Resize WebP

How to Resize WebP Images Online

1. Choose Your WebP Files: Drag and drop WebP images onto the page or click "Choose WebP files" — up to 50 at once. The first photo opens in the editor and the rest line up as thumbnails below it; with two or more photos open, "Add more" adds files to the same batch.
2. Set the New Size: In Resize, type a "Width" or "Height" in pixels or percent — with "Keep aspect ratio" on, the other side follows — or pick a "Size preset" (percent of original, a target height, or a platform size such as an Instagram post). The size applies to every photo in the batch.
3. Pick the Output Format (Optional): "Save as" keeps "Same as original" or saves as JPG, PNG, WebP or another format. For JPG, WebP and AVIF output, the "Quality" slider (40–100) trades file size against detail. Resize, Crop, Rotate and Flip all work in the same session, and "Undo" steps back.
4. Download: Click the Download button, which names the output format (for example "Download PNG"), for one photo, or "Download all (.zip)" for a batch — "Download one by one" saves the files separately. WebP files are processed right in your browser, so they are not uploaded. No sign-up, no watermark.

Why Resize WebP Images?

WebP is Google's modern image format — smaller than JPG and PNG at the same quality, with full transparency support. Resizing is one of the most common edits, especially for photos and design assets bound for the web. Resize first, compress second — that's the order that gives the smallest, sharpest result. Common reasons to resize:

• Faster page load times — A 4000 × 3000 photo on a 1920-wide hero section wastes ~75% of the bytes. Resizing to actual display size is the single biggest perf win for image-heavy pages.
• Responsive image srcset — Generate multiple sizes (320, 640, 1024, 1920) of one source image to serve via <img srcset>. Each viewport gets the right size, no over-downloading on phones.
• Social media platform specs — Instagram square (1080×1080), Stories (1080×1920), Twitter / X header (1500×500), LinkedIn cover (1584×396). Resize a master image to fit each platform's frame.
• E-commerce thumbnail grids — Marketplace product galleries show 200×200 or 400×400 thumbnails. Pre-resize instead of letting the browser scale a full-res master.
• Email and messaging size limits — Gmail caps attachments at 25 MB; Discord at 20 MB on the free tier; iMessage compresses on the fly. Resizing a large WebP to 1280px wide cuts file size 75-90%.
• Phone wallpaper and lock-screen images — Resize to your device's resolution (e.g., 2436×1125 for iPhone 14, 1080×2400 for Pixel) to avoid jagged scaling.
• App icon sets — Resize one square source to 16, 32, 48, 64, 128, 256 and 512 px squares, one size per download, for app distribution.

Resize Modes — When to Use Which

Common Output Sizes for Web

Frequently Asked Questions

Will resizing reduce image quality?

Downscaling (making the image smaller) preserves quality very well — it's essentially throwing away pixels you didn't need. Upscaling (making it larger) can soften the image because the resizer has to invent pixels by interpolation. For natural-looking upscales beyond 2×, an AI upscaler is better than this tool. For all downscaling and modest upscaling (up to 2×), standard resampling produces clean results.

Will transparency be preserved?

Yes. WebP supports a full 8-bit alpha channel and the resize tool preserves it exactly — logos, icons, and PNG-style transparent assets stay transparent in the output WebP.

Should I use lossless or lossy WebP?

This editor always writes lossy WebP — even at "Quality" 100 there is no lossless WebP mode — so for a pixel-exact copy of graphics, screenshots, line art, logos or icons, save as PNG instead. Lossy suits photographs: at quality 75-85 it is typically 25-50% smaller than lossless WebP and visually indistinguishable. WebP's lossy mode is high quality even at quality 70-75; aggressive settings (50 and below) can show subtle softness on natural skin tones and gradients.

Can I resize animated WebPs?

Not as an animation. The editor on this page works on the first frame: an animated WebP you resize here is saved as a still image of that frame, and the other frames are not kept. The editor says so when the file opens ("Animated WebP: an edit here keeps only the first frame."), and downloading the file without an edit gives back your original animated WebP. If a single still frame is what you want, this page is the quick way to get it at the right size.

Will the file size shrink in proportion to the dimension change?

Roughly yes, but not exactly proportional. Halving width × height = 1/4 the pixel area, which usually translates to ~70-80% smaller file (compression is more efficient at smaller sizes for natural images). Halving only one dimension cuts pixel count in half and file size by ~40-60%. Cropping is more aggressive than resizing for shrinking — see Crop WebP.

Can I batch resize many WebPs to the same size?

Yes — drop up to 50 WebP files at once (a mixed batch works too). The size, format and quality you set apply to every file in the batch; "Download all (.zip)" saves every resized result in one ZIP, and "Download one by one" saves them separately.

Should I resize before or after converting from another format?

Resize during conversion if both operations are needed — the conversion step has to re-encode anyway, so combining is more efficient. Examples: PNG to WebP lets you resize on the way out. If your source is already WebP, this resize tool is the right place.

Does DPI matter when I resize?

DPI only matters for print; screens ignore it and draw by pixel count. This editor sets pixel size, not a DPI value, so work out the pixels you need instead: inches × 300 for photo prints (a 6 × 4 in print = 1800 × 1200 px), about 150 per inch for posters and banners seen from a distance, and the platform's pixel size for web and social. Your print or layout software then sets the DPI.