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20 Dev Tools. One App.

DeltaPad puts 20 essential developer utilities in your pocket. Format JSON, decode JWTs, test regex, preview Markdown, generate passwords, convert YAML, and more - all offline.

20 Tools 11 Free Works Offline Lightning Fast
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All the Tools You Need

Professional developer utilities, always at your fingertips.

JSON Formatter

Format, minify, and validate JSON with syntax highlighting and tree view.

Regex Tester

Test regular expressions with real-time match highlighting and capture groups.

JWT Decoder

Decode and inspect JWT tokens with color-coded sections and expiry countdown.

Markdown Preview

Live edit/preview/split mode with GitHub Flavored Markdown and HTML export.

Password Generator

Cryptographically secure passwords with presets, entropy display, and history.

Color Converter

Convert between HEX, RGB, HSL with SwiftUI/UIKit/CSS code output.

Diff Viewer

Compare texts with line-level and character-level difference highlighting.

YAML Converter

Bidirectional YAML ↔ JSON conversion with auto-detect and coercion warnings.

Base64 Encoder

Encode and decode Base64 with URL-safe variant and auto-detect.

UUID Generator

Generate v4 UUIDs with one tap. Bulk mode and format options.

Hash & HMAC

MD5, SHA-1, SHA-256, SHA-512 hashes and HMAC with key encoding options.

+8 More Tools

URL Encoder, Timestamp Converter, Text Case, Number Base, Lorem Ipsum, String Escape, Byte Counter, Unix Permissions.

See It in Action

v2.0

What's New

10 New Tools

Text Case Converter, Number Base Converter, Lorem Ipsum Generator, String Escape/Unescape, Byte Counter, Unix Permissions, YAML Converter, Password Generator, HMAC Generator, and Markdown Preview.

Markdown Preview

Live edit/preview/split mode with GitHub Flavored Markdown support. Copy rendered HTML or export as image.

Password Generator

Cryptographically secure passwords using SecRandomCopyBytes. Presets, entropy display, and generation history.

YAML ↔ JSON

Bidirectional conversion with auto-detect input format. Boolean coercion warnings for YAML edge cases.

Smarter Clipboard

Clipboard intelligence now detects permissions, environment variables, Markdown, and YAML — routing you to the right tool instantly.

Unlock PRO

One-time purchase. No subscription.

PRO

$4.99

One-time purchase

  • 9 PRO tools unlocked
  • JWT, Regex, Diff, Color, YAML
  • Password & HMAC generators
  • Markdown Preview with export
  • Hash Generator (4 algorithms)
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Ready to Build?

Download DeltaPad and streamline your development workflow.

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