Placeholder Image Generator

📖 Tool Introduction

The Placeholder Image Generator is a free online tool that is genuinely useful during design and front-end development. While a web page or a design mockup is still being laid out and the real images are not ready yet, you usually need a grey placeholder marked with its size to hold the space and stop the layout from collapsing. This tool lets you type in a width and height in pixels, pick a background colour and a text colour, and enter the label you want to show — or leave it blank to display width by height automatically — and the canvas draws the image at the exact resolution you asked for, locally in your browser, so you can preview it instantly and download a lossless PNG in one click. The font size scales automatically with the shortest edge of the image, keeping the text crisp and centred anywhere from 1 by 1 up to 2000 by 2000. Whether you are reserving a slot for an article image, holding a frame for a slide, or annotating a block size in a wireframe, you get the result in seconds. The whole process relies on no remote placeholder service, the image is never uploaded, and both privacy and offline availability are protected. The interface ships in Simplified Chinese, Traditional Chinese and English and works on phone and desktop alike. Because the canvas renders at the exact pixel dimensions you type, the downloaded PNG matches the slot in your layout one to one, so there is no awkward resizing step when you move the file from this tool into your design file or wireframe. You can also use a darker base with light lettering or a light base with grey lettering to match the surrounding design system, and the automatic centring keeps the label balanced whether the block is a thin banner or a near-square panel.

✨ Key Features

• True-resolution drawing: the canvas renders at the exact width and height you enter, exported as real pixels
• Freely paired colours: background and text colours picked independently, contrast visible at once
• Custom label: annotate the block purpose, or leave blank to show width by height
• Automatic font size: text scales with the shortest edge to stay crisp and centred
• Lossless PNG download: export in one click, ready to drop into a design file or web page
• Fully local: drawn and exported on your browser canvas with no upload of any image

📝 How to Use

1. Enter the width and height in pixels (range 1 to 2000)
2. Use the colour pickers to choose the background and text colours
3. Type the label you want in the text field, or leave it blank to show width by height
4. Click generate placeholder and check the result in the preview on the right
5. Click download PNG and save it locally for use

⚠️ Notes

• Size range: width and height are limited between 1 and 2000 pixels; out-of-range input gives a hint
• Text rendering: the label is drawn safely on the canvas, so special characters never break it
• Export format: PNG is fixed for crisp, lossless edges
• Preview scaling: the preview shrinks large images proportionally; the download is the true resolution
• Fully local: the image is drawn and exported in the browser with no network request at all