Help:Images
- Help:Images
This page provides a comprehensive guide to using images within your wiki pages. Images can significantly enhance the visual appeal and clarity of your content. This guide covers uploading, inserting, sizing, aligning, and more advanced techniques for working with images in MediaWiki. It is aimed at users with little to no prior experience.
Uploading Images
Before you can use an image on a page, you need to upload it to the wiki. This is done through the "Upload file" page, usually accessible via the "Upload file" link in the toolbox on the left-hand sidebar (or via Special:Upload).
1. **Access the Upload Page:** Click the "Upload file" link. 2. **File Name:** Enter a descriptive name for your image in the "Destination filename" field. Avoid spaces and special characters; use underscores (_) or hyphens (-) instead. For example, `Fibonacci_Retracement.png` is a good filename. 3. **File Source:** Click the "Browse..." button to locate the image file on your computer. 4. **Summary:** Provide a brief description of the image in the "Summary" field. This helps other users understand the image's purpose. Include information about the source if applicable (e.g., "Chart created using TradingView"). Consider adding copyright information. 5. **License:** Select the appropriate license from the "Licensing" section. Choose a license that reflects the image's copyright status. Common options include:
* **Public domain:** The image is not protected by copyright. * **Creative Commons licenses:** These allow others to use your image under certain conditions, such as attribution. Help:Licensing provides more details. * **Fair use:** This allows limited use of copyrighted material for specific purposes, such as criticism or education. Fair use is complex and should be used cautiously.
6. **Ignore Upload Warning:** If the file type is one that is discouraged (e.g., BMP), you may see a warning. If you are certain the file is necessary, you can check the "Ignore upload warning" box. 7. **Upload:** Click the "Upload file" button. If the upload is successful, you will be redirected to the image description page.
Inserting Images
Once an image is uploaded, you can insert it into a wiki page using the following syntax:
```wiki
```
Let's break down this syntax:
- `[[File:`: This indicates that you are inserting a file.
- `Fibonacci_Retracement.png`: This is the filename of the image you uploaded. Ensure the filename is correct, including the extension (e.g., `.png`, `.jpg`, `.gif`).
- `|thumb`: This creates a thumbnail version of the image. Thumbnails are generally preferred for inline images.
- `|right`: This aligns the image to the right side of the page. Other options include `left`, `center`, and `none` (for no alignment).
- `|200px`: This sets the width of the thumbnail to 200 pixels. You can also specify the height using `x200px`. Using `px` is crucial for specifying pixel dimensions.
- `|A Fibonacci retracement chart showing key levels.` : This is the caption for the image. It appears below the image and provides context.
Image Options and Parameters
MediaWiki offers a variety of options for controlling the appearance and behavior of images. Here's a more detailed look:
- **`thumb` vs. `frame`:** `thumb` creates a thumbnail with a border. `frame` creates a framed image, often used for larger images or those that need more emphasis.
- **`link=`:** By default, clicking on an image will take you to the image description page. You can change this behavior using the `link=` parameter. For example, `link=https://www.tradingview.com` will make the image link to TradingView. `link=` can also be set to `none` to disable linking altogether.
- **`alt=`:** The `alt` attribute provides alternative text for the image. This text is displayed if the image cannot be loaded and is also used by screen readers for accessibility. For example, `alt=Fibonacci Retracement Levels`. Always provide meaningful alt text.
- **`class=`:** Allows you to apply CSS classes to the image for custom styling. This requires knowledge of CSS.
- **`border=`:** Specifies the border width in pixels.
- **`baseline=`:** Adjusts the vertical alignment of the image relative to the surrounding text.
Image Formats
MediaWiki supports a wide range of image formats, including:
- **PNG (.png):** A lossless format that is ideal for images with sharp lines and text.
- **JPEG (.jpg, .jpeg):** A lossy format that is suitable for photographs and images with complex colors. JPEG compression can reduce file size, but it can also result in image quality loss.
- **GIF (.gif):** A lossless format that supports animation.
- **SVG (.svg):** A vector format that is scalable without loss of quality. SVG is ideal for logos and illustrations. Help:SVG explains SVG support in detail.
- **WebP (.webp):** Modern image format developed by Google, offering superior lossless and lossy compression for images on the web.
Choosing the right format depends on the type of image and your desired balance between file size and image quality.
Advanced Techniques
- **Gallery View:** You can create a gallery of images using the `
-
-
-
Bullish Engulfing
-
Hammer
-
Doji
```
This will display the images in a grid-like arrangement with captions.
- **Floating Images:** You can float images to the left or right of text using the `float` CSS property. This requires using the `class` parameter and defining a CSS rule.
