How to enlarge photos: hot topics and practical tips on the Internet
Recently, with the popularity of social media and digital photography, how to enlarge photos and maintain clarity has become a hot topic. The following is a summary of relevant content and practical methods that have been hotly discussed on the Internet in the past 10 days to help you quickly master photo enlargement techniques.
1. Inventory of hot topics on the Internet in the past 10 days

| Ranking | Topic keywords | Discussion popularity | Main platform |
|---|---|---|---|
| 1 | AI picture enlargement | 985,000 | Weibo, Zhihu |
| 2 | Old photo restoration | 762,000 | Douyin, Bilibili |
| 3 | Online magnification tool | 547,000 | Baidu, Xiaohongshu |
| 4 | Photoshop skills | 423,000 | WeChat, Douban |
2. Four mainstream methods of photo enlargement
1. AI intelligent amplification technology
Replenish pixel details through deep learning algorithms, allowing up to 8x magnification. Popular tools include:
| Tool name | magnification | Supported formats |
|---|---|---|
| Topaz Gigapixel AI | 6 times | JPG/PNG/TIFF |
| Waifu2x | 2 times | PNG/JPG |
2. Traditional software interpolation method
Use the "Image Size" function of software such as Photoshop:
| interpolation algorithm | Applicable scenarios | Maximum multiple |
|---|---|---|
| double triple | Normal photo | 3 times |
| Preserve Details 2.0 | Portrait close-up | 4 times |
3. Free online tools
Comparison of three popular online tools recently:
| website | maximum resolution | processing speed |
|---|---|---|
| Bigjpg.com | 16K | medium |
| imgupscaler.com | 8K | fast |
4. Mobile APP solution
The two highest-rated apps on Android/iOS platforms:
| Application name | Rating | Features |
|---|---|---|
| PhotoEnhancer AI | 4.8 | Batch processing |
| Remini | 4.7 | Portrait optimization |
3. Detailed explanation of operation steps (taking Photoshop as an example)
1. Open the image → select "Image size" (shortcut key Ctrl+Alt+I)
2. Uncheck "Resample"
3. Enter the target size (it is recommended not to exceed 300% of the original image)
4. Select the "Preserve Details 2.0" algorithm
5. Use the "Smart Sharpen" filter to fine-tune
4. Precautions
• It is not recommended to enlarge photos with an original resolution lower than 800×600 more than 2 times
• Portrait photos need to be repaired with skin texture
• It is recommended to back up the original files of important photos first
• Please pay attention to copyright issues for commercial use
With the above methods and tools, you can easily handle various photo enlargement needs. According to actual tests, AI tools are particularly effective when enlarging old photos, while professional software is more suitable for fine adjustments. It is recommended to choose the most suitable solution based on specific needs.
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