Generator & Explainer

Describe any cron expression in plain English and preview the next runs.

DevOps

Regex Tester

Test regular expressions live with match highlighting and capture groups.

Text

JWT Decoder

Decode a JWT and inspect its header, claims and expiry.

Security

SQL Formatter & Beautifier

Turn unreadable one-line SQL into clean, indented, reviewable code.

Data

UUID & Hash Generator

Generate v4 UUIDs, hash text with MD5/SHA-1/SHA-256/SHA-512, and make passwords.

Security

Bookmark it. Use it daily.

Ten tools, no accounts, no upload step, no usage caps. Add DevForge to your bookmarks bar and stop hunting for a tool every time you need one.

Browse all tools