๐Ÿ’ป Web & Developer

Web & Developer Tools

24 free developer tools for encoding, formatting, generating, and converting. JSON, Base64, regex, UUID, hashing, colour codes, QR codes, cron expressions and server redirects โ€” all in your browser.

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๐Ÿ’ป Web & Developer Tools

What Are Web & Developer Tools?

Web and developer tools are utilities that handle the routine tasks of software development, web design, and IT work โ€” encoding and decoding data, formatting code, generating identifiers, testing patterns, converting between formats, scheduling jobs, and creating assets like QR codes. Instead of writing throwaway scripts or searching Stack Overflow for one-liners, you get an instant result from a focused tool. Everything runs in your browser, is free, and keeps your data private.

Data Encoding & Formatting

The JSON formatter prettifies, validates, and minifies JSON โ€” essential for debugging API responses and config files. The Base64 encoder encodes and decodes Base64 strings, commonly used for embedding images, encoding API keys, and data transfer. The URL encoder percent-encodes and decodes URLs and query parameters โ€” necessary when special characters in URLs would otherwise break requests.

Pattern Matching & Testing

The regex tester lets you write and test regular expressions against sample text with live highlighting, match groups, and flag controls. It’s the fastest way to build and debug a regex without running your full application. Regex is used in virtually every programming language for pattern matching, validation, and text extraction.

๐Ÿ’ก Building regex incrementally produces better results than trying to write the whole pattern at once. Start with the simplest match, test it, then add complexity. The live highlighting in the regex tester makes this iterative process fast.

Generators

The UUID generator creates universally unique identifiers (v4) for databases, APIs, and distributed systems. The hash generator computes MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes for integrity checking and fingerprinting. The password generator creates cryptographically strong random passwords with configurable length and character types. The cron expression generator builds cron schedules visually with dropdowns and presets. The QR code generator creates scannable QR codes for URLs, text, Wi-Fi credentials, and more.

Scheduling & Server Configuration

Two tools handle the operations side of web development. The Cron to English translator works in the opposite direction from the cron expression generator above โ€” paste an existing cron string and get a plain-English description back, useful when inheriting someone else’s deploy schedule or debugging an unfamiliar scheduled job. The .htaccess redirect generator writes correct Apache redirect rules โ€” single-page 301s, HTTPS enforcement, www normalisation, and domain moves โ€” without having to hand-write RewriteRule syntax from scratch.

Converters

The color converter translates between HEX, RGB, HSL, and other colour formats. The hex-to-decimal converter converts between hexadecimal, decimal, binary, and octal. The number base converter handles any base conversion. The binary-to-text converter and binary translator convert between binary representation and readable text. The Unix timestamp converter translates between epoch seconds and dates.

Content & SEO Tools

The Lorem Ipsum generator creates placeholder text for designs and wireframes. The hashtag generator suggests relevant hashtags for social media. The meta description generator helps craft SEO-friendly page descriptions within Google’s recommended character limits. For AI-powered content work, see the AI prompt generator and AI token counter in the AI category.

Security Best Practices

Several tools in this category touch on security. The password generator creates strong passwords using the browser’s cryptographic random number generator โ€” far safer than choosing passwords yourself. The hash generator computes one-way hashes for verifying file integrity and storing password hashes. All tools run entirely in your browser โ€” no data is sent to any server, which is critical when working with passwords, API keys, redirect rules, or sensitive data.

Related Tools

Developer work frequently overlaps with other categories. The AI token counter counts tokens for LLM APIs. The LLM API cost calculator estimates AI API spend. The word counter and character counter measure text. The percentage calculator handles quick maths. And the reading time calculator estimates how long documentation takes to read.

Frequently Asked Questions

Is my data safe in these tools?
Yes. Every tool runs entirely in your browser โ€” no data is uploaded, sent to a server, or stored. You can safely use them with API keys, passwords, production JSON, redirect rules, and sensitive code. They work offline once the page has loaded.
How do I format JSON?
Paste your JSON into the JSON formatter and it prettifies it with proper indentation, validates the syntax, and highlights any errors. You can also minify it for production use.
What is Base64 encoding?
Base64 converts binary data into a text format using 64 ASCII characters. It’s used to embed images in HTML/CSS, encode data for APIs, and transfer binary content through text-only channels. The Base64 encoder handles both encoding and decoding.
How do I generate a UUID?
Click generate on the UUID generator. It produces a random v4 UUID using the browser’s cryptographic random source, formatted as the standard 8-4-4-4-12 hexadecimal string.
What hash algorithm should I use?
For file integrity checks, SHA-256 is the standard. MD5 and SHA-1 are faster but have known vulnerabilities and shouldn’t be used for security purposes. For password hashing, none of these are suitable on their own โ€” use bcrypt or Argon2 in your application. The hash generator supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512.
How long should a password be?
At least 16 characters for strong security, mixing uppercase, lowercase, numbers, and symbols. The password generator creates passwords up to any length with configurable character types. Longer is always better โ€” 20+ characters for critical accounts.
How do I read an unfamiliar cron expression?
Paste it into the Cron to English translator, which breaks down each of the five fields (minute, hour, day, month, weekday) and returns a plain-English description of when the job runs.
What’s the difference between a 301 and 302 redirect?
A 301 redirect is permanent and passes SEO value to the new URL. A 302 redirect is temporary and keeps the original URL indexed. The .htaccess redirect generator defaults to 301s for the common cases (single-page moves, HTTPS, www).
Are these tools free?
Yes โ€” completely free, no sign-up, unlimited use. They run in your browser on any device.
Explore Other Categories
๐Ÿ’ฐ Finance & Money๐Ÿƒ Health & Fitness๐Ÿงฎ Math & Algebra๐Ÿ“… Date & Timeโœ๏ธ Text & Writing๐Ÿ–ผ๏ธ Image Tools๐Ÿš— Automotive๐Ÿ  Home & Construction๐Ÿ”„ Unit & Currencyโ˜ช๏ธ Islamic & Cultural๐Ÿค– AI & Productivity
Related Tools
๐Ÿค–AI Token Counter ๐Ÿ’ฐLLM API Cost Calculator ๐Ÿ”ขWord Counter ๐Ÿ”กCharacter Counter ๏ผ…Percentage Calculator ๐Ÿ“–Reading Time
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