Catalogue d’outils en ligne gratuits

Explain any code snippet in plain language — understand what the code does.

Remove duplicate lines from text and optionally sort or count them.

Download YouTube video thumbnails in all available resolutions.

Generate a valid XML sitemap with URLs, priorities, change frequencies, and last modified dates.

Generate .htaccess rules for redirects, HTTPS enforcement, caching, CORS, and security headers.

Check if ports are open on any host or IP address.

Minify and compress JavaScript code to reduce file size and speed up your site.

Analyze a User-Agent string: browser, OS, device type and engine.

Convert colors between HEX, RGB, HSL and CMYK formats with a live preview.

Generate images from text descriptions using DALL-E 3.

Calculate IPv4 subnet parameters using CIDR notation.

Upscale image resolution without noticeable quality loss using AI.

Create unique avatars in various styles using DALL-E 3.

Create logos for your brand using DALL-E 3.

Extract text from images using OCR powered by GPT-4o Vision.

Convert special characters to HTML entities and back.

Format, beautify, and minify SQL queries with keyword highlighting.

Convert code between programming languages using AI.

Decode JWT tokens and analyze header, payload, claims, and expiration without sending your secret key.

Instantly convert Markdown to HTML and preview formatting before publishing.

Test your typing speed — type the text and get WPM, accuracy, and rating results.

Format, validate, and minify XML documents with proper indentation and error detection.

Minify and optimize code using AI.

Convert units of length, weight, temperature, volume, area, speed, and digital data with high precision.