Marketly Learning Hub

Guides & Tutorials

Learn practical workflows, common mistakes, and useful tips before trying a tool.

How to Merge PDF Files Online

Learn how to combine PDF documents in the right order, check the final file, and avoid common merging mistakes.

Understand image compression, compare formats, and find settings that balance clarity and smaller files.

Learn how to make a professional invoice with a worked example, payment terms, invoice numbering and practical checks before sending.

Learn to read, format, and troubleshoot JSON, including quotation marks, commas, and nesting errors.

Choose practical image dimensions, preserve aspect ratio, and avoid blurry or distorted website graphics.

Understand what EXIF metadata can contain and how to check images before sharing them online.

Understand transparency, backgrounds, and quality tradeoffs before converting PNG images to JPEG.

Set up social sharing titles, descriptions, and preview images with consistent page URLs.