Resize Images Online
Batch resize your photos by pixels or percentage instantly and 100% privately.
⚙️ Resize Settings
Drag & drop your photos here
or click to browse on your device
Supports multiple files (JPG, PNG, WebP)Batch Processing
Upload multiple images and resize them all at once with a single click, saving time.
Absolute Privacy
Your photos never leave your device. All scaling is performed locally in your browser.
Controlled Aspect Ratio
Maintain the original proportion to avoid distortion, or turn it off to fit exact custom sizes.
How to resize your images online for free
Resizing photos is essential to optimize websites, send documents via email, or meet specific upload requirements. Follow this step-by-step guide:
- Upload your photos: Drag & drop your images (JPG, PNG, WebP) into the dropzone above or click to browse files.
- Choose the resize mode: Decide whether to scale by a percentage (like reducing to 50%) or key in exact pixel values.
- Keep aspect ratio: We recommend leaving the aspect ratio checkbox enabled to prevent images from looking stretched or distorted.
- Process and download: Click "Resize all" and, after a brief simulation, click "Save photo" or "Download all" to grab your files in batch.
Frequently Asked Questions (FAQs)
Does resizing reduce file size?
Yes. By decreasing the physical pixel dimensions of an image, the data it contains drops significantly, resulting in a much lighter file size without losing clarity.
Why is Aspect Ratio important?
Aspect Ratio is the proportional relationship between width and height. If you set a fixed width without updating the height, the image gets stretched. Keeping aspect ratio on automatically calculates the perfect height.
Which formats are supported?
You can upload JPG, JPEG, PNG, and WebP files. When saving, you can choose to keep the original format or convert them to any other supported format.
Is it safe to resize personal photos on this website?
Absolutely. Unlike conventional cloud utilities, Convertify processes your photos 100% locally using HTML5 Canvas. Your photos are never transmitted or stored on remote servers.