DevInspector

A Developer Toolbox for Mac

15+ essential developer utilities in one beautiful, native app — formatting, encoding, hashing, and more. 100% local, no data ever leaves your Mac.

Free Free forever • No account • No tracking

Download Free for Mac

macOS 13+ • Apple Silicon & Intel • ~2.5 MB

15+ Tools, One App

JSON Formatter

Prettify, minify, and validate JSON with a tree view.

Base64

Encode and decode Base64 strings instantly.

URL Encoder

Encode/decode URLs with component breakdown.

JWT Decoder

Inspect header & payload, check token expiry.

Hash Generator

MD5, SHA-1, SHA-256, SHA-512 via CryptoKit.

UUID Generator

Generate UUIDs in bulk with history.

Timestamp

Convert between Unix time and readable dates.

Regex Tester

Live matching with capture groups.

Color Picker

HEX/RGB/HSL with SwiftUI/CSS code output.

Text Diff

Side-by-side and unified diff views.

Number Base

Convert between binary, octal, decimal, hex.

Password Generator

Strong, customizable passwords locally.

Lorem Ipsum

Generate placeholder text on demand.

Markdown Preview

Render Markdown to formatted output.

Image Converter

Convert & transform images locally.

Text Transformer

Case conversion and text utilities.

System Requirements

macOS 13 Ventura+ Apple Silicon or Intel ~2.5 MB

Installing

Open DevInspector.dmg and drag DevInspector into your Applications folder.
Because DevInspector is a free app distributed outside the App Store, macOS may say it "is damaged" on first launch. This is just Gatekeeper — to allow it, open Terminal and run:
xattr -dr com.apple.quarantine /Applications/DevInspector.app
Then open DevInspector normally.

Feedback & Support

Found a bug, want a new tool, or just want to say hi? We'd love to hear from you.

Email info@visionion.dev

Your developer toolbox, on-device.

Fast, native, and completely private. Free forever.