Convert JPG to WEBP — Smaller, Same Quality

WEBP produces files 25-35% smaller than JPG at equivalent visual quality. If you're optimizing images for a website, converting your JPGs to WEBP is one of the simplest performance improvements available.

6 JPG → WEBP conversions ~1.2s average
155 format conversions supported Files deleted after 1 hour Free — no signup required

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HEIC, WEBP, AVIF, TIFF, BMP, SVG, GIF, PNG, JPG, PDF, CR2, NEF, ARW, DNG — up to 50MB each, or 50 from a folder

Re-converting from a previous conversion. Modify settings and click Convert.

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Preset:
Common
Modern
Legacy
Other

Modern format with excellent compression. Limited browser support.

Apple's format. Excellent quality at small sizes.

Lossless format. Large files, ideal for print/archival.

256 colors max. Best for simple graphics.

Uncompressed bitmap. Very large files.

Vector trace. Best for logos and simple graphics. Not a pixel-perfect conversion.

Smart
Manual

SSIM-optimized — finds the lowest file size at your chosen visual fidelity.

Need to crop first? Use the Crop tool. Want to adjust or filter? Try the Editor.

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Upscaling uses Lanczos interpolation (max 4x). Results may appear softer on images enlarged beyond 2x.

Resize tool → Live preview, percentage scaling, and dimension presets.

Tip: Use PNG or WebP for transparent output. Standalone tool →

Click or drop logo (PNG/JPG/WEBP, max 5MB)

Lossless format — files can be large

GIF is limited to 256 colors

Best for logos, icons, and line art. Photos produce stylized results.

BMP files are uncompressed and can be very large. Consider TIFF (LZW) or PNG for lossless with smaller file sizes.

Leave empty for all pages. Multi-page PDFs produce a ZIP.

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JPG vs WEBP Comparison

Feature JPG WEBP
Full Name Joint Photographic Experts Group Web Picture Format
Lossy Compression
Lossless Compression
Transparency
Animation
Browser Support All browsers, all devices All modern browsers (Chrome, Firefox, Safari 14+, Edge)
Color Depth 16.7M (24-bit) 16.7M+ (24/32-bit)
Typical Use Photos, web images, email attachments Web images (smaller than JPG/PNG with same quality)
Year Introduced 1992 2010

Why Convert JPG to WEBP?

Google specifically recommends serving images in WEBP format for web performance. PageSpeed Insights flags JPG images that could be WEBP. The conversion is straightforward: same visual quality, smaller file, faster page loads.

How to Convert JPG to WEBP

1

Upload your JPG file.

2

KoalaPic converts to WEBP at your chosen quality. Default 85% matches the visual quality of JPG at the same setting.

3

Download your optimized WEBP. 25-35% smaller on average.

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Quality Note

Both JPG and WEBP are lossy formats. Converting introduces a small theoretical quality loss, but at quality 85%, the difference is imperceptible. The 25-35% file size savings more than justify the conversion for web use.

Frequently Asked Questions

Typically 25-35% smaller at equivalent visual quality. A 500 KB JPG might become 325-375 KB as WEBP.

Yes. All modern browsers support WEBP: Chrome (2014+), Firefox (2019+), Safari (2022+), Edge. Only IE11 and very old browsers lack support.

For a website, you can use WEBP exclusively for modern browsers and fall back to JPG for the tiny fraction of users on old browsers (using the HTML <picture> element).

Yes, it is a second lossy encode. At the default quality of 85 the additional loss is not visible in normal viewing, but each re-encode costs a little — export WEBP from your original source rather than from a JPG where you can.
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