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A clear explanation of Base64 encoding, how it works under the hood, and practical examples of when you'd actually need it.

WebP can cut your image sizes by 30-80% with no visible quality loss. Here's everything you need to know about converting to WebP.

From URLs to Wi-Fi credentials to vCards — QR codes have dozens of uses. This guide covers everything from generation to best practices.

Length, entropy, character sets, and why your favourite 'secure' password might be weaker than you think.

Not sure when to use HEX vs HSL vs RGB? This guide breaks down every colour format and when each one is the right choice.

From email validation to URL parsing — the 20 most useful regular expressions you'll want to have saved, with live examples.

Complete guide to Armytool's audio processing tools. Visualize waveforms, trim clips, boost volume, and reverse audio—all in your browser.

Master color with free online tools. Get HEX/RGB/HSL values, generate CSS gradients, create harmonious palettes, and check WCAG contrast.

Scientific calculator, unit converter, percentage calculator, number base converter, and Roman numerals—all free and browser-based.

Work with PDFs securely in your browser. View metadata, merge multiple PDFs, and convert images to PDF—no uploads required.

Powerful text transformations for developers. Compare diffs, convert Markdown to HTML, format JSON, remove duplicates, and regex find/replace.

Master color theory, convert between HEX/RGB/HSL/CMYK, generate CSS gradients, build harmonious palettes, and check WCAG contrast ratios.

Work with PDFs securely in your browser. View metadata, merge documents, convert images to PDF—no uploads, no watermarks.

Essential dev tools: generate UUIDs/GUIDs, create secure passwords, build QR codes, encode Base64, and convert number bases.

Transform text with case converters, word counters, diff checkers, JSON formatters, Markdown converters, and regex testers.

Master every image tool: convert formats, resize for any platform, crop precisely, compress without quality loss, and create WebP images.

Free online image converter. Convert between JPG, PNG, WebP, and GIF formats instantly in your browser—no quality loss.

Learn to resize images for web, social media, and print. Maintain aspect ratio, fit modes, and batch processing tips.

Free online image cropper. Remove unwanted edges, focus on subjects, and create perfectly framed images instantly.

Optimize images for faster websites. Learn compression techniques that reduce file sizes by up to 80% while maintaining visual quality.

Essential tool for writers, students, and content creators. Track word count, characters, sentences, paragraphs, and estimated reading time.

Transform text case instantly. Convert between uppercase, lowercase, title case, camelCase, snake_case, and kebab-case formats.

Master Base64 encoding for data URIs, email attachments, and API payloads. Encode text and files, decode Base64 back to original format.

Create custom QR codes for any purpose. Generate codes for URLs, vCards, Wi-Fi credentials, plain text, and download as PNG.

Create unbreakable passwords instantly. Customize length, character types, and generate multiple secure passwords for all your accounts.

Generate version 4 UUIDs and GUIDs instantly. Bulk generate unique identifiers for databases, testing, and development projects.

Learn professional compression techniques and why browser-based tools are replacing desktop software for modern workflows.