Free Online Tools

Generate QR codes for URLs, text, WiFi, vCards. Download as PNG. Pro: custom colors, logo, bulk generation.

Create professional invoices and quotes. Add line items, tax, discounts. Export as PDF. Pro: templates, logo, stamps.

Build a professional resume with live preview. Export as PDF. Pro: 8+ premium templates, ATS optimization.

Simulate your net income by status: auto-entrepreneur, SASU, EURL, portage salarial. 2026 contributions.

Create a professional cover letter in 2 minutes. Permanent, internship, apprenticeship, freelance. PDF export.

Create a professional email signature in 2 min. 5 templates, photo/logo, Gmail & Outlook compatible. One-click copy.

Create a professional quote in 2 minutes. Automatic VAT, PDF export, legal mentions included. Freelancers & SMBs.

Generate French-compliant invoices with TVA, SIRET, and all legal requirements. Export to PDF.

Calculate French VAT (HT↔TTC). All rates: 20%, 10%, 5.5%, 2.1%. Batch mode. Pro: EU multi-country, CSV export.

Write Markdown with live preview. Export to HTML. Supports GFM, tables, code blocks, and more.

Compare two texts side by side. Highlights additions, deletions, and modifications line by line.

Format, validate, and minify JSON. Syntax highlighting, tree view, and error detection.

Test regular expressions in real-time. Match highlighting, capture groups, and common patterns library.

Minify HTML, CSS, and JavaScript code. Reduce file size for faster page loads.

Format and beautify SQL queries. Supports MySQL, PostgreSQL, SQLite syntax.

Build cron expressions visually. Human-readable descriptions and next execution times.

Decode and inspect JSON Web Tokens. View header, payload, and verify expiration.

Generate SEO meta tags, Open Graph, and Twitter Card tags. Preview how your page looks on social.

Convert between YAML and JSON formats instantly. Validates and prettifies output.

Quick reference for all HTTP status codes. Descriptions, use cases, and common responses.

Encode and decode Base64 strings. Supports text and URL-safe encoding.

Encode and decode URLs. Handle special characters and query parameters safely.

Encode and decode HTML entities. Prevent XSS and display special characters safely.

Convert between binary, decimal, hexadecimal, and octal. Essential for networking.

Convert Unix timestamps to human dates and back. Multiple timezone support.

Generate harmonious color palettes. Convert between HEX, RGB, HSL. Copy CSS variables.

Create linear, radial, and conic gradients visually. Copy CSS code instantly.

Generate strong, unique passwords. Customizable length, characters, and complexity.

Generate MD5, SHA-1, SHA-256, SHA-512 hashes. Verify file integrity and hash strings.

Generate UUIDs (v1 and v4). Bulk generation and format validation.

Calculate Linux file permissions. Visual toggle between symbolic and numeric notation.

Calculate CIDR, subnet masks, IP ranges, host count. Binary representation and subnetting table.

Optimize IP address allocation with Variable Length Subnet Masking. CCNA essential.

Look up IP address information. Geolocation, ISP, ASN, and reverse DNS.

Auto-generate Cisco router and switch configs. VLANs, ACLs, OSPF, EIGRP.