Website and background upload
Official websites, mall backends, CMS and form systems often have limitations. Batch compression can reduce upload failures, page slowdowns and bandwidth waste.
Batch image processing special topic
Batch upload pictures, online compression to reduce KB size
Upload multiple JPG, PNG, and WebP images at one time, unify compression volume, control quality and output format, and quickly reduce KB/MB size. It is suitable for batch processing of website uploads, e-commerce product images, official account images, registration materials, ID photos and album photos.
Batch upload picturesReduce KB sizeJPG/PNG/WebP
Before compression
After compression
Suitable for these scenarios
Which scenarios require batch compression of images?
E-commerce product map arrangement
There are a large number of product main pictures, detail pictures and evaluation pictures, and after unified compression, they are more suitable for batch uploading and material archiving.
Public account and social media matching pictures
When the size of tweets, friend circles and community pictures is too large, batch compression can reduce the waiting time for sending and opening.
Registration photos and information pictures
Examination registration, data submission, and resume attachments often limit the file size, and it is easier to control it within the specified KB range after compression.
Operation path
Complete multiple picture compression in three steps
- Select multiple pictures or directly drag and drop folders, which is suitable for processing the same batch of materials at one time.
- Set the compression quality, output format and whether to retain the original size, and control the balance between clarity and volume.
- Compare the volume and clarity before and after compression, focusing on text, faces, product edges and transparent areas.
- Download the compression result, and you can continue to do format conversion, cropping or private information cleaning later.
Recommended batch compression settings
- For the main image of the e-commerce, it is recommended to complete the white background, cropping and changing the background first, and then compress it uniformly.
- Do not over-compress ID photos and registration photos to avoid blurring text and facial details.
- Transparent PNG If you need to retain the transparent background, do not blindly convert to JPG.
- It is recommended to give priority to controlling the volume of the first screen image of the website, and the detail image can appropriately retain higher quality.
- The original image is already very small or has been repeatedly compressed out of date, and the benefits of continued compression are limited. Too low quality will significantly damage the details.
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Frequently asked questions
Batch image compression FAQ
Will batch compression result in significant loss of clarity?
The lower the compression quality setting, the smaller the volume but the more obvious the loss of detail. It is recommended to preview with medium quality first and then fine-tune it according to the purpose.
Which format should be chosen among JPG, PNG and WebP?
Photos are usually suitable for JPG or WebP; materials that require a transparent background are suitable for PNG or WebP that supports transparency.
Why do some pictures become larger after compression?
If the original image itself is already highly compressed, recoding may not allow further reduction. You can lower the quality or change the format and try again.
How to choose between batch compression and single compression?
Single compression can be used to temporarily process a picture; when e-commerce new releases, website materials or a batch of registration materials require unified parameters, batch compression is more suitable.
How to compress an image to less than a specified KB?
You can first reduce the quality parameters, and if it is still too large, then appropriately reduce the size or convert to WebP/JPG. Don’t convert directly to JPG when you need to keep a transparent background.
Does batch compression change image dimensions?
Depends on the setup. Adjusting only the quality usually does not change the width and height. If you need to unify the size, you can first use the batch size resize tool.