What you need
Choose one supported still image. Very small images are not enlarged, which avoids inventing detail.
Image Tools / Local studio
Image Resizer
Resize images for social feeds, stories, thumbnails, and web layouts while preserving their aspect ratio.
Step 1 / Source
Choose one image
Drop your image here
Or browse for a JPEG, PNG, or WebP image that you own or are authorised to edit.
One file · up to 20 MB · maximum 50 megapixelsStep 2 / Output
Set the maximum canvas
The complete image fits inside your chosen dimensions and keeps its original proportions.
Aspect ratio preservedUse Image Cropper when you need an exact full-bleed social canvas instead of a proportional fit.
Keep this page open until the download begins.01Your images stay on your device
Processed in your browser. No image upload required.
02Working copy released
After download, the preview URL, decoded bitmap, canvas, and selected source reference are cleared.
03Your download remains
Nirmion cannot remove the finished file from your device or browser download history.
Workflow guide
Right-size one asset for publishing
Use familiar social dimensions without distorting faces, products, screenshots, or typography.Social-ready choices
Presets provide common planning dimensions; platform requirements can change, so check the destination before a campaign launch.
What you receive
A proportionally resized file with the suffix _nirmion_tools_resized downloads in the selected format.
Decision guide
Resize without stretching the story
A proportional resize changes pixel dimensions while keeping every part of the source visible. It is the safer choice for logos, screenshots, diagrams, and images where edge content matters.
The social presets are maximum boxes, not forced canvases. A landscape source placed in a square preset remains landscape, which prevents distortion but may leave the destination platform to add padding or crop later.
Where resizing fits
- Prepare a high-resolution photograph for a website content column.
- Reduce screenshot dimensions while preserving the complete interface.
- Create a smaller logo or graphic without cutting off edge details.
Good to know
Important image boundaries
- Why might a PNG not become smaller?
- PNG is lossless and browsers do not expose a quality control for it. Choose WebP or JPEG when reducing file size matters more than exact lossless pixels.
- Are animated images supported?
- No. The workspace accepts still JPEG, PNG, and WebP files. Re-encoding an animated source would otherwise keep only one frame.
- What does clearing the file mean?
- Because processing is local, there is no Nirmion server copy to delete. The tab releases its working references after success; your downloaded output remains on your device.