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Practical image guides

Complete tutorials on image compression, conversion, optimization and editing for web and social media.

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How to compress images without losing quality

Heavy images slow down sites. Learn to reduce files by up to 80% without sacrificing quality.

Lucas Ferreira · 12 fev 2025 · 8 min read

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JPG vs PNG vs WebP — which format to use?

Understand the differences between formats and choose the right one for each situation.

How to convert images to PDF

Transform photos into PDF for documents, assignments and professional sharing.

How to reduce photo size for WhatsApp

Learn to reduce photos for fast WhatsApp sending without quality loss.

Best image format for Instagram

Discover the best format, size and resolution for Instagram posts with maximum quality.

What is WebP and why use it

Understand the WebP format and its advantages over JPG and PNG for the modern web.

How to optimize images for SEO

Complete guide: format, size, alt text and lazy loading to improve your rankings.

How to add a watermark to a photo

Protect your photos with text or logo watermark. Free, online and without installing anything.

How to crop an image online

Crop images with free or fixed ratios — 1:1, 16:9, 4:3 — directly in the browser.

How to convert image to PDF for free

Combine JPG, PNG and WebP photos into a single PDF in the browser, without server uploads.

Ideal image size for websites

Complete guide: ideal dimensions, formats and file sizes for each type of image.

How to resize an image without losing quality

Change width and height while maintaining ratio — with size table for all social networks.

Resolution vs file size

Understand once and for all the difference between pixels, DPI and KB/MB.