01Pick image
UploadStart with one image
画像 圧縮
画像 1 MB
1 MB前後に保存
1 MB前後に保存JPG, PNG, WEBP -> JPG
02Get result
Result workspaceSee the result here as you work.
Pending
Preparing resultWorking
Upload to prepare the compressed result
Waiting for fileJPG · 1000KB
Save nowCheck after upload
Adjust options
Choose taskCompression mode
Pick the compression mode
Target size
Compress near 1000KBAuto-fit near 1000KB
1000KBAuto-fit near target size
Set optionsCompression setup
Set quality and format
Target size 1000KBTarget size first
JPGOnly JPG output here.
AdvancedAdjust only when neededOpen
Info
JPG, PNG, WEBPJPG, PNG, WEBP -> JPGSupportedInput files
Next
Get result1 MB前後に保存Browser onlyNext stepUpload, then save
画像 圧縮
画像 1 MB
1 MB前後に保存
1 MB前後に保存JPG, PNG, WEBP -> JPG
Last updated2026-04-10
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
Upload to prepare the compressed result
Waiting for fileJPG · 1000KB
Save nowCheck after upload
Adjust options
Choose taskCompression mode
Pick the compression mode
Target size
Compress near 1000KBAuto-fit near 1000KB
1000KBAuto-fit near target size
Set optionsCompression setup
Set quality and format
Target size 1000KBTarget size first
JPGOnly JPG output here.
AdvancedAdjust only when neededOpen
Quick note about this tool
The feedback text, tool name, and page path may be stored for triage.
画像を1 MBに圧縮What this tool is for
画像を1 MBに圧縮 accepts JPG, PNG, WEBP files, works in your browser, and prepares JPG output. 画像をブラウザ内で1 MB前後に圧縮し、アップロード制限に合わせやすくします。
The uploaded file is processed in the browser and only the resulting download is prepared.
Files and tool inputs are processed in your browser and are not kept in default file storage.
Visitor analytics may count page views, searches, and download events through Plausible or first-party events, and may use a localStorage visitor ID to reduce duplicate counts.
When you submit feedback, the feedback text, tool name, and page path may be stored so the issue can be triaged and followed up.
画像をブラウザ内で1 MB前後に圧縮し、アップロード制限に合わせやすくします。
合うケース
JPG, PNG, WEBP -> JPG
1 MB前後の画像が必要なフォームに出したいとき。
アップロード前にファイルをすばやく軽くしたいとき。
Frequently asked questions
These short answers help search visitors confirm the tool fit without leaving the page.
結果はちょうど1 MBになりますか？
目標はその容量に近づけることです。元画像によっては少し前後します。
1 MB 制限のフォームにも使えますか？
はい。1 MB前後まで素早く軽くしたいときに向いています。