Image Resizer

Resize any image to exact dimensions. Free, instant, private. Maintain aspect ratio or custom size.

🖼
Drop an image here or click to browse
Supports JPEG, PNG, WebP, GIF, BMP
Image preview
Original: -
File size: -
Resized: -
Original dimensions-
Original file size-
Resized dimensions-
Resized file size-
Format-

How It Works

1

Upload Image

Drop any image file or click to browse. Supports JPEG, PNG, WebP, GIF, and BMP formats. All processing stays in your browser.

2

Set Dimensions

Enter custom width and height, or pick a preset for Instagram, Twitter, Facebook, or YouTube. Aspect ratio lock keeps proportions intact.

3

Resize

Click the resize button to process the image using Canvas API. The resized preview appears instantly with no server upload needed.

4

Download Result

Download your resized image as JPEG, PNG, or WebP. Choose the format that best suits your needs and quality requirements.

About Image Resizer

Resize any image to exact pixel dimensions directly in your browser. Upload your photo, set the target width and height with optional aspect ratio lock, and download the result. No file is ever uploaded to a server — every resize operation happens locally on your device using the HTML5 Canvas API. Choose from preset social media sizes for Instagram, Twitter, Facebook, and YouTube, or enter custom dimensions down to the pixel. Supports JPEG, PNG, WebP, GIF, and BMP input formats with output in JPEG, PNG, or WebP.

Preset Sizes

Quick-select dimensions optimized for Instagram, Twitter, Facebook, and YouTube posts. No need to look up platform specs.

Aspect Ratio Lock

Toggle on to keep your image proportions intact when changing one dimension. The other dimension auto-adjusts to match.

Multiple Formats

Upload JPEG, PNG, WebP, GIF, or BMP. Download the resized result as JPEG, PNG, or WebP — whichever format fits your workflow.

100% Private

All image processing happens in your browser using the Canvas API. Nothing is uploaded. Your images never leave your device.

📋 Common Use Cases

Data Integration

Convert CSV exports to JSON for API development, or JSON to CSV for spreadsheet analysis. Bridge data formats without writing conversion scripts.

Document Conversion

Transform documents between formats for compatibility — DOCX to PDF for sharing, HTML to Markdown for CMS migration, or images to JPG for web optimization.

Development Workflow

Convert between data serialization formats during development. Transform API responses, config files, or test data between JSON, XML, and CSV.

Content Migration

Move content between platforms by converting to the required format. HTML to Markdown for static site generators or Markdown-ready CMS platforms.

🪜 How to Use This Tool

  1. Upload or paste your source file
    Drag and drop a file or paste your data directly. Most converters accept files up to 50MB and auto-detect the input format.
  2. Set conversion options
    Choose output format, quality settings, delimiter preferences, or encoding options depending on the converter type.
  3. Convert and preview
    Click convert and review the output. Text-based converters show a live preview; file converters display the output file details.
  4. Download the result
    Click download to save the converted file to your device. Your original and converted files are never uploaded to any server.

📚 Related Guides

Frequently Asked Questions

Are these converters free?▼
Yes. All converters are completely free. No signup needed.
How accurate is the unit converter?▼
It uses standard conversion factors for length, mass, temperature, area, volume, and speed. Results are precise to 6 decimal places.