Image Resizer
PDF Vault resizes and optimises images in your browser, with no upload to an image-processing service.
Image resizing sits alongside PDF work constantly: shrinking a scan before it goes into a document, hitting an upload dimension limit on a form, or cutting a photo down so an email will actually send.
This tool resizes and re-encodes locally. Given how often the images people resize are ID photos, signatures, and document scans, doing it without an upload is the sensible default.
How to resize an image without uploading it
- Load the image you want to resize.
- Enter the target dimensions, keeping the aspect ratio locked unless you need to distort it.
- Adjust quality to balance file size against fidelity.
- Export the resized image.
What you get
- Exact dimensions. Set the pixel size a form or template demands.
- Aspect ratio lock. Avoid accidentally stretching a photo.
- Three output formats. Export as JPG, PNG, or WebP, with a quality slider for the two lossy formats.
- Local processing. ID photos and document scans never leave your device.
Frequently asked questions
Will resizing reduce the quality?
Making an image smaller generally looks fine. Enlarging beyond the original resolution cannot invent detail and will look soft.
Which formats are supported?
JPG, PNG, and WebP for output, chosen from a dropdown before you export — between them that covers nearly everything produced by cameras, phones, and screenshots, plus WebP if your destination supports the smaller file size.
Can I resize an image to a specific file size?
Adjust the dimensions and quality and check the resulting size — a couple of passes usually lands on the limit you need.