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How to enlarge a photo

2025-11-30 16:38:28 science and technology

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

How to enlarge a photo

RankingTopic keywordsDiscussion popularityMain platform
1AI picture enlargement985,000Weibo, Zhihu
2Old photo restoration762,000Douyin, Bilibili
3Online magnification tool547,000Baidu, Xiaohongshu
4Photoshop skills423,000WeChat, 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 namemagnificationSupported formats
Topaz Gigapixel AI6 timesJPG/PNG/TIFF
Waifu2x2 timesPNG/JPG

2. Traditional software interpolation method

Use the "Image Size" function of software such as Photoshop:

interpolation algorithmApplicable scenariosMaximum multiple
double tripleNormal photo3 times
Preserve Details 2.0Portrait close-up4 times

3. Free online tools

Comparison of three popular online tools recently:

websitemaximum resolutionprocessing speed
Bigjpg.com16Kmedium
imgupscaler.com8Kfast

4. Mobile APP solution

The two highest-rated apps on Android/iOS platforms:

Application nameRatingFeatures
PhotoEnhancer AI4.8Batch processing
Remini4.7Portrait 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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