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HomeAll Tags › # Web

# Web

Web development, URL and page analysis tools.

Tools with this tag · 62 tags
Related Articles

Why JSON: The Advantages of a Universal Data Format

Simple, cross-language, fast to parse, with a mature tool ecosystem — JSON became the default for APIs and config files thanks to these traits. Here are its core advantages and use cases.

2026-08-28Read More →

JSON Guide: Format, Validate and Convert

JSON error driving you mad? API responses hard to read? This guide shows how to format, minify and validate JSON, plus convert between JSON, CSV, YAML and XML — all free on HeronTool.

2026-08-28Read More →

The History of JSON: From JavaScript to the Lingua Franca of APIs

In 2001 Douglas Crockford distilled a minimal data format from JavaScript object literals. Two decades later it became the common language of internet APIs. Here is the story of JSON's birth, standardization and rise.

2026-08-28Read More →

Why PDF: The Advantages of a Fixed-Layout Format

WYSIWYG fidelity, cross-device consistency, resistance to casual editing, self-contained fonts and images — PDF delivers "document determinism" at its best. Here are its core advantages and use cases.

2026-08-28Read More →

PDF Guide: Merge, Split and Compress

Combine PDFs into one, split a big file into single pages, and slim down oversized PDFs — these daily chores are free and fully local in your browser on HeronTool.

2026-08-28Read More →

The History of PDF: A Document Standard That Spans Three Decades

Released by Adobe in 1993, PDF grew from founder John Warnock's vision: documents that look identical on any device. Three decades later it is the world's default format for exchanging documents. Here is its story, standardization and present.

2026-08-28Read More →

Why QR Codes: Advantages for Businesses and Websites

No app needed, scannable anywhere, decent capacity and built-in error correction — QR codes shrink the gap between offline and online to a single scan. Here are their core advantages and typical uses.

2026-08-28Read More →

Why WebP: The Advantages of a Modern Image Format

Smaller files, better quality, more capabilities — WebP supports lossy, lossless, transparency and animation at once, and is becoming the de facto standard for web images. Here are its core advantages and use cases.

2026-08-28Read More →

WebP Guide: Convert, Compress and Stay Compatible

Convert JPG/PNG to WebP, turn WebP back to common formats, and compress WebP files — this guide walks you through a complete WebP workflow using free HeronTool utilities.

2026-08-28Read More →

The Story of the WebP Image Format

Born in 2010 from VP8 video encoding and now a mainstream, fully browser-supported web image format, WebP traveled an extraordinary path. This article looks back at its origins, milestones and current status.

2026-08-28Read More →
HTML Encoder Encode or decode HTML entities to escape special chars. Web URL Encoder/Decoder URL-encode or decode, handling Chinese and special chars. Web Color Converter Convert colors between HEX / RGB / HSL. Web XML Formatter Pretty-print and indent XML. Web HTML Formatter Format and indent HTML code. Web CSS Formatter Tidy up CSS rules. Web JS Minifier Minify JavaScript code. Web SQL Formatter Format and indent SQL. Web UUID Generator Generate RFC4122 UUIDs. Web Password Generator Generate strong random passwords. Web JWT Decoder Decode and inspect JWT payload. Web URL Parser Parse a URL into its parts. Web User-Agent Parser Parse a browser User-Agent string. Web MIME Lookup Look up MIME type by extension. Web Markdown to HTML Render Markdown to HTML live. Web Slug Generator Make a URL-friendly slug from a title. Web HTTP Status Look up HTTP status code meanings. Web Basic Auth Generator Build an Authorization: Basic header from credentials. Web Docker Run to Compose Convert a docker run command into compose YAML. Web IPv4 Subnet Calculator Compute network, mask, broadcast and host range. Web IPv4 Range Expander Expand an IP range into the full list of addresses. Web IPv4 Address Converter Convert IPv4 between dotted, integer, hex and binary. Web MAC Address Generator Generate random MAC addresses in common formats. Web Random Port Generator Pick a random TCP/UDP port within a range. Web Keycode Info Press any key to see its event.key, code and keyCode. Web Device Information Inspect your browser, OS, screen and hardware info. Web IBAN Validator Validate and parse an International Bank Account Number. Web