How can I resize an image online without uploading?

Pixra processes images directly in your browser. Your file never leaves your device, making it private and instant.

Does resizing reduce image quality?

You can adjust the quality slider. Higher values keep details, lower values reduce file size. For web use, 80% quality often balances size and sharpness.

Which image formats are supported?

JPG, JPEG, PNG, WEBP and GIF. You can also choose the output format independently, for example convert PNG to JPG while resizing.

Can I resize to exact Instagram dimensions?

Yes, select Instagram Post (1080x1080) or Instagram Story (1080x1920) from presets. Aspect ratio is locked automatically.

What is the best format for YouTube thumbnails?

Use the YouTube Thumbnail preset (1280x720). JPG or WEBP at 90% quality works great for high-resolution thumbnails.

Is the aspect ratio lock important?

Locking aspect ratio prevents distortion. When enabled, changing width automatically updates height to keep the original proportions.

How do I reduce image file size for website?

Resize to smaller dimensions (e.g. 1200px wide) and choose WEBP or JPG with quality between 70-85%. This dramatically reduces weight.

Can I convert PNG to JPG while resizing?

Absolutely. Upload a PNG, then set output format to JPG and adjust quality. The tool handles both resize and conversion.

Do I need to install anything?

No. Pixra is a web app that runs entirely in your browser. No plugins, no uploads to server.

Why is my GIF not animating after resize?

GIF animations are preserved when output is GIF. If you convert to JPG or PNG, only the first frame will be saved.

Free Online Image Resizer · Pixra

Free Online Image Resizer

Resize JPG, PNG, WEBP instantly · private & browser-based

📁

Click to upload or drag & drop

JPG, PNG, WEBP, GIF

Width (px)

Height (px)

Lock aspect ratio

Preset sizes

Output format

Quality: 85%

✨ Ad space · premium placement ✨

What Is an Image Resizer?

An image resizer changes pixel dimensions without leaving your device. Pixra offers a secure, instant tool to adjust width, height, and format for social media, websites, or email.

Why Use Our Free Online Image Resizer?

No uploads, no servers. Resize directly in your browser with professional presets, aspect ratio lock, and quality control. Perfect for creators and developers.

How to Resize Images Online

Upload your image, choose dimensions or a preset, adjust quality, and download. It’s that simple.

Supported Image Formats

JPG, JPEG, PNG, WEBP, and GIF. Output to JPG, PNG, or WEBP with adjustable compression.

Benefits of Resizing Images

Faster websites, smaller emails, optimized social media posts, and reduced storage usage.

Frequently Asked Questions

Resize image online without losing quality?

Use 85-100% quality and keep dimensions proportional.

Reduce image dimensions for Instagram?

Select Instagram preset, it sets 1080×1080 or 1080×1920.

JPG resize vs PNG resize?

JPG is smaller, PNG supports transparency. Choose based on need.

WEBP resize advantages?

WEBP offers smaller files with excellent quality, ideal for web.

Image quality slider explained

Lower percentage reduces file size; higher retains details.

Can I resize GIF?

Yes, but output as GIF keeps animation. JPG/PNG shows first frame.

Best Facebook cover size?

820×312 pixels. Use the preset for exact dimensions.

YouTube thumbnail resolution

1280×720 pixels, JPG or WEBP at 90% quality.

Does this tool store my images?

No. Everything stays on your device.

Image optimization for SEO

Resize to needed display size and compress to improve load speed.