Resize WebP

How to Resize WebP Images Online

1. Upload Your WebP File: Drag and drop or click "Add Files" to select a WebP file. Photos saved from websites, design exports, screenshots, animated WebPs, and downloaded illustrations all work. Only the first file you pick is loaded — this editor works on one image at a time, not a batch queue.
2. Set Target Dimensions: Enter exact width × height in pixels, scale by percentage (e.g., 50%), or pick a resolution preset. Aspect ratio lock prevents distortion when only one dimension is set. Choose from common breakpoints (320 / 640 / 768 / 1024 / 1280 / 1920 px wide).
3. Pick Quality and Encoding: Choose lossless mode for assets that must stay bit-perfect, or set a quality preset (Highest → Lowest) for lossy WebP. Set DPI from 72 / 96 (screen) up to 300 / 600 / 1200 (print). Indexed-color palette options (8 / 16 / 64 / 256 colors) shrink graphics dramatically.
4. Resize and Download: Click Resize. Processing happens locally in your browser — 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 8 / 25 MB; 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 — Output a single source as 16, 32, 48, 64, 128, 256, 512 px squares 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?

Lossless for graphics, screenshots, line art, logos, icons — perfect quality, often smaller than PNG. Lossy for photographs at quality 75-85 — 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?

Yes — animated WebPs resize frame-by-frame, with the same dimensions applied to every frame. The output is a smaller animated WebP. If you need a single still frame, see WebP to PNG.

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?

Not on this page — the editor holds one image at a time; resize it, save, then + Start New for the next file. For a real batch — the same target dimensions applied to a whole image library in one session — use Compress WebP, which runs server-side and includes a resolution step alongside compression.

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.

What DPI should I pick?

For screen / web: 72 or 96 DPI. For inkjet draft prints: 150 DPI. For high-quality offset printing: 300 DPI. For fine-art prints: 600+ DPI. Note: DPI is metadata that tells the receiving software how big the image should print — it doesn't change the pixel dimensions. To actually change resolution, use the width × height fields.