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Image Resizer
Resize by pixels or percentage with optional ratio locking.
Local processing. Application guards: 15 MiB, 16 megapixels and 16,384 pixels per side. Animated images and SVG are unsupported.
Last reviewed: · Testing methodology
Use this in a task
Choose a task to see when this tool helps and which steps you can skip.
Choose a Document Task →How to use
Set exact pixel dimensions or a percentage. Ratio locking updates the other dimension; unlocked dimensions may stretch the image.
Set options
Select pixels or percentage and choose ratio locking.
Use the result
Resize, inspect dimensions and download.
Examples and checks
Worked example
Use the settings below and inspect the saved result.
- Input
- 320 × 200 image at 50%
- Output
- 160 × 100 output image
Limits and questions
Inputs are processed in your browser. Analytics and advertising can make separate network requests.
Supported behavior
Set exact pixel dimensions or a percentage. Ratio locking updates the other dimension; unlocked dimensions may stretch the image.
Limits and review
15 MiB input; output within 16 megapixels and 16,384 pixels per side. Upscaling cannot restore detail. Export omits original metadata.
Verification
Review record: 2026-08-26. See the documented behavior and limitations above, and the testing standards for the scope of review.
Testing methodologyWhen to use another workflow
Use a desktop editor or CLI for batch resizing, sharpening, metadata preservation, color management, and repeatable presets.
Frequently asked questions
- What are the limits?
- 15 MiB input; output within 16 megapixels and 16,384 pixels per side.
- What should I check before using the output?
- Upscaling cannot restore detail. Export omits original metadata.