Resize ImageImage utility
Resize Images Online
Drop an image here, or browse
Upload a JPG, PNG, or WebP image up to 25 MB to resize.
Choose files
Change image dimensions by exact pixels, percentage, or target file size. Supports JPG, PNG, and WebP with format conversion and quality control.
- In-memory processing
- 3 resize modes
- JPG, PNG & WebP
- Zero file retention
Free, no sign-upProcessed in memory
How FileNova Resizes Images
- 1
Upload your image
Upload any JPG, PNG, or WebP image up to 25 MB. FileNova immediately shows dimensions and file size.
- 2
Choose resize method
Pick Exact Dimensions for pixel-perfect control, Percentage for proportional scaling, or Target File Size to hit a specific KB limit.
- 3
Download resized image
Review the new dimensions and file size, then download instantly. Optionally convert format and adjust quality.
Need to compress after resizing? Use the Compress Image tool for additional file size reduction. For document images, try JPG to PDF to combine multiple resized images into a document.
Frequently asked questions
7How do I resize an image?
Upload your image, choose a resize method (exact dimensions, percentage, or target file size), set your options, and download the resized image. The tool shows you the original and new dimensions before you commit.
What is the difference between the three resize modes?
Exact Dimensions lets you specify pixel width and/or height — perfect when you need a specific size for a website, social media, or print. Percentage scales the image proportionally (e.g., 50% for half size, 200% for double) — great for quick scaling. Target File Size automatically adjusts compression quality to hit a specific file size in KB — ideal when you have a strict upload limit.
Does resizing affect image quality?
Downscaling (making smaller) generally preserves or improves perceived sharpness. Upscaling (making larger) adds interpolation and can soften details. The tool uses high-quality Lanczos resampling. For target file size mode, quality is adjusted automatically — lower target sizes mean more compression artifacts.
Can I resize without changing the aspect ratio?
Yes. By default, 'Maintain aspect ratio' is enabled. When you enter a width, the height is calculated automatically (and vice versa) to preserve the original proportions. Disable it only if you intentionally want to stretch or squash the image.
What output formats are supported?
JPG (best for photos), PNG (best for graphics with transparency), and WebP (modern format with excellent compression). By default, the tool matches the input format. Choose a different format if you need transparency (PNG/WebP) or want maximum compatibility (JPG).
What is the maximum file size and dimensions?
Upload limit: 25 MB. Output dimensions: up to 10,000 × 10,000 pixels. For target file size mode: 1 KB to 50,000 KB. Images larger than 25 MB should be compressed first using the Compress Image tool.
Are my images stored on the server?
No. Images are processed in memory and streamed back immediately with a no-store cache policy. Nothing is written to permanent storage or retained after the request completes.