jpegoptim Optimize JPEG

jpegoptim guides & articles

14 in-depth guides on jpegoptim and related topics.

JPEG optimisation how-to

JPEG optimisation how-to jpegoptim Commands: Install, Flags and Batch Examples Practical jpegoptim command line reference: install, flags for quality, size, metadata, progressive, and recursive batch processing. 5 min read JPEG optimisation how-to How to Optimize JPEG Files for Faster Web Pages A practical, step-by-step guide to optimising JPEG files for the web by choosing the right quality, stripping metadata, optimising Huffman tables, and enabling progressive encoding. 6 min read JPEG optimisation how-to What Is jpegoptim and How Does It Shrink JPEGs? An introduction to jpegoptim explaining how it shrinks JPEG files through Huffman table optimisation, metadata stripping, and optional re-compression, with a step-by-step usage walkthrough. 6 min read

Web performance & images

Web performance & images Lazy Loading Images the Right Way Native lazy loading defers off-screen images, but the LCP hero image must not be lazy-loaded; combine with JPEG optimisation for best results. 3 min read Web performance & images Images and Core Web Vitals: Fixing LCP, CLS and INP A guide connecting image optimisation to Core Web Vitals, showing how to fix LCP with lighter heroes, prevent CLS with image dimensions, and help INP by right-sizing files. 6 min read Web performance & images How to Optimize Images for the Web: A Complete Guide An end-to-end guide to optimising images for the web, covering right-sizing, format choice, intelligent compression, metadata stripping, and responsive, lazy-loaded delivery for speed. 5 min read

JPEG internals

JPEG internals JPEG Chroma Subsampling: 4:4:4 vs 4:2:0 Explained JPEG chroma subsampling explained: how 4:4:4, 4:2:2, and 4:2:0 save space and when they cause visible blur on red text and thin lines. 4 min read JPEG internals JPEG Compression Explained: How the Format Works A clear walkthrough of how JPEG compression works, from colour conversion and chroma subsampling through the DCT, quantisation, and entropy coding, and why some images compress better. 6 min read JPEG internals Lossless JPEG Optimization: Smaller Files, Zero Loss A guide to lossless JPEG optimisation explaining how Huffman table optimisation, metadata stripping, and progressive re-ordering reduce file size without altering any pixel data. 6 min read JPEG internals Progressive vs Baseline JPEG: Which Loads Faster? A clear comparison of progressive and baseline JPEG layouts, covering how each loads, file-size differences, decode cost, and when to use one over the other on the web. 5 min read JPEG internals How to Strip EXIF Metadata From JPEG Files Safely A guide to stripping EXIF and other metadata from JPEG files to protect privacy and reduce size, explaining what each metadata type is and what is safe to keep. 5 min read

Build pipeline tips

Build pipeline tips jpegoptim vs MozJPEG vs jpegtran: Which to Use? Choose the right JPEG tool: jpegtran for lossless transforms, MozJPEG for encoding from originals, jpegoptim for optimising existing files. 4 min read Build pipeline tips How to Automate Image Optimization in Your Pipeline A guide to automating image optimisation across build time, upload time, and delivery time so every image ships compressed and right-sized without anyone remembering to do it. 6 min read

WebP & modern formats

WebP & modern formats JPEG vs WebP: Which Format Should You Use in 2026? A detailed comparison of JPEG and WebP covering file size, quality, transparency, and browser support, with guidance on when to use each and how to convert with a fallback. 5 min read