- **Image Maps:** Image maps allow you to create clickable areas within an image. This is a more advanced technique that requires knowledge of HTML and SVG.
- **Using Images in Templates:** Images can be used within templates to create reusable content blocks. Help:Templates provides more information.
Best Practices
- **File Size:** Keep image file sizes as small as possible without sacrificing too much quality. Large images can slow down page load times. Optimize images before uploading them. Tools like TinyPNG ([1]) can help.
- **Resolution:** Use appropriate image resolution. High-resolution images are not always necessary for web display.
- **Copyright:** Respect copyright laws. Only upload images that you have the right to use. Properly attribute images when required.
- **Accessibility:** Provide meaningful alt text for all images. This makes your content accessible to users with disabilities.
- **Descriptive Filenames:** Use descriptive filenames that accurately reflect the image's content.
- **Captions:** Always provide captions for images to provide context and explanation.
- **Consider Vector Graphics:** When possible, use SVG for logos and illustrations because they scale without loss of quality.
Troubleshooting
- **Image Not Showing Up:**
* **Filename:** Double-check that the filename is correct, including the extension. * **Upload:** Ensure the image was uploaded successfully. * **Cache:** Clear your browser cache. * **Syntax:** Verify that the image syntax is correct.
- **Image Too Large:**
* **Thumbnail:** Use the `thumb` parameter to create a thumbnail. * **Resize:** Resize the image before uploading it.
- **Image Alignment Issues:**
* **`right`, `left`, `center`:** Double-check the alignment parameter. * **CSS:** If you are using custom CSS, ensure it is not interfering with the image alignment.
Further Resources
- Help:Contents – The main help page for MediaWiki.
- Help:Images/Syntax – Detailed syntax guide for images.
- Help:File pages – Information about image description pages.
- Help:Licensing — Understanding licensing options for uploaded files.
- Special:Upload – The upload file page.
- **Technical Analysis Resources:**
* [Investopedia](https://www.investopedia.com/): Comprehensive financial definitions and explanations. * [TradingView](https://www.tradingview.com/): Charting platform and social network for traders. * [StockCharts.com](https://stockcharts.com/): Charting and analysis tools.
- **Trading Strategies:**
* [Babypips](https://www.babypips.com/): Forex trading education. * [DailyFX](https://www.dailyfx.com/): Forex news and analysis. * [EarnForex](https://www.earnforex.com/): Strategies and tutorials.
- **Indicators:**
* [MACD Explained](https://www.investopedia.com/terms/m/macd.asp) * [RSI Explained](https://www.investopedia.com/terms/r/rsi.asp) * [Bollinger Bands Explained](https://www.investopedia.com/terms/b/bollingerbands.asp) * [Fibonacci Retracement Explained](https://www.investopedia.com/terms/f/fibonacciretracement.asp)
- **Trend Analysis:**
* [Trend Following](https://www.investopedia.com/terms/t/trendfollowing.asp) * [Support and Resistance](https://www.investopedia.com/terms/s/supportandresistance.asp) * [Moving Averages](https://www.investopedia.com/terms/m/movingaverage.asp) * [Chart Patterns](https://www.investopedia.com/terms/c/chartpattern.asp)
- **Risk Management:**
* [Position Sizing](https://www.investopedia.com/terms/p/position-sizing.asp) * [Stop-Loss Orders](https://www.investopedia.com/terms/s/stop-lossorder.asp) * [Take-Profit Orders](https://www.investopedia.com/terms/t/takeprofitorder.asp)
- **Volatility Indicators:**
* [ATR (Average True Range)](https://www.investopedia.com/terms/a/atr.asp) * [VIX (Volatility Index)](https://www.investopedia.com/terms/v/vix.asp)
- **Candlestick Patterns:**
* [Doji Candlestick](https://www.investopedia.com/terms/d/doji.asp) * [Hammer Candlestick](https://www.investopedia.com/terms/h/hammer.asp) * [Engulfing Pattern](https://www.investopedia.com/terms/e/engulfingpattern.asp)
- **Elliott Wave Theory:** [2]
- **Ichimoku Cloud:** [3]
- **Harmonic Patterns:** [4]
- **Volume Spread Analysis:** [5]
- **Point and Figure Charting:** [6]
- **Renko Charting:** [7]
- **Kagi Charting:** [8]
Help:Contents Help:Editing Special:Upload Help:File pages Help:Templates Help:Licensing Help:SVG Manual:Configuration settings Manual:Extension:SyntaxHighlightGeSHi Manual:Configuration settings#File handling
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