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Image Resizer

Resize, Crop, Transform, and Export Your Images

A comprehensive image editing tool that combines resizing, cropping, rotation, and transformation features. Perfect for preparing images for web, social media, print, and more.

ResizeCropTransformPresetsWatermark

Table of Contents

1. Getting Started2. Uploading Images3. Resizing Images4. Cropping Images5. Transformations6. Adding Watermarks7. Exporting Images8. Size Presets9. Keyboard Shortcuts10. Tips & Best Practices

Getting Started

The Image Resizer tool provides a complete set of image editing features in a single, intuitive interface. Whether you need to quickly resize an image for social media or perform advanced transformations, this tool has everything you need.

Quick Start Steps:

  1. Upload an image by dragging and dropping, clicking to browse, or importing from a URL
  2. Use the sidebar tabs to access Resize, Crop, Transform, and Export options
  3. Adjust settings in each panel - changes are previewed in real-time
  4. Use the comparison slider to see before/after results
  5. Export your image in your preferred format and quality

Tip: The tool supports images up to 50MB in size. For best performance, use high-quality source images.

Uploading Images

The tool supports multiple methods for uploading your images, making it easy to get started regardless of your preference.

Supported Methods:

Drag & Drop

Simply drag your image file from your computer and drop it onto the upload area. The dashed border will highlight when you're dragging a valid file.

File Picker

Click anywhere on the upload area to open your file browser and select an image manually.

Import from URL

Click the "Import from URL" button and enter a direct link to an image online.

Supported Formats:

JPEG
PNG
WebP
AVIF
GIF
BMP

Resizing Images

The Resize panel provides multiple ways to adjust your image dimensions, from precise pixel measurements to percentage-based scaling.

Resize Modes:

Pixels

Enter exact width and height values in pixels. Use the lock button to maintain aspect ratio.

Percentage

Scale your image by percentage (25%, 50%, 75%, 100%, 150%, 200%). Quick presets for common scaling needs.

Presets

Choose from predefined sizes for social media, web, and print. Categories filter the available presets.

Aspect Ratio Lock:

The chain icon toggles aspect ratio preservation:

  • Locked (chain link shown): Changing one dimension automatically adjusts the other to preserve proportions
  • Unlocked (broken chain): Width and height can be set independently, allowing distortion

Tip: The resize panel shows the original dimensions, new dimensions, and scale percentage for easy comparison.

Cropping Images

The Crop panel allows you to remove unwanted portions of your image and apply aspect ratios for specific use cases.

Aspect Ratio Presets:

Free

No constraints

1:1 (Square)

Instagram posts

4:3

Standard photo

3:2

DSLR photos

16:9

Widescreen

9:16

Stories

4:5

Instagram portrait

2.35:1

Cinema

21:9

Ultrawide

Custom Aspect Ratio:

Enter a custom ratio in the format "width:height" (e.g., "2.35:1" or "16:9") and click Apply to use it.

Circle Crop:

Enable the circle crop option to create circular cropped images. Adjust the size using the diameter slider. Circle crops automatically export as PNG with a transparent background.

Grid Overlays:

Rule of Thirds

Divides the image into a 3x3 grid to help with composition. Place subjects along the lines or at intersections for balanced shots.

Golden Ratio

Uses the golden ratio (1.618) to create more naturally pleasing compositions. Ideal for artistic and portrait photography.

Note: Click "Apply Crop" to permanently crop your image. You can use Undo (Ctrl+Z) if you need to revert.

Transformations

The Transform panel provides tools for rotation, flipping, adding padding, borders, and border radius.

Rotation

Rotate your image by 90° increments using the quick buttons, or use the slider for precise rotation. The rotation preview shows the current angle in degrees.

Flip

Flip your image horizontally or vertically. Flips are useful for correcting mirrored photos or creating mirrored compositions.

Padding

Add padding around your image. The padding area is filled with white by default. Use the slider or quick presets (0px, 10px, 20px, 50px) to adjust the padding amount.

Border

Add a border around your image with customizable width and color. The border is drawn outside the image area. Use the color picker to match your brand or design requirements.

Border Radius

Round the corners of your image with the border radius control. Useful for creating rounded avatars, buttons, or stylized graphics. Presets include 0px, 8px, 16px, 32px, and 64px.

