Free tools

Free Online Web Tools

Free web utilities. No ads, no sign-up, everything runs in the browser.

Free

QR Code Generator

Generate QR for URLs, text and contacts. Add your logo. Download as PNG. No sign-up.

Free

Word Counter

Count words, characters, sentences and paragraphs in real time. Reading time and keyword density.

Free

Password Generator

Generate secure passwords and passphrases. Real entropy, no servers, no history.

Free

Color Converter

Convert between HEX, RGB, HSL and HSV. Shades, related colours and WCAG contrast.

Free

Complete Calculator

Scientific, programmer and financial. Binary/hex/octal, bitwise ops, mortgages and compound interest.

Free

Image Converter

Convert PNG, JPG, WebP, AVIF, BMP and ICO. Generate favicons with multiple resolutions. No sign-up.

Free

Photo Editor

Filters, adjustments, crop and rotation. B&W, Sepia, Vintage and more. No sign-up.

Free

JSON Formatter

Format, validate and minify JSON. Errors with exact line, tree view, sort keys. No sign-up.

Free

Markdown Converter

Markdown editor with preview. Convert to Word (.docx) or import a .docx to Markdown. No sign-up.

Free

PDF Tools

Convert images to PDF and remove pages from a PDF. Drag & drop, image fit, no sign-up.

Free

Base64 Encoder

Encode and decode Base64 instantly. Full Unicode support, URL-safe mode. No sign-up.

Free

URL Encoder

Encode and decode URLs with encodeURIComponent or encodeURI. Percent-encoding instantly. No sign-up.

Free

Hash Generator

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes in real time. Integrity verification. No sign-up.

Free

Timestamp Converter

Convert Unix timestamps to readable dates. Live current timestamp. ISO 8601, UTC, relative. No sign-up.

Free

Video Editor

Trim, compress, convert and edit videos. Rotate, GIF, watermark, subtitles. No sign-up.

Free

Text Case Converter

Convert text to camelCase, snake_case, kebab-case, PascalCase, UPPERCASE and more. Real time.

Free

UUID Generator

Generate unique UUID v4 with crypto.randomUUID(). Bulk generation, history, copy. No sign-up.

Free

Number Base Converter

Convert between binary, octal, decimal and hex in real time. All fields update simultaneously.

Free

JWT Decoder

Decode JWT instantly. Header, payload, standard claims and expiry verification. No sign-up.

Free

CSS Unit Converter

Convert px, rem, em, vw, vh, pt in real time. Configurable base font-size and viewport.

Free

Diff Checker

Compare two texts and highlight line-by-line differences. Green added, red removed. Download the diff.

Free

HTTP Status Codes

Complete reference for 60+ HTTP 1xx-5xx status codes with bilingual descriptions and real-time search.

Free

AES Text Encryptor

Encrypt text and files with AES-256-GCM and PBKDF2. 100% in browser. Data never leaves your device.

Free

Regex Tester

Test regular expressions in real time. Match highlighting, capture groups and quick pattern reference.

Free

Cron Builder

Build cron expressions visually. Natural language description and next 5 executions calculated.

Free

Metadata Analyzer

Analyze, remove and edit EXIF, GPS, IPTC and XMP metadata. Lossless for JPEG. Privacy risk indicator. No sign-up.

Windows

MACMCleaner

Windows system cleaner. Temp files, browser cache, Prefetch and Recycle Bin. 100% offline, open source.

More tools coming soon.

What are these tools?

This section brings together free web utilities developed by Miguel Ángel Colorado Marin (MACM) to simplify everyday tasks for developers, designers and anyone working in digital environments. All tools run directly in the browser, with no installation or account required.

The code for each tool is available on GitHub under the MIT licence. If you find a bug or have a suggestion, you can open an issue or contact directly through the portfolio.

🔒

Full privacy

Everything happens in your browser. No data is sent to external servers.

No sign-up

Access any tool directly without creating an account or providing an email.

📖

Open source

Public repositories on GitHub. You can inspect, modify and reuse the code.