Building a Zero-Server Image Resizer with JavaScript
Build a private browser-based image resizer using JavaScript, Canvas API, and Blob URLs without servers or uploads.
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Better images, fewer guesses
Practical guides for choosing dimensions, controlling file size, and understanding what image compression changes.
Follow the blog via RSSSocial Media Image Sizes for Every Major Platform
Find the recommended image sizes for Instagram, Facebook, LinkedIn, X, YouTube, TikTok, Pinterest, and Threads.
Read guideHow to Resize Images Without Uploading Them
Learn how to resize images locally in your browser without uploading them to a server. Fast, private, and completely free.
Read guideAbout these image guides
Every guide focuses on a decision that appears during ordinary image resizing. Some explain common dimensions, while others look at compression, privacy, and the differences between JPEG, PNG, and WebP.
The examples support the private image resizer available on this site. Articles are written for people who need a dependable result, not a collection of repeated search phrases.