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Developer Tools

Small developer utilities for formatting, encoding, and quick checks.

Not every development task needs a full local setup. These browser tools cover common formatting and conversion jobs used while testing APIs, preparing snippets, debugging payloads, or cleaning values before reuse.

JSON Formatter & Validator

Format raw JSON, inspect structure more clearly, and catch malformed input faster.

Open tool

Base64 Encode/Decode

Encode or decode text quickly when checking tokens, payloads, embeds, or test data.

Open tool

HTML Encode Text

Escape text for HTML contexts before pasting it into snippets, examples, or templates.

Open tool

HTML Decode Text

Turn encoded entities back into readable text when reviewing copied markup or output.

Open tool

Why this section matters

Developer utility pages work best when they are immediate, predictable, and easy to trust. The category keeps common data tasks close together so a quick format, encode, decode, or validation step does not interrupt the main workflow.

Typical workflows

  • Checking API payloads before sending or sharing requests
  • Encoding and decoding values during debugging
  • Preparing HTML snippets, escaped text, and example output
  • Using lightweight utilities from any device without installing packages

Full archive

21 tools found

JSON Formatter & Validator
Format raw JSON with readable indentation and validate syntax before using a payload in code, docs, or API tools.Open toolJSON Formatter & Validator
Base64 Encode/Decode
Encode text to Base64 or decode Base64 back into readable text for quick API, header, token, and payload checks.Open toolBase64 Encode/Decode
HTML Link Builder
HTML Link Builder helps clean or transform pasted text quickly in the browser.Open toolHTML Link Builder
HTML Encode Text
HTML Encode Text helps clean or transform pasted text quickly in the browser.Open toolHTML Encode Text
HTML Decode Text
HTML Decode Text helps clean or transform pasted text quickly in the browser.Open toolHTML Decode Text
.htaccess Redirect Generator
Apache redirect rule snippet.Open tool.htaccess Redirect Generator
Agent Tool Call Tester
Check an agent's proposed tool call against a JSON Schema and locate invalid arguments before execution.Open toolAgent Tool Call Tester
AI Output Benchmark
Compare two sets of structured AI answers against expected JSON and an optional schema, case by case.Open toolAI Output Benchmark
Anchor Link Generator
Anchor link HTML snippet for internal navigation.Open toolAnchor Link Generator
Extract HTML Tags
Extract HTML Tags pulls matching values out of mixed content and returns a clean list.Open toolExtract HTML Tags
Iframe Generator
Iframe embed snippet with common attributes.Open toolIframe Generator
Mailto Link Generator
Clickable mailto link HTML snippet.Open toolMailto Link Generator
Nginx Redirect Generator
Nginx redirect rule snippet.Open toolNginx Redirect Generator
Script Tag Generator
Script tag snippet for external JS files.Open toolScript Tag Generator
SQL IN Clause Generator
SQL IN clause built from comma-separated values.Open toolSQL IN Clause Generator
Strip HTML Tags
Strip HTML Tags helps clean or transform pasted text quickly in the browser.Open toolStrip HTML Tags
Stylesheet Link Generator
Link tag snippet for external CSS files.Open toolStylesheet Link Generator
Telephone Link Generator
Clickable tel link HTML snippet.Open toolTelephone Link Generator
URL Decode Text
Decode percent-encoded URL text so query strings, UTM values, redirect targets, and copied links become readable again.Open toolURL Decode Text
URL Encode Text
Encode text for safe use inside URLs, query strings, UTM values, redirect targets, and copied links.Open toolURL Encode Text
WebMCP Tool Tester
Check a WebMCP tool definition and sample arguments against its input schema in your browser.Open toolWebMCP Tool Tester

Guides for this category

Use these guides when you need context before choosing a tool.

JSON Errors Explained for Non-Backend DevelopersUnderstand broken JSON before using formatters or validators.Read guideHow to Safely Clean Copied API Examples Before TestingClean pasted request examples before sharing or testing them.Read guideURL Encoding vs HTML Encoding: Why They Are Not InterchangeableChoose the right encoding check for URLs, HTML and support logs.Read guide