Free Developer &
Engineering Utilities.

Create QR codes for URLs, text, email, phone & WiFi in seconds.

Format, minify and validate JSON with instant syntax error detection.

Encode and decode text or files to/from Base64 format instantly.

Compute MD5, SHA-1, SHA-256 and SHA-512 hashes in real time.

Encode or decode URL components and full URLs for safe transmission.

Decode JSON Web Tokens — inspect header, payload and check token expiry.

Write and test regular expressions with live match highlighting and flags.

Pick colors and convert between HEX, RGB, HSL and CMYK. Generate shades.

Remove image backgrounds instantly using a local AI model (RMBG-1.4). Runs 100% in your browser.

Build a professional resume with live preview. Clean templates and instant PDF export.

Generate complete SEO, Open Graph and Twitter Card meta tags instantly.

Preview how your page looks when shared on Facebook and Twitter/X.

Generate favicons in all standard sizes (16px to 512px) from any image.

Convert images to Base64 data URIs for CSS, HTML or API usage.

Compress CSS by removing comments, whitespace and redundant characters.

Convert text between 8 case formats: UPPER, lower, camelCase, snake_case…

Generate cryptographically strong passwords with custom length and charset.

Compare two blocks of text side-by-side and highlight every difference.

Calculate monthly mortgage payments, total interest and amortization schedule.

Compute compound interest and future investment value with customisable periods.

Estimate monthly car loan payments, total cost and interest over the loan term.

Convert between hourly, daily, weekly, monthly and annual salary figures.

Quickly calculate percentages, percentage change, and reverse percentage lookups.

Merge multiple PDF documents into one directly in your browser. Reorder pages visually.

Create professional PDF invoices with custom line items, tax, discounts and logo.

Generate a custom, GDPR-ready privacy policy for your website or app in minutes.

Draw or type your signature and download as a high-res transparent PNG.

Build clean, tracked campaign URLs with custom source, medium and campaign tags.

Trace HTTP redirect chains, detect redirect loops and view full status code history.

Generate a GDPR-compliant cookie consent banner with custom styling and copy.

Calculate exact age in years, months and days from any date of birth.

Generate a trackable image link to inspect visitor IPs, locations and device info with a 4-digit code.