Resize Image

Change image dimensions with high-quality resizing

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Resize Options
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Upload an image to see the preview and resize options

Resize Image Online — Complete Guide

Change image dimensions for websites, social platforms, and print without desktop software. PdfPeaks resize tool scales JPG, PNG, and other formats by pixel size or percentage while helping you hit platform requirements quickly.

How It Works

Upload an image, enter target width and height (or pick a preset), maintain aspect ratio if desired, and apply. Download the resized file ready for CMS upload, email, or document embedding.

  • Step 1 — Upload: Select the image to resize.
  • Step 2 — Dimensions: Set pixels or percentage scale.
  • Step 3 — Download: Save the optimized dimensions.

Security & Privacy

We treat uploaded files as sensitive data. When you use the image resize tool on PdfPeaks, files are transferred over encrypted HTTPS/TLS connections and processed on secure servers in isolated temporary storage. They are used only to perform the operation you requested. Uploaded files and outputs are not permanently stored, are not used to train machine-learning models, and are never sold or shared with third parties for marketing. Temporary files are automatically removed after processing. For full details, see our Privacy Policy and Terms of Service.

Common Use Cases

Professionals, students, and everyday users rely on this tool for tasks such as:

  • Web: Match hero banner and thumbnail specs.
  • Social: Fit Instagram, LinkedIn, and cover photo sizes.
  • E-commerce: Standardize product photo dimensions.
  • Email: Reduce width so messages load fast.
  • Documents: Shrink oversized scans before PDF conversion.

Tips for Best Results

Upsizing small images may look blurry — start from the highest resolution source. Try Compress Image after resizing. Formats: JPG, PNG, WebP, and more.

Frequently Asked Questions

Yes, PdfPeaks image tools are free to use in your browser.

No. Files are processed in temporary secure storage and deleted after processing.

No. We never sell your uploads or personal data.

Most tools support JPG, PNG, WebP, GIF, and BMP depending on the converter.

No. All image tools run online — no download required.

Guest uploads are typically limited; signed-in users may have higher limits.

You retain rights to your files; ensure you have rights to the source material.

Higher compression reduces file size and may soften fine detail — preview before sharing.