Free Online Tools

Outils Gratuits en Ligne

35+ developer, business, and productivity tools. Free, fast, no signup required.

35+ Tools
100% Free tier
0 Signup needed

💼Business & Productivity

📱

QR Code Generator

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

FreePro €9New
🧾

Invoice Generator

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

FreePro €14New
📄

Resume / CV Builder

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

FreePro €14New
💼

Calculateur Salaire Freelance

Simulez votre revenu net selon votre statut : auto-entrepreneur, SASU, EURL, portage salarial. Cotisations 2026.

FreeNew
✉️

Générateur Lettre de Motivation

Créez une lettre de motivation professionnelle en 2 minutes. CDI, stage, alternance, freelance. Export PDF.

FreeNew
✉️

Générateur Signature Email

Créez une signature email professionnelle en 2 min. 5 templates, photo/logo, compatible Gmail et Outlook. Copier-coller en un clic.

FreeNew
📝

Générateur de Devis

Créez un devis professionnel en 2 minutes. TVA automatique, export PDF, mentions légales incluses. Freelances & PME.

FreeNew
📋

Facture Generator (FR)

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

Free
📜

Générateur de CGV

Generate French-compliant Terms & Conditions (CGV). E-commerce, SaaS, services templates. Pro: export DOCX, multi-templates.

FreePro €19New
💰

Calculateur ROI Freelance

Calculate freelance profitability, TJM, charges sociales. Pro: compare statuts juridiques, tax optimization.

FreePro €19New
🧮

Calculateur TVA

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

FreePro €14New
📝

Markdown Editor

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

Free
🔀

Diff Checker

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

Free

🛠️Developer ToolsOutils Developpeur

📝

JSON Formatter

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

Free
🔍

Regex Tester

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

Free
📦

Code Minifier

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

Free
🗃️

SQL Formatter

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

Free

Cron Expression Generator

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

Free
🔓

JWT Decoder

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

Free
🏷️

Meta Tag Generator

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

Free
🔄

YAML ↔ JSON Converter

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

Free
📡

HTTP Status Codes

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

Free

🔄Encoding & Conversion

🔠

Base64 Encoder/Decoder

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

Free
🔗

URL Encoder/Decoder

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

Free
🏗️

HTML Entity Encoder

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

Free
💻

Binary Converter

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

Free
🕐

Timestamp Converter

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

Free
🎨

Color Palette Generator

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

Free
🌈

CSS Gradient Generator

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

Free

🔐Security & Crypto

🔑

Password Generator

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

Free
#️⃣

Hash Generator

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

Free
🆔

UUID Generator

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

Free
🛡️

Chmod Calculator

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

Free

🌐Networking

🔢

Subnet Calculator

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

Free
🧮

VLSM Calculator

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

Free
📍

IP Lookup

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

Free
📋

Cisco Config Generator

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

Free

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