🔧 CrimeLabs.dev

Free, open-source developer tools and utilities. No sign-up required, no tracking, just tools.

Available Tools

Available

QR Code Generator

Generate QR codes for URLs, WiFi, contacts, emails, and more with logo embedding

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Available

Password Generator

Create secure passwords with customizable length, character sets, and strength indicators

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Available

Base64 Encoder/Decoder

Encode and decode text or files to/from Base64 format

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Available

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes for text or files

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Available

Text & File Comparison

Compare two text inputs or files and see the differences side-by-side

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Available

JSON Formatter

Format, validate, and minify JSON with syntax highlighting

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Available

UUID Generator

Generate v1, v4, v5 UUIDs with bulk generation support

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Available

Color Converter

Convert between HEX, RGB, HSL, CMYK with accessibility checker

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Available

URL Encoder/Decoder

Encode and decode URLs, parse query strings

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Available

Code Screenshot Generator

Create beautiful code screenshots with syntax highlighting and themes

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Available

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words

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Available

Regex Tester

Test regular expressions with live matching and capture groups

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Available

JWT Decoder

Decode and verify JSON Web Tokens with signature validation

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Available

Timestamp Converter

Convert between Unix timestamps and human-readable dates

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Available

Markdown Preview

Live markdown editor with GitHub-flavored syntax support

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Available

Cron Expression

Generate and validate cron expressions with visual builder

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Available

Case Converter

Convert between camelCase, snake_case, kebab-case, and more

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Available

Image Utilities

Remove backgrounds, resize, compress, convert formats with WebGPU acceleration

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Available

PDF Tools

Merge, split, compress, rotate, convert PDFs and images - all client-side

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Coming Soon

More developer tools in the pipeline. Vote or suggest features on GitHub!

Soon

CSV to JSON

Convert CSV to JSON and vice versa with custom delimiters

Soon

SQL Formatter

Format and beautify SQL queries with syntax highlighting

Soon

HTML Entity Encoder

Encode and decode HTML entities and special characters

Soon

Checksum Calculator

Calculate CRC32, Adler32, and verify file integrity