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Proportional resize and exact canvas
Resize by percentage, width, height or bounds. Fixed canvas offers padding, center crop or stretch.
Batch image resizer
Resize images and adjust output ratios in batches.
Using this tool
Select your own local files, check the supported formats and processing options, then review and download the result in the browser.
Your tool inputs and processing results are not published as part of this page. Review the tool instructions before entering sensitive information.
One batch, ready in the sizes you need
Standardize image sizes and formats locally. Four proportional modes preserve content; fixed canvas suits placements and product images.
Features
Format, transparency and background
Export PNG / JPG / WebP, adjust lossy quality, keep alpha or fill the background.
Local preview and batch delivery
Inspect original and target layouts per image. Download results individually or as ZIP, with per-file errors.
How to use
Choose, drop or paste images; check source dimensions and file errors in the queue.
Choose a mode or template, enter values and check each image’s target dimensions.
Choose output format, background and quality; switch previews to inspect the layout.
Resize the batch, then download individually or as ZIP. Regenerate after changing settings.
Limits & processing
Up to 50 files, 20 MB each, 100 MB of sources. Input and output are limited to 16 MP and 8192px per side. Outputs: 32 MB each, 150 MB total. Serial processing controls memory; cancellation keeps completed results.
All results are re-encoded as static images without animation or source metadata. PNG has no lossy quality slider. Resizing and JPG / WebP compression may alter detail; upscaling cannot restore missing detail.
Use cases
Product details: use fixed width for consistent layout while keeping each aspect ratio.
Social and ad creatives: generate fixed square, vertical or landscape canvases.
Website images: set maximum bounds without upscaling to reduce large images and retain small ones.
FAQ
Why does output differ from my width and height?
Proportional modes calculate the other side from the source ratio; bounds are maximums. Use fixed canvas when both dimensions must match exactly.
How do padding and cropping differ?
Contain keeps all content and adds transparent or filled padding. Cover fills the canvas and removes edges. Stretch changes proportions.
Does keeping the source format preserve the file?
No. Images are redrawn and re-encoded, so size, compression detail and metadata may change. Only PNG, JPG or WebP format type is retained.
Can I download after errors or cancellation?
Completed images can be downloaded individually or as ZIP. Failed and unfinished items are excluded. Settings changes clear old results to avoid mixed configurations.
Using this tool
Select your own local files, check the supported formats and processing options, then review and download the result in the browser.
Your tool inputs and processing results are not published as part of this page. Review the tool instructions before entering sensitive information.
Read the free tools workflow guide ↗