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Free tools for everyday coding work. No signup, and they run in your browser.
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About WebToolsKit Developer Tools
WebToolsKit developer tools are lightweight utilities for everyday coding work. Format JSON, decode a JWT, test a regex or convert data between formats. Tools run in your browser using JavaScript, and your input is not sent to our server.
All Developer Tools
| Tool | What it does |
|---|---|
| JSON Formatter | Format, beautify, minify and validate JSON. |
| Base64 Encoder / Decoder | Encode text to Base64 or decode it back. |
| Diff Checker | Compare two texts or code snippets and see what changed. |
| JSON to C# Converter | Generate C# classes from JSON, or sample JSON from C# classes. |
| JSON to XML Converter | Convert between JSON and XML. |
| JWT Decoder / Encoder | View a token's header and payload, verify HS256 signatures and create HS256 test tokens. |
| Regex Tester | Test JavaScript regular expressions with live match highlighting. |
| URL Encoder / Decoder | Encode or decode URLs and query parameters. |
| Unix Timestamp Converter | Convert Unix timestamps to dates and back. |
| JSON to CSV Converter | Convert JSON to CSV and CSV back to JSON. |
| UUID / GUID Generator | Generate UUIDs, including in bulk. |
| Hash Generator | Generator: MD5, SHA-1, SHA-256 & SHA-512. |
| JS & Jquery Tester | JavaScript & jQuery Error Tester – Find Errors and Check. |
| Sql Formatter | Format and beautify Standard sql, mysql, PostgreSQL, SQL Server (T-SQL), Oracle (PL/SQL), SQLite and BigQuery. |
| HTML, CSS and JS Minifier | Reduce file size. Or use the HTML, CSS and JavaScript minifier separately. |
| Cron expression generator | Build cron schedules or decode any cron expression into plain English, with the next run times shown instantly. |
| json to yaml converter | Validate your input, see the exact line of any error and copy or download the result. |
| json to typescript | Paste any JSON and get clean TypeScript interfaces or types in one click. Nested objects, arrays and optional fields are handled for you. |
| color converter | Paste any color code, pick a color or type a color name and see it in every format at once. Copy HEX, RGB, HSL, HSV or CMYK in one click and check text contrast. |
| markdown previewer | Write Markdown on the left and see the formatted result on the right as you type. Tables, task lists and code blocks are supported. Copy the HTML, download a file or save as PDF. |
| css gradient generator | Pick any color and copy it as HEX, RGB or HSL, or build a linear or radial gradient and copy the ready-made CSS. See the result in a live preview as you work. |
| Favicon Generator | Pick any color and copy it as HEX, RGB or HSL, or build a linear or radial gradient and copy the ready-made CSS. See the result in a live preview as you work. |
| SVG Optimizer | Pick any color and copy it as HEX, RGB or HSL, or build a linear or radial gradient and copy the ready-made CSS. See the result in a live preview as you work. |
| SSL Checker | Pick any color and copy it as HEX, RGB or HSL, or build a linear or radial gradient and copy the ready-made CSS. See the result in a live preview as you work. |
| Bcrypt Generator | Pick any color and copy it as HEX, RGB or HSL, or build a linear or radial gradient and copy the ready-made CSS. See the result in a live preview as you work. |
| Lorem Ipsum Generator | Generate Lorem Ipsum dummy text as paragraphs, sentences, words or list items. Copy as plain text or HTML and see the word and character count. Free. |
| html entity converter | HTML Entity Converter - Encode and Decode HTML Entities | Free Online Tool |
| Meta Tag Generator | Create title, description, Open Graph and Twitter Card meta tags, see an approximate Google search preview and copy the code. Free and runs in your browser. |
Quick Example: Unix Timestamp
| Unix timestamp | UTC | IST |
|---|---|---|
1727074800 |
23 Sep 2024, 07:00:00 | 23 Sep 2024, 12:30:00 PM |
Why Use WebToolsKit?
- Free: No signup, no limits.
- Private by design: Tools process your input in your browser and do not send it to our server.
- Mobile friendly: Lightweight pages that work on phones too.
Frequently Asked Questions
1. Are these developer tools free?
Yes, all tools are free and need no signup.
2. Is my code sent to your server?
No. Tools process your input in your browser. Still, avoid pasting real passwords, API keys or production tokens into any online tool.
3. Do I need to install anything?
No, everything works in your browser.
4. Which developer tools are available?
JSON Formatter, Base64, Diff Checker, JSON to C#, JSON to XML, JWT Decoder, Regex Tester, URL Encoder/Decoder, Unix Timestamp Converter, JSON to CSV, UUID Generator and HTML/CSS/JS minifiers.