Free Developer Tools

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 — no upload, no API.

Build a professional resume with live preview. Choose from 3 templates, drag-to-reorder sections, and export as PDF instantly.

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.

Create professional PDF invoices with line items, taxes and your logo.

Generate a GDPR-compliant privacy policy for your website or app in minutes.

Design a professional email signature with your logo, social links and branding.

Build UTM-tagged campaign URLs for Google Analytics and other trackers.

Trace HTTP redirect chains and check status codes for any URL instantly.

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.

Upload an image, generate a trackable link, and see visitor IPs, locations and device info via a 4-digit secret code.