Frequently Asked Questions

Yes, all our developer tools are 100% free to use. No registration required, no usage limits, and no hidden costs. You can access all tools without creating an account.

No, we prioritize your privacy. All processing happens locally in your browser using JavaScript. Your data never leaves your device or gets uploaded to our servers.

Yes, once you load the page, most tools work offline since they run entirely in your browser. However, you'll need an internet connection to initially access the website.

Absolutely! All our tools are responsive and work perfectly on desktop, tablet, and mobile devices. The interface adapts to your screen size for optimal usability.

Simply paste your JSON data into our JSON formatter, and it will automatically format, validate, and beautify your JSON with proper indentation and syntax highlighting.

Our JSON formatter will identify and highlight syntax errors, but you'll need to manually fix them. Common errors include missing commas, unescaped quotes, and trailing commas.

Since processing happens in your browser, the limit depends on your device's memory. Most browsers can handle JSON files up to several megabytes without issues.

Our formatter supports standard JSON specification. For JSON5 or files with comments, you'll need to remove comments before formatting.

Base64 encoding is used to encode binary data into ASCII characters. Common uses include encoding images for HTML/CSS, email attachments, and transmitting binary data over text-based protocols.

Base64 is NOT encryption or security. It's simply encoding for data transmission. Anyone can easily decode Base64 data. Never use it to hide sensitive information.

Our tool currently supports text encoding/decoding. For file encoding, you can copy the file content as text or use browser APIs to read file contents first.

Base64 encoding increases data size by approximately 33% because it represents 3 bytes of binary data using 4 ASCII characters.

For security: Use SHA-256 or SHA-512. For checksums: MD5 or SHA-1 are acceptable. For passwords: Use bcrypt, scrypt, or Argon2 (not available in our tool).

MD5 and SHA-1 have known vulnerabilities and shouldn't be used for security purposes. They're acceptable for checksums and non-security applications.

Our tool currently hashes text input. For file hashing, you'd need to read the file content first or use command-line tools like 'shasum' or 'md5sum'.

MD5 produces 128-bit hashes, SHA-1 produces 160-bit hashes, and SHA-256 produces 256-bit hashes. Longer hashes are generally more secure and collision-resistant.

Our JWT decoder runs entirely in your browser, so tokens aren't sent to servers. However, never decode production tokens containing sensitive data on any online tool.

Our tool decodes and displays JWT contents but doesn't verify signatures since that requires the secret key. It's primarily for inspecting token structure and claims.

JWT tokens contain three parts: header (algorithm info), payload (claims/data), and signature (verification). Our tool shows the decoded header and payload.

The signature is used for verification and doesn't contain readable data. It's a cryptographic hash that requires the secret key to verify.

Use our regex tester to input your pattern and test string. The tool will highlight matches, show capture groups, and help debug your regular expressions.

Our regex tester uses JavaScript regex flavor (ECMAScript), which is widely used in web development and supports most common regex features.

Common issues include unescaped special characters, incorrect quantifiers, or wrong anchors. Our tester helps identify these issues with real-time feedback.

Currently, patterns aren't saved automatically. Copy your working patterns to save them. We may add pattern saving features in future updates.