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PHP adds watermark function class to pictures (applicable to pngjpggif format)

Picture library

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PHP adds watermark function class to pictures (applicable to pngjpggif format) Introducing a php function class to add watermarks to pictures (applicable to pngjpggif format),

1: Top left, 2: Top right, 3: Center, 4: Bottom left, 5: Bottom right 

Transparency -- 0: completely transparent, 100: completely opaque

Success -- New image address after watermarking

 Failure--1: The original file does not exist, -2: The watermark image does not exist, -3: The creation of the original file image object failed -4: The creation of the watermark file image object failed -5: Add Failed to save new image after watermark

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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.