Customer understanding cost is the cognitive effort users must expend to acquire information. On a corporate website, if images are named arbitrarily, lack contextual explanation, load slowly, or are disconnected from the page theme, customers need extra time to guess "what this image is trying to convey," inadvertently increasing understanding costs. So, how should image resources be written—i.e., designed, named, paired, and displayed—to truly help customers quickly grasp the message? Below are specific approaches from five key aspects.
1. Use Human-Readable Names for Image Files, Not Machine Codes
Many websites directly upload files from cameras (e.g., IMG_20240301_1234.jpg or photo_1.png). Such naming is meaningless for both search engines and customers. When customers see file names in browser tabs or developer tools, they cannot determine the image content. Recommendations:
- Use short descriptive words in English or pinyin to describe the image subject, e.g., "homepage-banner-charity.jpg" or "product-intro-img01.jpg".
- Avoid pure numbers, dates, or meaningless letter combinations.
- For multilingual websites, use English words to maintain universality.
Although customers rarely see file names directly, search engines read them, and search results are a key entry point for customers to understand page content. Clear file names indirectly reduce the difficulty customers face in discovering and understanding images.
2. Write ALT Tags as a One-Sentence Description, Not Keyword Stacks
ALT tags are alternative text for images. When an image fails to load or a customer uses a screen reader, the ALT text is displayed directly. Many corporate websites write ALT tags as a string of keywords (e.g., "company, product, service, case"), leaving customers still unsure of the image's specific content. The correct approach:
- Summarize the core information of the image in one sentence, e.g., "A team from Company X discussing a plan in a meeting room" is clearer than "team discussion."
- If the image contains text or data, include key numbers or conclusions in the ALT text.
- Do not repeat the page title or article title in the ALT text, as customers already know the page topic.
Good ALT tags help customers understand context even when they cannot see the image, especially beneficial for mobile users with slow or weak network connections.
3. Layout Images with a Reading Logic to Avoid Information Overload
Customers understand images through a process of "glance → locate key points → combine with text." If the image layout is complex, elements are crowded, or annotations are messy, customers need to repeatedly confirm. Principles to reduce understanding costs:
- Sufficient whitespace: Leave appropriate blank space around the image edges and between internal elements to give customers' eyes a resting area.
- Highlight key points: For flowcharts or comparison charts, use colors, bold text, or arrows to mark critical paths.
- Use animations or carousels sparingly: Auto-playing GIFs or carousels can cause customers to miss details before switching, interrupting understanding. If necessary, add manual controls or longer dwell times.
Additionally, image dimensions and proportions should adapt to different devices to avoid cropping or distortion on mobile screens, which would force customers to zoom in and multiply understanding costs.
4. Image Loading Speed Directly Affects Understanding Continuity
Customer understanding is a continuous process. If page text appears but images are delayed, customers experience "waiting anxiety," potentially skipping images to read on, rendering the image information ineffective. Methods to optimize loading speed:
- Compress image file sizes while maintaining visual quality. Generally, use JPG for photos and PNG for icons or screenshots.
- Use responsive image tags to load different image sizes based on screen width.
- Enable lazy loading but include placeholder images or background colors to avoid large blank areas.
Every second of slower loading can reduce customer patience and understanding efficiency by over 10%. This is an often-overlooked factor that significantly impacts understanding costs.
5. Images and Text Should Complement Each Other, Not Repeat
Many corporate websites have images and corresponding text that are highly repetitive. For example, text says "Our team is professional," and next to it is a team photo with no additional information. Customers feel no gain after reading both, wasting time. Better practices let images provide information beyond the text:
- If text introduces product features, images can show usage scenarios or operation steps.
- If text presents data conclusions, images can use charts or infographics to show trends and comparisons.
- If text describes company strengths, images can display office environments, collaboration sites, or patent certificates (with privacy and compliance considerations).
When customers gain content from images that text cannot directly express, understanding costs truly decrease. Conversely, if images are merely decorative, customers must judge whether they are worth viewing, adding cognitive burden.
Summary
The core of reducing customer understanding costs is to make images "speak for themselves"—quickly, accurately, and effortlessly. From file naming to ALT tags, from layout logic to loading speed, and to the division of labor with text, every aspect can be optimized. When updating image resources, corporate websites can check against these five aspects one by one, significantly improving customer browsing experience. If uncertain about specific execution methods for any aspect, further adjustments can be made based on industry characteristics, with the ultimate goal of enabling customers to quickly understand upon opening a page without repeated guessing.
