01
JPG, PNGGo to uploadPick imageUpload
图片改尺寸
按宽度调整图片
按宽度
按宽度JPG, PNG, WEBP
02
按宽度Go to uploadGet resultUpload, then save
01Pick image
UploadStart with one image
02Get result
Result workspaceSee the result here as you work.
Pending
Preparing resultWorking
Set values to prepare the result
Waiting for file1200 × - · JPG
Save nowCheck after upload
Adjust options
Choose taskResize basis
Pick the resize basis
Width-first
Width-first setupSet only the width.
Direct pixel setupWidth controls height
Set optionsSave setup
Set size and format
AdvancedAdjust only when neededOpen
Width autoKeeps the right proportion
图片改尺寸
按宽度调整图片
按宽度
按宽度JPG, PNG, WEBP
Last updated2026-04-09
StabilityStable
Request tags linked to this page
01Pick image
UploadStart with one image
02Get result
Result workspaceSee the result here as you work.
Pending
Preparing resultWorking
Set values to prepare the result
Waiting for file1200 × - · JPG
Save nowCheck after upload
Adjust options
Choose taskResize basis
Pick the resize basis
Width-first
Width-first setupSet only the width.
Direct pixel setupWidth controls height
Set optionsSave setup
Set size and format
AdvancedAdjust only when neededOpen
Width autoKeeps the right proportion
Quick note about this tool
The tool name and page path are sent automatically.
按宽度调整图片What this tool is for
按宽度调整图片 accepts JPG, PNG, WEBP files, works in your browser, and prepares JPG, PNG, WEBP output. 在浏览器里只按宽度调整图片，高度会自动计算，方便保持原始比例。
The uploaded file is processed in the browser and only the resulting download is prepared.
在浏览器里只按宽度调整图片，高度会自动计算，方便保持原始比例。
适合这些场景
JPG, PNG, WEBP
需要固定宽度预设时。
只想改宽度，不想手动算高度时。
Frequently asked questions
These short answers help search visitors confirm the tool fit without leaving the page.
按宽度调整图片能做什么？
适合你已经知道目标宽度，只想保持原图比例的时候。
什么时候适合用 按宽度调整图片？
需要固定宽度预设时。