The photos from your phone or camera are too dark? Or the brightness of images saved online isn't sufficient? These are common brightness issues we encounter with JPG, PNG, and other image formats. Processing them one by one might be manageable, but when faced with a hundred or even a thousand images that need brightness enhancement, manually adjusting each one — not to mention the visual fatigue it causes — could mean spending half the day just handling a hundred or so images. So, is there a way to help us directly increase the brightness of all images in a folder at once?
This article introduces three practical little methods! From built-in computer tools to professional software and online solutions, there's something for everyone—all helping us quickly batch adjust the brightness of images, multiplying our efficiency and rescuing dark, dull JPG, PNG image or photo files!
When should you increase the brightness of JPG, PNG, and other image files?
Photos taken that are too dark
Many people take photos with their phones or cameras at night or in low indoor light, and the resulting images appear dark with blurred details. Modifying each one individually is too cumbersome, so you can use batch brightness enhancement to make all the dark photos bright and clear in one go. This not only reveals facial expressions and background details clearly but also enhances the overall aesthetics of the photos.
Organizing old photos
After scanning old album photos, paper contracts, and archive files into JPG or PNG, the colors tend to be grayish and dark, lacking brightness, making them look yellowed and dim. Batch increasing brightness can bring these images back to life. Overall brightening can make text clearer and colors fuller, facilitating later identification and archiving.
Brightening product images
After creating product pictures, the original image may be clear but slightly dark, affecting the overall visual impact. Increasing the image brightness can make the product appear more textured, the background look more transparent, and the overall picture more harmonious.
Preview of the effect of batch adjusting the overall brightness of JPG, PNG, and other image formats
Before processing:
After processing:
Method 1: Use HeSoft Doc Batch Tool to batch increase the brightness of dark, dim images
Recommendation Index: ★★★★★
Advantages:
- Can batch adjust the brightness of a large number of images—hundreds or even thousands are no problem—and also supports adjusting image rotation angle, transparency, size, as well as contrast and sharpening.
- All images are processed locally, with no uploading involved, protecting user privacy and security.
Disadvantages:
- The software can only be installed and operated on a computer.
Operation Steps:
1. Open [ HeSoft Doc Batch Tool ], select [Image Tools] - [Image Effect Enhancement].
2. In [Add Files] or [Import Files from Folder], choose a method to add all the images that need brightness increased. You can also directly drag and drop images into the area below to import them, then click Next.
3. Enter the settings page, turn on the [Brightness] button, and drag below to adjust the overall brightness of all images. Here you can adjust according to the darkness level of the pictures. Finally, click Next, click Browse, and choose the save location for the brightened images.
4. After processing is complete, click the red path to open the folder and view the successfully brightness-adjusted image files.
Method 2: Use Windows' built-in image editor to adjust image brightness
Recommendation Index: ★★★☆☆
Advantages:
- A system built-in feature, no software installation required.
- Simple and intuitive operation, even a novice can learn it in three steps.
Disadvantages:
- Cannot perform batch processing; brightness can only be increased one image at a time.
- Adjustment options are limited, and there is a maximum limit for brightness settings.
Operation Steps:
1. Double-click to open the image, and click the edit button in the top left corner.
2. Find the brightness slider in the interface and drag it to the right to select a suitable brightness for the current image.
3. Then click Save a copy to complete the processing of that single image.
Method 3: Use Adobe online tools to set the brightness of JPG, PNG files
Recommendation Index: ★★★☆☆
Advantages:
- No tool installation needed; just open a browser to use it.
- Supports batch uploading and adjusting image files.
Disadvantages:
- Requires uploading images to a server, posing a privacy risk.
- Processing speed is affected by the current network environment; if there is no network, it cannot be used.
Operation Steps:
1. Go to the Adobe online image processing website, upload the images you want to brighten, then click Adjust.
2. Find the brightness option and drag it to the appropriate position.
3. Finally, save it.
