Image Optimisation Guides
Practical, expert advice on image compression, web performance, and getting the most out of your images. Written by the CompresslyPro team.
The Complete Guide to Image Compression for the Web in 2026
Everything you need to know about compressing images for websites — from choosing the right format and quality settings to advanced techniques for Core Web Vitals optimisation. Practical, step-by-step advice with real examples.
WebP vs JPG vs PNG: Which Image Format Should You Use?
A detailed comparison of the three most popular web image formats — with recommendations for every use case.
Image SEO Best Practices: How to Rank Images in Google
Learn how to optimise your images for search engines — from file names and alt text to lazy loading and structured data.
How to Reduce Image Size for Email Attachments
Step-by-step guide to compressing photos for email — with specific settings for Gmail, Outlook, and other providers.
Core Web Vitals: How Images Impact Your Google Rankings
Understand LCP, CLS, and INP — and learn exactly how image optimisation can boost your PageSpeed scores.
The Ultimate Batch Image Compression Workflow for Bloggers
How to compress dozens of blog images at once, download as ZIP, and upload to WordPress in minutes.
Best Image Formats for Social Media in 2025 — Complete Size Guide
Exact image dimensions and recommended formats for Facebook, Instagram, Twitter/X, LinkedIn, and Pinterest.
How to Add a Watermark to Photos — Protect Your Images Online
Step-by-step guide to watermarking your photos. Best practices for placement, opacity, and protection levels.
How to Optimise Images for WordPress — Speed Up Your Website
Complete guide to WordPress image optimisation. Reduce load times, improve Core Web Vitals, and boost SEO.
How to Convert Images to PDF — Complete Step-by-Step Guide
Convert JPG, PNG, and WebP images to PDF documents. Merge multiple images with custom page settings.