What does Image Resizer do?
Resize one image or a batch by exact pixels, percentage, or creator-focused presets such as YouTube thumbnails, channel banners, profile images, and vertical covers. Aspect locking, fit/fill framing, and default upscaling protection prevent accidental distortion while Canvas performs the work locally.
How to use Image Resizer
- 1Add PNG, JPEG, or WebP images.
- 2Choose exact dimensions, a percentage, or a creator preset.
- 3Keep aspect lock and upscaling protection as needed, then choose fit or fill.
- 4Select the output format and download resized files or a ZIP.
Supported inputs and outputs
Inputs
PNG, JPEG, WebP
Outputs
PNG, JPEG, WebP, ZIP batch
Practical uses
- Resizing YouTube thumbnails
- Preparing channel artwork
- Creating vertical covers
- Reducing a batch of oversized images
Browser and media limitations
- Upscaling does not create new detail.
- Fit mode can add background space.
- Fill mode crops edges.
- Very large dimensions can exceed Canvas limits.
How local processing works
The image is decoded and rendered with browser image and Canvas APIs. Tubelexity does not upload the source image or result to a processing server, and FFmpeg is not loaded for this tool.
Frequently asked questions
Can I resize an image to exact dimensions?
Yes. Enter pixel width and height or choose a creator preset.
Can I preserve the aspect ratio?
Yes. Aspect lock is enabled by default.
Can the tool prevent image upscaling?
Yes. The prevention toggle is enabled by default.
Can I batch-resize images?
Yes. Each source is resized and can be downloaded in one ZIP.
Are resized images uploaded?
No. Canvas processing is local.