<?php
namespace ImageOptimizer\TypeGuesser;
class ExtensionTypeGuesser implements TypeGuesser
public function guess($filepath)
{
$ext = strtolower(pathinfo($filepath, PATHINFO_EXTENSION));
switch($ext) {
case 'png':
return self::TYPE_PNG;
case 'gif':
return self::TYPE_GIF;
case 'jpg':
case 'jpeg':
return self::TYPE_JPEG;
default:
return self::TYPE_UNKNOWN;
}
}
}Manipulate images: remove unnecessary colors, pixels, etc., for example, change the image from large to small. The requirement for web images is to publish images of the highest possible quality in the shortest possible transmission time. Therefore, when designing and processing web page images, it is required that the images have the highest possible resolution and the smallest possible size, so that the download speed of the images can be the fastest. To do this, the image must be optimized.
All resources on this site are contributed by netizens or reprinted by major download sites. Please check the integrity of the software yourself! All resources on this site are for learning reference only. Please do not use them for commercial purposes. Otherwise, you will be responsible for all consequences! If there is any infringement, please contact us to delete it. Contact information: admin@php.cn
Tutorial on inserting pictures into specific cells in Excel using openpyxl
27 Nov 2025
This article details how to insert a picture into a specific cell of an Excel worksheet using Python's openpyxl library. The tutorial covers the key steps of loading an image, anchoring it to a specific cell, and automatically adjusting the row height and column width of the cell based on the image size. Through these methods, you can achieve the effect of the picture being perfectly visually adapted and "embedded" into the specified cell, instead of just being a floating object.
How to open the Google Chrome video window_Google Chrome picture-in-picture setting tutorial
16 Mar 2026
There are five ways to enable video picture-in-picture in Chrome: 1. Right-click the video and select "Picture-in-Picture"; 2. Click the Picture-in-Picture button in the media control icon in the address bar; 3. Press Ctrl Shift P (Win/Linux) or Cmd Shift P (macOS) after focusing on the video; 4. Execute the requestPictureInPicture() command in the developer tool Console; 5. Enable the AutoPicture-in-Picture experimental function in chrome://flags.
How to open the small video window in Edge browser_Edge browser picture-in-picture setting tutorial
18 Mar 2026
There are five ways to enable the Picture-in-Picture function in the Edge browser: 1. Right-click the video and select "Play in Picture-in-Picture"; 2. Press Ctrl Shift P after focusing on the video; 3. Enable the Picture-in-Picture experimental function in edge://flags and restart; 4. Add the website whitelist in edge://settings/content/pictureInPicture; 5. Execute the requestPictureInPicture() command through the developer tool Console to force the call.
How to clear the selected files in the file input box when the user selects a preset image
20 Mar 2026
This article introduces how to implement "picture selection mutually exclusive logic" in a form: when the user clicks a picture from the preset picture list, the selected local file is automatically cleared; conversely, when the user uploads a new picture through the file input box, the value of the preset picture text box is automatically cleared. The core is to correctly reset the value attribute of the file input.
How to use Picture-in-Picture mode in Firefox? (Video Multitasking)
25 Dec 2025
TousePicture-in-PictureinFirefoxonmacOS:1)Right-clickaplayingvideoandselect“Picture-in-Picture”;2)PressCmd Shift ]whilefocusedonthevideo;3)UseDeveloperTools’InspectortotogglePiPontheelement;or4)Dragadraggablevideothumbnailoutsidethebrowserwindow.
How to use Picture-in-Picture mode in Chrome? (Simple guide)
08 Jan 2026
TousePicture-in-PictureinChromeonmacOS:enablechrome://flags/#enable-picture-in-picture,relaunchChrome,thenclickthePiPbutton,right-click→“PictureinPicture”,oruseCommand Shift I.Forblockedsites,editthetaginDevToolsorinstallthe“PiPToggle”extension.
Popular tool
PHP multifunctional image processing class
PHP multifunctional image processing class
PHP library for creating animated GIFs
PHP library for creating animated GIFs