Image Resizer Online Free - Resize Photo in KB, Pixels, CM

Resize Photo in KB, Pixels or CM Online with Image Resizer

Our image resizer makes any photo the exact size you need - in pixels, centimetres, millimetres or inches - and compresses it to a target size in KB. It is built for everyday tasks like a passport size photo, a signature for an exam form, a WhatsApp profile picture or a product photo for your online store. Pick a preset or type your own size, see the result instantly and download it.

Use this image resizer to resize photo in KB, pixels and CM for free, on any computer or phone. The image resizer online free tool lets you resize photo in KB, pixels, CM and inches without installing anything.

Why Resize an Image ?

Phone cameras take huge photos - often 4000 pixels wide and several megabytes - while online forms, websites and apps need small, exact sizes. Government and exam portals often ask for a photo of about 200 × 230 pixels under 50 KB and a signature under 20 KB, and they reject anything larger. Social media crops photos that don't match its shape, and marketplaces prefer square product photos on a white background. Resizing gives you the right dimensions and file size every time, so uploads work on the first try.

Key Features of the Image Resizer

Any Unit :
Resize in pixels, cm, mm or inches, with a DPI setting such as 300 for printing.
Compress to KB :
Set a maximum and minimum size in KB, and the tool keeps the best quality that fits.
Ready-Made Sizes :
Presets for passport and stamp photos, form photos, signatures, Instagram, YouTube and product photos.
Crop or Fit :
Crop to fill the new shape and move the crop, or fit the whole photo on a white, black, transparent or custom background.
Signature Clean-Up :
Turn grey paper into pure white and make the ink dark and even.
Rotate and Flip :
Straighten sideways photos and mirror selfies in one click.
Private :
Images are resized in your browser and never uploaded.

How It Works

How to Resize an Image

Choose a photo, pick a size and KB limit, and download the resized image.

Choose your image

Pick a JPG, PNG or WEBP photo, or drop it on the box.

Pick a size

Choose a preset such as passport photo, signature or Instagram post, or type your own width and height in pixels, cm, mm or inches.

Adjust the crop

If the shape changes, choose crop, fit with background or stretch, and move the crop with the sliders.

Set the file size

Tick Compress to a file size and enter the KB limit from your form.

Download

Check the preview, size and dimensions, then download your resized image.

Quick and simple : Resize images online without installing any software.

Benefits of Resizing Images

Forms Accepted :
Meet the exact pixel and KB rules of online applications.
Faster Sharing :
Small photos send quickly and save phone storage.
Better Posts :
Photos fit social media shapes without awkward crops.
Neat Listings :
Square, evenly sized product photos look professional in your store.

Who Can Use This Tool?

Students and Job Seekers :
Photos and signatures for exam, admission and job forms.
Online Sellers :
Square product photos for Amazon, Flipkart, Meesho and your own website.
Social Media Users :
Profile photos, posts, stories and thumbnails in the right size.
Offices and Photo Shops :
Passport photos and ID photos at print size.

From a single signature to a full product catalogue, the image resizer makes every photo the right size.

Crop, Fit or Stretch ?

Crop to Fill

Fills the whole size and trims the edges - best for photos of people.

Fit with Background

Keeps the whole image and adds a plain border - best for signatures and products.

Stretch

Fills the size by squeezing the image - use only for small changes.

Tips for Form Photos and Signatures

Read the Notice :
Use the exact width, height and KB range the form asks for.
Use a Plain Background :
Take photos against a light wall in good daylight.
Sign on White Paper :
Use a black or blue pen and the signature clean-up option.
Check the Preview :
Make sure your face or signature is clear before uploading.

To shrink PDF documents for forms, use Compress PDF, and to turn logos into sharp vectors, try PNG to SVG.

FAQ

Frequently Asked Questions

Find answers to common questions about resizing images.

Is this image resizer free?

Yes. The PDF Cropper image resizer is free with no sign-up and no watermark, for images up to 25 MB.

How do I resize a photo to 20 KB or 50 KB?

Tick Compress to a file size, enter the maximum KB (and a minimum if the form asks for one) and download. The tool keeps the best quality that fits. If the size can't be reached, tick Make the pixel size smaller if needed.

How do I make a passport size photo?

Choose Passport size photo - 3.5 × 4.5 cm. The photo is cropped to the right shape at 300 DPI for printing; move the crop with the sliders so your face is centred.

Can I resize my signature for a form?

Yes. Choose a signature size, or tick Clean up signature to make the paper pure white and the ink dark. Then set the KB limit from the form.

Which sizes should I use for exam forms?

Sizes differ between forms, so always check the notice. Pick the closest common size and change the width, height and KB to match the notice exactly.

Is my photo uploaded?

No. The image is resized in your browser and never leaves your device.

Which formats are supported?

You can open JPG, PNG and WEBP images and save as JPG, PNG or WEBP. HEIC photos from iPhones may need to be saved as JPG first.

Image Resizer to Resize Photo in KB, Pixels and CM for Free

Image Resizer

1Choose a size

2Adjust the photo

3File size and format