Are my images uploaded to your servers?

No. Resize Image runs entirely in your browser using the Canvas API. Your images are never sent anywhere — verify in DevTools → Network that no upload occurs.

Which resize mode should I pick?

Use Max dimension to keep the longer side of every image at or below a chosen pixel value (great for normalizing a batch). Use Exact pixels when you need a specific width and height (e.g. an avatar that must be 512×512). Use Percentage to shrink by a relative amount (e.g. 50% of the original).

Will the aspect ratio be preserved?

Max dimension and Percentage always preserve the aspect ratio. Exact pixels preserves the ratio by default — click the lock icon next to Height to override and produce stretched output.

What's the best output format?

JPG is the safest default for photos. WebP is roughly 25% smaller at the same visual quality and is supported in every modern browser, email client, and OS. Use PNG only if you need lossless quality or transparency.

Will resizing reduce the file size?

Yes — fewer pixels means a smaller file. Combining a smaller dimension with WebP or JPG at 80–90% quality often shrinks files by 70–90% with no visible loss. The before/after byte counts appear in the result list.

Can I upscale an image?

Yes — set the target larger than the original. The browser uses high-quality bilinear interpolation, but no resizer can invent detail that isn't in the source. Expect softness when going beyond 1.5× the original resolution.

Is Resize Image free?

Yes. Like every Converter.Plus tool, Resize Image is free with no signup, no watermark, and no per-file limits.

Resize Image — Resize JPG, PNG, WebP Online Free

What is image resizing?

Resizing an image changes its pixel dimensions — the actual width and height of the picture. Smaller dimensions mean faster downloads, smaller files, and pages that look right on mobile screens; bigger dimensions are sometimes needed for print. Resize Image is a dimension-focused companion to /image-optimizer — both run entirely client-side and re-encode through the browser's Canvas API. If you also want to compress the result with the exact same encoder the optimizer uses, run the file through /image-compressor next.

Why resize an image?

Match the display size — a 4000-px-wide phone photo on a 1280-px-wide blog post is wasted bytes.
Hit a platform's limit — Twitter caps at 4096×4096, LinkedIn prefers 1200×627 for link previews, eBay rejects images under 500 px.
Faster page loads — Largest Contentful Paint (LCP) improves dramatically when hero images are right-sized.
Email and chat — phone photos are usually too big to attach without resizing.
Privacy — downscaling drops pixel-level metadata that can leak detail.

How to resize an image — step by step

Open Resize Image. Go to converter.plus/resize-image in any browser.
Drop your images. Drag JPG, PNG, or WebP files onto the drop zone, or click to select them.
Choose a resize mode. Pick Max dimension to clamp the longer side, Exact pixels for an explicit size, or Percentage to scale uniformly.
Pick output format and quality. JPG with quality 85% is a great default. WebP is the smallest. PNG is lossless.
Click Resize images. Resizing happens locally with the Canvas API. Download each image or grab them all in a ZIP.

Which resize mode should I use?

Max dimension caps the longest side at a chosen pixel value while keeping the aspect ratio — best for "make every image fit in 2000 px" workflows. Exact pixels sets a precise width and height (lock the ratio to avoid distortion) — best when a platform requires a specific size. Percent scales the image by a percentage of its original size — best for batch-shrinking many phone photos at once. The aspect-ratio lock prevents accidental stretching in any mode.

Is it private?

Yes. Resizing happens in your browser using the Canvas API — the same pipeline the main Image Optimizer uses to re-encode. Your images are never uploaded, there is no server file-size limit, and the tool works offline once the page has loaded.

Resize Image

Drop images to resize

What is image resizing?

Why resize an image?

How to resize an image — step by step

Which resize mode should I use?

Is it private?

Frequently Asked Questions