About this tool
Change an image’s pixel dimensions for a layout, listing or document. Keep its proportions with the aspect setting, or enter an independent target height when you need a specific rectangle.
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
मुख्य इनपुट और नियंत्रण हिंदी में देखने के लिए ऊपर “🇮🇳 हिंदी में देखें” चुनें। गणना और फ़ाइल प्रोसेसिंग इसी ब्राउज़र टैब में होती है; टूल आपके इनपुट हमारी होस्टिंग पर नहीं भेजता।
Features
- Read the selected image’s original dimensions automatically.
- Keep proportional height from the target width, or unlock the ratio and enter a target height.
- Preview and download a resized version without replacing the original.
Benefits
- Prepare consistent dimensions across a set of images.
- Avoid accidental stretching by retaining the original proportions.
Who should use this tool?
- People preparing website images.
- Sellers resizing product photographs.
How to use
- Choose an image and check its detected original width and height.
- Set a target width. Keep the aspect ratio locked for proportional height, or unlock it and set the target height.
- Wait for the processed preview, download and check the saved pixel dimensions.
Try these worked examples
| Scenario | Example inputs | Example result |
|---|---|---|
| Resize 2400×1800 Photo to 1000px Width (Locked → 1000×750 px) | Original Width (px): 2400Original Height (px): 1800Target Width (px): 1000Lock Aspect Ratio?: Yes — Keep Proportional HeightTarget Height (px — if unlocked): 750 | 1000 × 750 px (0.75 MP, down from 4.32 MP) |
| Exact 1200×630 OpenGraph Social Banner | Original Width (px): 1920Original Height (px): 1080Target Width (px): 1200Lock Aspect Ratio?: No — Use Exact Target Height BelowTarget Height (px — if unlocked): 630 | 1200 × 630 px (0.76 MP, down from 2.07 MP) |
Reference and processing
HTML5 Canvas 2D Context High-Quality Image Smoothing
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
FAQs
Will enlarging an image restore missing detail?
Increasing the pixel dimensions does not recover detail that was absent from the original. Inspect the downloaded image at its intended display size, especially after enlarging a small source.
Which inputs do I need for Image Resizer (Exact Pixel Width × Height with Aspect Ratio Lock)?
Use Original Width (px); Original Height (px); Target Width (px); Lock Aspect Ratio?, then complete the remaining fields for your scenario. The built-in examples show how those fields fit together.
What should I check before using this result?
Browser canvas limits and available memory vary. Enlarging dimensions does not restore missing source detail; unlocking the aspect ratio can stretch the subject. Keep the original file. Check the saved format, dimensions, page order and content before replacing or sharing a document.
What happens to the information I enter?
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server. Tool favourites save only tool IDs in this browser. Sharing sends the tool link, not your working values or files.