Adding Watermarks

Protect your images by adding text watermarks. Watermarks are applied during export and can be positioned anywhere on the image.

Watermark Options:

Enable/Disable

Toggle the watermark on or off using the switch. When disabled, no watermark is added to the exported image.

Watermark Text

Enter any text you want to use as a watermark (e.g., your name, website, or copyright notice).

Position

Choose from 5 positions: top-left, top-right, center, bottom-left, and bottom-right.

Opacity

Adjust watermark visibility from 10% to 100%. Lower opacity makes the watermark more subtle.

Tip: Use 30-50% opacity for watermarks that are visible but not distracting. The watermark automatically scales based on image size.

Exporting Images

The Export panel provides comprehensive options for saving your edited images in various formats with customizable quality settings.

Output Formats:

PNGPortable Network Graphics

Lossless compression with transparency support. Best for graphics, logos, screenshots, and images requiring sharp edges.

JPEGJoint Photographic Experts Group

Lossy compression with smaller file sizes. Best for photographs. Supports background color selection for transparency replacement.

WebPWeb Picture Format

Modern format supporting both lossy and lossless compression. Excellent quality at smaller file sizes for web use.

AVIFAV1 Image Format

Next-generation format with best compression. Supports both lossy and lossless. Best for modern web applications.

Quality Settings:

For lossy formats (JPEG, WebP, AVIF), adjust the quality slider from 1-100%. Higher values produce better quality but larger files.

  • 90-100%: Minimal compression, best quality
  • 70-89%: Balanced compression, good for most uses
  • 1-69%: Heavy compression, smaller files

Export Options:

Download

Download a single image in the selected format. The file is saved with a timestamp-based filename.

Copy to Clipboard

Copy the processed image directly to your clipboard for easy pasting into other applications.

Multi-Format Export:

Export your image in multiple formats at once by selecting multiple format buttons. Click "Download ZIP" to get a ZIP file containing all selected formats.

Additional Options:

Progressive JPEG

Loads gradually on slow connections

JPEG format only

Strip Metadata

Remove EXIF data for privacy

Note: The export panel shows an estimated file size based on your current settings. Actual size may vary slightly.

Size Presets

The tool includes presets for common image sizes used across social media, web, and print applications.

Social Media Presets:

Instagram Post1080 x 1080px
Instagram Portrait1080 x 1350px
Instagram Story1080 x 1920px
Facebook Post1200 x 630px
Facebook Cover820 x 312px
Twitter Post1200 x 675px
Twitter Header1500 x 500px
YouTube Thumbnail1280 x 720px
LinkedIn Post1200 x 627px
TikTok1080 x 1920px

Web Presets:

OG Image1200 x 630px
Favicon32 x 32px
Apple Touch Icon180 x 180px
Hero Desktop1920 x 1080px
Hero Mobile750 x 1334px

Print Presets:

A4 (300 DPI)2480 x 3508px
Letter (300 DPI)2550 x 3300px
4x6 Photo1200 x 1800px
5x7 Photo1500 x 2100px

Keyboard Shortcuts

Speed up your workflow with these keyboard shortcuts:

UndoCtrl + Z
RedoCtrl + Shift + Z
Save/ExportCtrl + S
Open ImageCtrl + O
Copy to ClipboardCtrl + C
Rotate 90°R
Flip HorizontalH
Flip VerticalV
Proportional ScalingShift
Reset CropEscape
Toggle FullscreenF
Fit to Screen1
Zoom In+
Zoom Out-
Toggle Grid OverlayG

Tip: Press the keyboard icon in the toolbar to view all shortcuts at any time.

Tips & Best Practices

Start with High Quality

Always start with the highest quality source image possible. You can always reduce quality, but you can't add detail that wasn't there originally.

Use Presets for Social Media

The built-in presets match the recommended sizes for popular platforms, ensuring your images look their best without cropping issues.

Compare Before Exporting

Use the comparison slider to see the before/after results. This helps you catch issues before exporting.

Watch File Sizes

Check the estimated file size before exporting. For web use, aim for the smallest file that still looks good.

Use Grid Overlays for Cropping

The Rule of Thirds and Golden Ratio grids help you compose better crops, especially for portraits and landscapes.

Export PNG for Transparency

If your image has transparency or needs a transparent background, always export as PNG. JPEG doesn't support transparency.

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