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Course Introduction：Update 18/11/2012: The new version of this upload is now here JQUERY AJAX IMAGE UPLOAD THUMBNAIL EXAMPLE. This is how you can add a file/image upload tool to your forms and have AJAX store the file with PHP and return a thumbnailed version to the us

2025-03-04 comment 0  1135

Course Introduction：This article demonstrates how to upload images using Ajax and display a thumbnail preview without page reloads. The process involves client-side JavaScript for handling the upload and a PHP backend for thumbnail generation and image storage. Client

2025-02-24 comment 0  525

Course Introduction：Extracting YouTube Video Thumbnails Using PHP and cURLIf you possess a YouTube video URL, you may wish to retrieve its associated thumbnail image...

2024-12-24 comment 0  563

Course Introduction：Effectively managing massive images requires CDN or cloud storage to improve performance and scalability; 2. Optimize file structure through reasonable naming rules and directory storage; 3. Use PHP to automatically compress and convert it into efficient formats such as WebP to reduce volume; 4. Combine front-end responsive images and lazy loading technology to improve loading speed; 5. Realize signature URL anti-theft chain and upload security verification to prevent malicious files, thereby building a safe and efficient picture system to support commercial monetization.

2025-07-25 comment 0  656

Course Introduction：Use Pillow to adjust the image size to select methods based on whether the aspect ratio is maintained: 1. Direct resize() will stretch the image, which is suitable for scenes where proportions are not required; 2. Use thumbnail() to automatically maintain the aspect ratio, generate undistorted thumbnails, and the maximum size does not exceed the specified value; 3. Custom resize_with_aspect_ratio() function can flexibly control the target width and height, and improve quality by calculating the scaling ratio and using LANCZOS resampling; 4. Pay attention to the image mode during processing, and convert it to RGB if necessary to avoid saving errors; 5. It is recommended to use thumbnail() or custom functions to maintain the image proportions, avoid deformation, and finally save or display the results.

2025-07-26 comment 0  183

Course Elementary  21692

Course Introduction："File and Image Technology" mainly introduces the use of PHP to process files and upload images.

Course Elementary  13880

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82435

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13230

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24687

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.