IMAGE TOOLS
Image Resizer
Batch resize images to exact pixel dimensions for websites, documents, profile pictures or social posts.
Quick answer: Add one or more images, choose fit, fill-and-crop or exact sizing, set the output format and quality, then download individual results or one ZIP.
Use Image Resizer ↓Loading the tool…
How to use Image Resizer
- Add imagesChoose one or many images. Batch resizing applies the same settings to every file. Pick a preset such as Instagram, YouTube or LinkedIn, or resize by percentage.
- Pick a sizing modeUse Fit to keep the whole picture inside the size, Fill to crop to an exact frame, or exact sizing when a platform demands specific pixels.
- Set format and downloadChoose JPG, PNG or WebP and a quality level. Small images are not enlarged unless you turn that protection off. Review the original and new dimensions, then download each file or a ZIP.
About this tool
Every platform wants a slightly different size. Pick a preset such as Instagram 1080×1080 or a YouTube thumbnail at 1280×720, or enter your own pixels or a percentage, and resize a whole batch in one go.
Common uses: Use it to prepare profile images, product photos, blog graphics and document illustrations at consistent pixel dimensions.
Practical example: Choose Fit when the whole image must remain visible, or Fill and crop when a fixed social-media frame matters more than preserving every edge.
Important limitation: Upscaling cannot create detail that was not present in the source. Review the output dimensions and format before replacing the original.
Resizing happens in your browser on a copy of each image, so your originals stay untouched and nothing is uploaded. Read the privacy information.
How it works
Each image is drawn onto a canvas at the target size using your fit mode, then exported in the format you choose. Fit keeps the whole image, Fill crops to the frame, and exact sizing sets both sides.
Real-world uses
- Making thumbnails of a consistent size for a gallery
- Meeting a marketplace’s exact image dimension rules
- Reducing photos before attaching them to an email
Choosing fit, fill or exact
Fit within box keeps the whole picture and its proportions, so a wide photo placed in a square box ends up smaller than the box. Fill box and crop covers the entire frame and trims whatever overflows, with a crop anchor to choose which part you keep. Exact size forces both dimensions and can stretch the image, so use it only when a form demands an exact pixel size.
Make images at the size they will be displayed, or at twice that for high-density screens, rather than uploading a huge file and letting a website shrink it. Do not enlarge small images; the tool protects against upscaling by default, because enlarging adds pixels but not detail.
Format and quality settings come after sizing. For photos use JPG or WebP; for graphics with text or transparency use PNG.
Tips for better results
- Export at the exact pixel size a platform asks for instead of letting it rescale for you.
- For sharp screens, export at 2× the display size (for example 1200 px for a 600 px slot).
- Avoid upscaling small images; it enlarges pixels without adding detail.
Frequently asked questions
What is the difference between Fit and Fill?
Fit keeps the complete image and adds no crop; Fill reaches the target frame by cropping excess edges.
Can I resize several images together?
Yes. Add multiple supported images and download individual results or a ZIP package.
Are my files uploaded?
Resizing happens in your browser on a copy of each image, so your originals stay untouched and nothing is uploaded.
Which size should I use for social media?
Sizes change often, so check the platform’s current guidance. Common starting points are 1080×1080 for square posts and 1200×630 for link previews.
Will resizing change the aspect ratio?
Not in Fit mode. Fill crops the edges to reach the exact frame, and exact/stretch sizing can distort an image, so preview before downloading.
What size should an Instagram post be?
The presets include 1080×1080 for a square post and 1080×1350 for a portrait post. Platforms change guidance, so check the current recommendation if the exact size matters.
How do I resize without cropping?
Use Fit within box. The whole image is kept and proportions are preserved; the output may be smaller than the box in one direction.
Can I resize by a percentage?
Yes. Change Resize by to Percentage and enter a scale, for example 50 to halve both dimensions.