To resize a JPG online, add your photos, choose Pixels or Percentage, enter the width and height (leave one empty to keep the proportions) and press Apply. Free, private, and your images are never uploaded.
Add your images, adjust the settings with a live preview and download the result. Everything runs in your browser, so your images are never uploaded.
Loading the tool…
To resize a JPG online, add your photos, choose Pixels or Percentage, enter the width and height (leave one empty to keep the proportions) and press Apply. Pick Fit, Exact, Fill or Padding for how a fixed size is applied. Resizing uses a Lanczos filter in your browser; nothing is uploaded.
Resize JPG photos to the exact size a website, form or social network asks for. Set pixels or a percentage, choose how proportions are handled, or start from a ready-made preset. It is a free tool from Websolindia, a New Delhi website design and SEO company that builds fast, image-optimised websites.
Unlike most online image tools, this one does not upload your pictures. Your browser decodes each image, applies the edit with our own pixel code and shows a live preview before you download. You can process up to 30 images at a time and download them one by one or together as a ZIP.
Once your image is ready, you may also want the PNG Image Resizer Online, the Image Compressor to Under 100 KB or the Square Image Cropper Online. All of our free image tools are listed in the Image Resizer & Cropper Tools collection and the Websolindia Image Converter.
Use this table to choose settings with confidence.
| Preset | Pixels | Mode |
|---|---|---|
| Instagram post | 1080 × 1080 | Fill |
| Instagram story | 1080 × 1920 | Fill |
| Facebook post | 1200 × 630 | Fill |
| YouTube thumbnail | 1280 × 720 | Fill |
| LinkedIn post | 1200 × 627 | Fill |
| WhatsApp profile | 500 × 500 | Fill |
| Passport photo 35 × 45 mm at 300 ppi | 413 × 531 | Fill |
| Full HD | 1920 × 1080 | Fit |
This is exactly what happens to your image, with no hidden step. You can check that nothing is uploaded by watching your browser's network tab while you use the tool.
| Step | What happens |
|---|---|
| 1. Read and decode | The image is decoded and its camera orientation applied. |
| 2. Work out the target size | From your pixels or percentage, the target width and height are computed; if one side is empty it follows the original proportions. |
| 3. Apply the fit mode | Fit scales inside the box; Exact stretches; Fill scales to cover and crops the overflow evenly; Padding fits inside and fills the rest with your colour. |
| 4. Resample with Lanczos-3 | Each output pixel is a weighted average of nearby source pixels using a Lanczos-3 filter, with the filter widened when shrinking to avoid aliasing. |
| 5. Encode as JPG | The result is saved as a JPG at your quality setting. |
| Setting | Default | Choices | What it does |
|---|---|---|---|
| Resize by | Pixels (width and height) | Pixels (width and height); Percentage | |
| Width (px) | 1200 | 1 to 20000 | |
| Height (px) | Empty | 1 to 20000 | Leave one empty to keep the proportions automatically. |
| Scale (%) | 50 | 1 to 400 | |
| When width and height are both set | Fit inside the size, keep proportions | Fit inside the size, keep proportions; Exact size (may stretch); Fill the size and crop the overflow; Fit inside and add padding | |
| Never enlarge small images | Off | On / Off | |
| Padding colour | #ffffff | Any colour | |
| JPG quality | 90 | 1 to 100 |
| What | Formula | Notes |
|---|---|---|
| Proportional height | width × (original height ÷ original width) | Used when only one side is given. |
| Fit scale | min(target width ÷ width, target height ÷ height) | Image stays inside the box. |
| Fill scale | max(target width ÷ width, target height ÷ height) | Image covers the box; overflow is cropped. |
| Percent | width × p ÷ 100, height × p ÷ 100 | p from 1 to 400. |
| Component | Role | Where it runs |
|---|---|---|
| Lanczos-3 resampling (our own code) | Resizes | Your browser |
| Browser JPEG encoder | Saves the JPG | Your browser |
| Topic | Detail |
|---|---|
| Images per batch | Up to 30 at a time |
| File size | Up to 150 MB per image |
| Image dimensions | Up to about 120 megapixels; larger images are declined to protect your browser |
| Privacy | Images are processed in your browser and never uploaded |
| Browsers | Current Chrome, Edge, Firefox and Safari (WebAssembly is needed for AVIF, HEIC, TIFF and AI tools) |
| Metadata | EXIF and location data are not copied into new files |
Enter only the width or only the height, or choose Fit. The other side is calculated automatically.
Fit keeps proportions and stays inside the size. Exact forces the size and may stretch. Fill covers the size and crops the overflow. Padding keeps the whole picture and adds coloured bars.
A 35 × 45 mm photo at 300 pixels per inch is 413 × 531 pixels. Always check the exact requirements of the office or form you are using.
Making an image smaller keeps it sharp when done well; this tool uses a Lanczos filter for that. Making it larger cannot create detail.
Yes, up to 30 at a time with the same settings, downloadable as a ZIP.
Use the PNG Image Resizer Online, which keeps transparent areas.
Yes. It is free, needs no sign-up, adds no watermark and has no daily limit. It is provided by Websolindia.
No. Your images are read and processed inside your browser on your own device. They are never sent to Websolindia or anyone else, which is why the tool is safe for private photos.
No. New files are created from the pixels, so camera details, GPS location and other embedded metadata are not copied. Keep your originals if you need that information.
Up to 30 images per batch and 150 MB per image. Images above roughly 120 megapixels are declined with a clear message rather than freezing your browser.
Current versions of Chrome, Edge, Firefox and Safari on computers, phones and tablets. Large images and AI or AVIF features run faster on a computer.
Websolindia built it. We are a New Delhi website design, SEO and digital marketing company serving businesses since 2014. See our website designing and SEO services.
More in this collection: Image Resizer & Cropper Tools
