Image Resizer
Set pixel dimensions for thumbnails, social crops, and layout slots in your browser. Conversion files are not uploaded to Format Convertly servers.
Choose a file or drag and drop
Drop an image to resize or
Choose file · Drag & drop · Public file link
- Processed on your device
- No conversion file stored on our servers
- Maximum file size: 100 MB
No server upload — resizing happens in your browser.
Conversion Settings
Customize the output to match your needs.
Convert Quality
92%Quality slider applies when the target is JPG, WebP, or AVIF.
Resize Image (Optional)
Advanced settings
Additional Options
- Maintain aspect ratio
- Remove metadata (EXIF)Browser re-encoding writes a new file without the original EXIF block.
How to use this tool
Choose an image
Drop a photo or graphic. The file is read locally in this browser tab.
Set the size
Pick output dimensions that match your layout, thumbnail, or social slot.
Download the resized file
Save the new image, then compress it if you still need a smaller file size.
Frequently Asked Questions
More on quality loss: conversion quality guides · compression guides
Is the image resizer free?
Yes. Resize images online in your browser with Format Convertly at no cost.
Do my images get uploaded?
No. Resizing happens on your device. We do not store a server copy.
Can I keep the aspect ratio?
Prefer locking width or height to match your layout. For format changes with transparency, use a PNG conversion.
What if I need a different format too?
Resize first, then open a converter such as JPG to PNG or PNG to WebP for the final format.
Does compressing or converting images reduce quality?
Lossy compression can. Use higher quality settings when fidelity matters, and keep an original master. Lossless workflows preserve pixels.
Can you recover quality after compressing?
Not from the compressed file alone. Keep the original upload/export and recompress from that master if you need a better result.
What is generational loss?
Quality damage from repeatedly re-encoding lossy images. Avoid save→compress→save loops; work from a master.
Ready to convert more formats?
Browse converters or jump back to the tool above.