Development Tools - ToolFK Online Tools - all in one tool

Remove photo backgrounds online and download a transparent PNG. Use it for product photos, portraits, logos, and social graphics.

Crop, annotate, blur, and export screenshots online for product feedback, tutorials, support replies, and social graphics.

Draw and sketch in a free online paint board. Use brushes, shapes, and colors in your browser—no install required.

Encrypt or decrypt PHP source online. Paste code, choose an action, and get protected or readable output without installing software.

Make passport, visa, and ID photos online. Upload a portrait, pick a size and background, then download a print-ready image.

Decompile Android APK files online to inspect resources and structure. Upload an APK for analysis or recompile workflows you own.

Add text or logo watermarks, adjust a photo, and export an HD image online for product previews, portfolios, and social posts.

Create mind maps and flowcharts in the browser. Add nodes, drag to organize ideas, and export diagrams for planning or teaching.

Simulate HTTP requests (GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS) online. Customize headers, cookies, and parameters to optimize your API calls.

Safeguard your Python source code with our online batch obfuscator and encryption tool. Enhance security, protect data confidentiality effortlessly.

Discover Photopea’s free online PS tools for JPG, PNG, and more. Enjoy powerful Photoshop-lite editing in your browser to enhance images fast.

Effortlessly design SQL schemas online. Create tables, define fields, set constraints, and generate SQL scripts with our free, easy-to-use database design tool.

Safeguard your JavaScript code with our free online JS code obfuscator. Advanced encryption, improved security & better performance. Try it now!

Securely encrypt and decrypt text using MD5, SHA1, SHA256, AES, DES & more. Protect your data online. Try our free tool now!

Test and build regular expressions online. Match sample text, try common patterns, and generate code-ready regex for multiple languages.

Encrypt, decrypt, and obfuscate PHP code online with our free Base64 tool. Enhance security, prevent tampering, and safeguard your source in seconds.

Enjoy free online jigsaw puzzles. Generate custom puzzles from your images or try ready-made ones. No download, start solving now!

Convert .htaccess rules to Nginx config online for free. Optimize Apache directives for faster Nginx performance. Try now!

Protect your Java source with our online obfuscation & encryption. Prevent decompilation and secure JAR/WAR files quickly.

Quickly encode and decode Base64 and convert URLs online. Supports image, ASCII, and Unicode conversions. No signup required, free tool.

Convert binary, octal, decimal, hex, and more bases online. Free base conversion tool supporting 2 to 64. Fast and reliable. Try now!

Quickly convert Unix epoch timestamps to date/time and vice versa. Generate, query, and interconvert Unix times online. Fast & easy tool!

Use our free online WebSocket tester to connect, send, receive, and disconnect. Ideal for developers needing fast and reliable WebSocket debugging.

Generate and test Linux crontab expressions online for free. Create precise cron schedules, evaluate syntax, and automate tasks with ease.

Access fast, reliable CDN links for Bootstrap, jQuery, Angular, Vue.js & more. Improve load speed and streamline frontend development. Try it now!