Set width and height, with optional aspect-ratio lock.
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ONE FILE. MORE POSSIBILITIES.v1.1
Resize image
Set width and height, with optional aspect-ratio lock.
How it works
Open an image
Enter width and height; keep aspect ratio when appropriate
Resize, check dimensions and download
Supported formats
PNG / JPG / WebP / AVIF / HEIC → PNG — Input decoding and output encoding depend on browser support. Animated images are treated as still images.
What this tool does
Sets exact output dimensions for thumbnails and size-constrained forms.
Before you export
Changing the aspect ratio can stretch the picture. Maximum output is 8192 per side and 16 million pixels.
Frequently asked questions
Why does the height change when I type a width?
The aspect-ratio lock keeps the proportions of the source image. Turn it off only for deliberate stretching.
Are my files uploaded?
FileForge processes selected files on your device and has no file-upload API. Optional engines and models are downloaded from third parties; those requests expose connection information such as your IP address.
Will my work be saved automatically?
No. Files and editing results stay in this tab’s memory. Changing language preserves your work; reloading, closing the tab, or following a link to another page can clear it.