Image Resizer
Resize images to exact pixel dimensions with an aspect-ratio lock, one file at a time or in batches of up to 12 downloaded as a zip.
Open tool — Image ResizerImage Resizer vs Image Format Converter
Image Resizer vs Image Format Converter — What's the Difference?
The short answer: Use Image Resizer when the dimensions are the problem — it scales PNG, JPEG, and WebP to exact pixel sizes, one file or batches of 12. Use Image Format Converter when the file type is the problem — it re-encodes the same pixels as PNG, JPEG, or WebP with a quality slider. Resizing changes how big the picture is; converting changes how it is encoded.
Comparison of Image Resizer and Image Format Converter
| Image Resizer | Image Format Converter | |
|---|---|---|
| Purpose | Resize images to exact pixel dimensions with an aspect-ratio lock, one file at a time or in batches of up to 12 downloaded as a zip. | Convert HEIC/HEIF, AVIF, GIF, PNG, JPEG, or WebP to PNG, JPEG, or WebP locally. Choose the output format, quality and flattening color, then compare actual file sizes. |
| Input | PNG, JPEG, or WebP images, one at a time or up to 12 in a batch | HEIC/HEIF, PNG, JPEG, WebP, GIF (first frame), or AVIF (browser support required) |
| Output | Same-format images at 1–8,192 px dimensions, downloaded singly or as a zip | PNG, JPEG, or WebP re-encodes with a 50–95% quality setting |
| Typical use | Hitting an exact size limit: avatars, thumbnails, attachments | Cutting bytes or switching format for web publishing |
Key differences
Image Resizer vs Image Format Converter
What it does
Depends on the taskThe resizer scales dimensions with an optional aspect-ratio lock; the converter re-encodes the same pixels into a different format.
Input
Image Resizer wins hereBoth accept PNG, JPEG, and WebP, but only the resizer offers a batch mode for up to 12 files at once.
Output
Depends on the taskThe resizer keeps the original format and changes dimensions; the converter changes format and quality, not dimensions.
Best for
Depends on the taskExact pixel targets and bulk work point to the resizer; smaller bytes or a different file type point to the converter.
The tools
Image Format Converter
Convert HEIC/HEIF, AVIF, GIF, PNG, JPEG, or WebP to PNG, JPEG, or WebP locally. Choose the output format, quality and flattening color, then compare actual file sizes.
Open tool — Image Format ConverterRelated comparisons
Compare other Toolars tools
Frequently asked questions
What's the difference between Image Resizer and Image Format Converter?
Image Resizer changes an image's pixel dimensions — from 1 up to 8,192 px, optionally locked to the aspect ratio, in batches of up to 12. Image Format Converter keeps the dimensions and re-encodes the file as PNG, JPEG, or WebP with a quality slider, showing exact before-and-after byte sizes.
Can I use Image Resizer and Image Format Converter together?
Yes, and it is a common pipeline: convert to WebP or JPEG first to control format and quality, then resize to the exact dimensions your target requires. Both tools run locally in the browser.