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Code & Web Tools

Comprehensive collection of free browser-based tools for Base64 and URL encoding, HTML and CSS formatting, Markdown preview and statistics, and regex validation — everything runs locally without uploads, accounts, or server processing.

13 tools · 9 subcategories

Base64 & URL Encoders

Free Base64 and URL encoder with full Unicode support, RFC 4648 compliance, and real-time preview.

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Try itBase64 Text EncoderEncode text to Base64 with UTF-8 support. RFC 4648 compliant, client-side — no server upload.
Try itPercent Encoding DecoderDecode percent-encoded URLs instantly. Client-side processing — no upload needed.

Base64 & URL Decoders

Free Base64 and URL decoder with strict UTF-8 error handling and malformed input rejection.

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Try itBase64 UTF-8 DecoderDecode Base64 to readable text instantly. Client-side processing — no upload needed.

Base64 File Converter

Free file to Base64 converter with automatic MIME type detection and RFC 2397 data URL output.

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Try itFile to Base64 Data URL ConverterConvert files to/from Base64 format. Image, text, binary support — client-side, no upload.

URL Encoding

Free URL percent encoder with RFC 3986 compliance, Unicode support, and visible escape sequences.

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Try itRFC 3986-Style URI Component EncoderEncode URLs safely with percent-encoding. Client-side processing — no upload needed.

HTML Formatter

Free HTML formatter and beautifier with consistent indentation, tag alignment, and error detection.

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Try itHTML Formatter with PreviewFormat HTML code with proper indentation. Beautify messy HTML instantly — no upload needed.
Try itMarkdown to HTML ViewerMarked parses GFM Markdown and one audited DOMPurify policy removes scripts, forms, images, styles, SVG, embeds, and unsafe URLs before preview or copy.

Markdown Preview

Free GitHub-flavored Markdown preview with syntax highlighting, tables, and sanitized local rendering.

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Try itMarkdown Live PreviewPreview Markdown in real-time with split-pane editor and live rendering. Client-side — no upload.

Markdown Statistics

Free Markdown document statistics with word, character, heading, and reading time counts.

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Try itMarkdown Structure AnalyzerAnalyze Markdown content instantly with word count and readability score. Client-side — no upload.

CSS Formatter

Free CSS formatter and beautifier with consistent indentation, property alignment, and modern syntax support.

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Try itCSS FormatterFormat CSS code with proper indentation. Beautify stylesheets instantly — no upload needed.

Regex, URL & Email Validators

Free regex tester with match highlighting, plus URL and email validators with detailed results.

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Try itRegex TesterTest JavaScript regex patterns with real-time match highlighting, capture groups, and flag toggling. Built-in cheat sheet reference.
Try itURL ValidatorValidate URL format instantly with protocol, domain, and path checks. Client-side — no upload needed.
Try itEmail ValidatorValidate email addresses instantly with syntax check and format verification. Client-side — no upload.
Are these tools private and available offline?

Processing happens locally in browser memory. After the application has been cached, supported tools can continue working offline without sending your input to a server.

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