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Home/Utilities/Developer

Utility Category

Developer Utilities

Explore free developer utilities including JSON formatters, SQL formatters, regex builders, API testing tools, QR code generators, and more on WebUtilHub.

These tools are especially useful for developers, technical teams, and builders handling code, data, requests, and transformations. Developer utilities are most helpful when they shorten repetitive tasks, reduce formatting friction, and give you a fast browser-based test surface.

Featured developer tools

These are strong entry points if you want to start with the most useful or highest-intent tools in this category.

JSON Formatter

Format and validate JSON.

API Request Tester

Send simple API requests, add headers, test request bodies, and inspect response status, headers, timing, and body.

Regex Builder

Build, test, and copy regular expressions with presets, flags, sample text, and live match results.

cURL to Fetch Converter

Convert cURL commands into JavaScript fetch code for browser or Next.js usage.

Common tasks

Format JSON, SQL, Markdown, and other structured text
Test APIs, headers, request bodies, and response output
Build regex, convert cURL commands, and generate frontend helpers

Search utilities

15 found

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developer

JSON Formatter

Format and validate JSON.

Strong starting point in Developer.

developer

API Request Tester

Send simple API requests, add headers, test request bodies, and inspect response status, headers, timing, and body.

Strong starting point in Developer.

developer

Regex Builder

Build, test, and copy regular expressions with presets, flags, sample text, and live match results.

Strong starting point in Developer.

developer

cURL to Fetch Converter

Convert cURL commands into JavaScript fetch code for browser or Next.js usage.

developer

SQL Formatter

Format, minify, and copy SQL queries for cleaner reading and easier debugging.

developer

AI Ghost Text Cleaner

Remove AI-generated ghost text from your content.

developer

Base64 Encoder Decoder

Encode and decode Base64 strings.

developer

Cron Expression Builder

Build, customize, validate, and copy standard cron expressions for scheduled jobs.

developer

CSS Gradient Generator

Create CSS linear or radial gradients, preview them live, and copy the CSS code.

developer

CSS Keyframe Animation Builder

Create CSS keyframe animations for hover, active, focus, or automatic playback and copy the generated CSS.

developer

Image to Data URI Converter

Convert an uploaded image into a Base64 Data URI for HTML, CSS, JSON, or inline previews.

developer

Markdown Formatter

Format and validate Markdown.

developer

Password Generator

Generate secure passwords.

developer

QR Code Generator

Create QR codes from URLs or text.

developer

UUID Generator

Generate random UUIDs.

Frequently Asked Questions

They are useful for fast one-off tasks, quick debugging, and lightweight testing when opening a heavier local tool would slow you down.