Developer Tools

Formatters, generators, and converters built for developers — fast and private.

Start Here if You Need Fast Developer Utilities

This hub is built for the kinds of tasks that interrupt development flow: inspecting API payloads, formatting SQL, testing regex patterns, decoding strings, generating hashes, and converting data between formats. The fastest path is usually to start with the tool that matches the data in front of you, then move to a related workflow tool instead of starting over elsewhere.

Debug JSON

Format, validate, and inspect unreadable payloads before you compare or transform them.

Test Patterns

Prototype regular expressions and validate extraction logic on real text.

Decode Data

Handle Base64 strings, tokens, and encoded blobs without leaving the browser.

Most Useful First

JSON Formatter

Best starting point for API and config debugging.

SQL Formatter

Turn unreadable queries into something you can review.

Timestamp Converter

Quickly translate epoch values while debugging logs and APIs.

Common Developer Workflows

API Response Debugging

Start with unreadable JSON, inspect structure, compare changes, and decode embedded values.

Use: JSON Formatter → Diff Checker → Base64

Validation and Parsing

Test patterns, verify dates and strings, then clean up input before moving it through a system.

Use: Regex Tester → Timestamp Converter → URL Encode/Decode

Config and Infra Setup

Generate metadata and crawler rules when shipping a site, app, or integration surface.

Use: Meta Tags → robots.txt → Cron

Formatters

JSON Formatter & Validator

Format, validate, and beautify JSON data instantly in your browser. Free online JSON tool.

SQL Formatter

Format and beautify SQL queries with support for multiple dialects. Free online SQL tool.

Markdown Editor

Write and preview Markdown with live rendering and syntax highlighting. Free online editor.

Markdown to PDF

Convert Markdown to a downloadable PDF file instantly in your browser. Free online converter.

Diff Checker

Compare two text blocks and see additions and deletions highlighted. Free online diff tool.

Generators

Password Generator

Generate strong, random passwords with customizable length and character types. Free and secure.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly. Free online hash tool.

Cron Expression Generator

Build cron expressions visually with a human-readable preview. Free online crontab generator.

Regex Tester

Test regular expressions with real-time match highlighting. Free online regex tool.

robots.txt Generator

Create robots.txt files with a visual editor. Select user-agents, set allow/disallow rules, add sitemap. Free online tool.

Meta Tag Generator

Generate HTML meta tags for SEO, Open Graph, and Twitter Cards. Live Google SERP preview. Free online tool.

Converters

Base64 Encode & Decode

Encode text to Base64 or decode Base64 to text instantly. Free online encoder/decoder.

URL Encode & Decode

Encode text to URL format or decode URL-encoded strings instantly. Free online URL encoder/decoder.

Timestamp Converter

Convert Unix timestamps to dates and dates to Unix timestamps. Free online epoch converter.

JSON to CSV Converter

Convert JSON to CSV or CSV to JSON instantly. Free online converter with download option.

Image to Base64 Encoder

Convert images to Base64 data URIs instantly. Drag and drop, preview, and copy. Free online tool.

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal. Includes ASCII table lookup.

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