Developer Tools
.htaccess Generator
Generate Apache .htaccess files with HTTPS redirect, WWW handling, custom redirects, error pages, IP blocking, compression, caching, and security features
19 Free Tools
Developer Tools
The miscellaneous drawer every developer reaches for — regex, diffs, UUIDs, timestamps, cron expressions and validators — each one focused and instant.
Every developer keeps a mental list of small utilities they need weekly: a regex sandbox, a diff viewer, a UUID source, a timestamp converter.
This category collects those workbench tools in one place, so you're not scattering across a dozen bookmarks mid-task.
They run in the browser and give you an answer immediately.
Developer Tools
Crontab Expression Generator
Generate and test cron expressions with visual interface. Features quick presets, human-readable descriptions, next run times calculator, and crontab entry examples
Developer Tools
cURL to Code Converter
Convert cURL commands into code for 15+ programming languages instantly. Perfect for developers who need to translate API requests from cURL format into their preferred programming language.
Developer Tools
Diff Checker
Compare two texts or code blocks to find differences. Supports character, word, and line-by-line comparison with side-by-side and inline views
Developer Tools
Live Content Previewer Tool
Instantly retrieve a content from remote URL and show it nicely in a Facebook-like layout using the Live Content Previewer tool.
Developer Tools
Regex Tester & Explainer
Test and debug regular expressions with live matching, syntax highlighting, pattern explanation, and common regex examples. Supports all JavaScript regex flags
Developer Tools
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Features live current timestamp, batch conversion, timestamp calculator, and multiple format outputs
Developer Tools
URL Parser
Parse and analyze URLs with detailed breakdown of all components including protocol, host, path, query parameters, and hash. Features JSON output and individual component copying
Developer Tools
UUID / GUID Generator
Generate UUIDs (v1, v4) and GUIDs with bulk generation, validation, and parsing. Supports multiple formats including standard, compact, uppercase, braces, and URN
Developer Tools
HTTP Status Codes Reference
Free HTTP status codes reference. Search and filter every 1xx-5xx code with a plain-language explanation of what it means and when it is used, right in your browser.
Developer Tools
JSONPath Tester
Free online JSONPath tester to run and debug JSONPath expressions against any JSON document live, with example queries, match count, and pretty results.
Developer Tools
String Escape / Unescape
Free online string escape and unescape tool. Escape strings for JSON, JavaScript, HTML, XML, CSV, SQL, unicode \uXXXX, and backslash contexts right in your browser.
Developer Tools
Unicode Character Lookup
Free online Unicode character lookup. Inspect any text or code point to see the U+ code point, decimal, UTF-8 bytes, UTF-16 units, HTML entity, and JS escape.
Developer Tools
SVG to CSS Encoder
Free online SVG to CSS encoder. Convert raw SVG markup into an optimized, URL-encoded data URI for background-image, plus Base64 and HTML img src variants, in your browser.
Developer Tools
Credit Card Validator
Check a credit card number with the Luhn algorithm and detect the brand (Visa, Mastercard, Amex, and more). Format check only — 100% client-side, nothing sent to any bank.
Developer Tools
Email Validator
Validate email address syntax and catch common domain typos like gmial.com. Check one address or a whole list at once — 100% client-side, nothing uploaded.
Developer Tools
Chmod Calculator
Free online chmod calculator. Tick read, write, and execute boxes for owner, group, and other to get the octal value, symbolic string, and ready-to-run chmod command.
Developer Tools
Text to Hex Converter
Free online text to hex converter. Encode text to hexadecimal bytes or decode hex back to text, with UTF-8 support, spacing options, and 0x or backslash-x styles.
Developer Tools
HTML Tag Stripper
Free online HTML tag stripper. Paste HTML and get clean plain text with all tags removed, plus options to decode entities, collapse whitespace, and keep line breaks.
Test before you ship
Some code is worth checking in isolation first. The Regex Tester & Explainer matches your pattern against sample text and explains what each part does, and the Diff Checker highlights exactly what changed between two versions of a file or string.
Identifiers and time
Backends run on IDs and timestamps. The UUID / GUID Generator produces unique identifiers on demand, and the Unix Timestamp Converter translates between epoch seconds and human-readable dates in any timezone.
Config and validation
Configuration syntax is easy to get wrong. The Crontab Expression Generator builds a schedule from plain-language options, and the .htaccess generator assembles common Apache rules.
Rounding it out, the email and credit-card validators check input against real format rules — all locally, with nothing sent away.
Good to know
Frequently Asked Questions
Do these developer tools run offline?
Once loaded, the utilities run in your browser, so most keep working without a connection. Your input is never uploaded.
Does the regex tester explain my pattern?
Yes. The Regex Tester & Explainer shows live matches against your test string and breaks down what each token in the pattern does.
What UUID versions are supported?
The UUID / GUID Generator produces standard random (v4) identifiers, and you can generate them in bulk for seeding data or testing.
Is the credit card validator safe to use?
Yes. It checks a number against the Luhn algorithm and known card patterns entirely in your browser. It validates format only and never stores or transmits the number.
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