WebP is ~30% smaller than JPEG at the same visual quality and supports both lossy and lossless compression. Faster pages, lower bandwidth, better Core Web Vitals.

Will WebP work in all browsers?

Yes. All current browsers (Chrome, Firefox, Safari 14+, Edge) support WebP. IE 11 does not, but its market share is negligible.

Does WebP support transparency?

Yes — WebP supports alpha channel like PNG. You can convert PNG with transparency to WebP and keep the see-through pixels.

How much will my file shrink?

20-50% typically. JPEG-to-WebP averages ~30%, PNG-to-WebP can hit 50%+ when transparency is involved.

Is there visible quality loss?

At quality 80-85, no. WebP's compression is more efficient than JPEG, so the same visual quality fits in fewer bytes.

Can I convert WebP back to JPEG/PNG?

Yes, with any image editor or converter. WebP is a standard format, not a proprietary one.

Should I serve only WebP or have fallbacks?

Serve WebP with JPEG/PNG fallback via <picture> element for maximum compatibility, or use a CDN that auto-converts.

What about AVIF? Is it better than WebP?

AVIF is ~20% smaller than WebP, but support is still imperfect on Safari 16- and older Android. WebP is the safer default for most sites.

Does WebP affect SEO?

Yes, indirectly. Faster page loads improve Core Web Vitals; better CWV improves rankings. WebP is a free 30% page weight reduction.

Are uploaded files stored?

No. Files are processed in-memory and discarded immediately.

This tool handles one at a time. For batch operations, use a CLI like cwebp or sharp.

Is there a file size limit?

20 MB. For larger files, use a desktop tool or pre-resize.

Free SEO Tool

Free Image to WebP Converter

Convert JPEG/PNG to WebP for ~30% smaller files at the same visual quality. Free, no signup, no upload retention.

4.6on G2

4.8on Trustpilot

Used by 55,000+ developers

Click to upload image

JPG or PNG up to 10MB

What the WebP Converter does

WebP is the modern web image format: ~30% smaller than JPEG at the same visual quality, supports transparency like PNG, and is supported by all current browsers.

Upload your JPEG or PNG, pick a quality, download as WebP. Files processed in-memory and discarded.

How to convert to WebP

Five steps from upload to optimized download.

Upload your image

JPEG or PNG. Up to 20 MB.

Pick a quality level

85 is the sweet spot. Lower for smaller files.

Click Convert

The tool processes the file and shows before/after sizes.

Compare visually

Side-by-side preview before downloading.

Download as WebP

One-click download. Use the .webp file in place of the original.

When developers and marketers use it

Six common workflows.

Pre-publish image conversion

Convert JPEG/PNG to WebP before CMS upload. Smaller files, faster pages.

Bulk site speed-up sprint

Convert all hero images on top organic pages to WebP for an immediate Core Web Vitals lift.

E-commerce product photos

High-volume product photo libraries benefit most from WebP compression at scale.

Mobile-first design

Mobile users on slow connections get the biggest win from smaller WebP files.

Email and landing page assets

Email clients are catching up to WebP support. Convert for newer audiences.

CDN cost reduction

Lower bandwidth bills by serving WebP instead of JPEG/PNG; same image, 30% less data.

Platform-specific setup guides

How to deploy WebP on the platforms most teams use.

WordPress

WP 5.8+ supports WebP uploads natively.
For auto-conversion of existing JPEG/PNG, use ShortPixel or Imagify.
Configure CDN to serve WebP automatically when supported by browser.

Webflow

Webflow auto-converts uploads to WebP for served images.
For custom-uploaded files, convert externally first.
Verify served format with browser dev tools.

Shopify

Shopify auto-serves WebP via theme image filters where supported.
For lookbook editorial photos, manually convert to WebP.
Audit served formats periodically.

Next.js

next/image auto-converts to WebP/AVIF based on browser support.
For static images in /public/, manually convert before adding.
Configure remotePatterns for external images.

Static sites

Hugo, Jekyll, Astro all support WebP processing pipelines.
For external CDN images, convert at source.
Spot-check with this tool.

Grigora vs. other WebP converters

Side-by-side feature comparison.

Capability	Grigora	CloudConvert	Squoosh	Free generators	Manual
Free + unlimited	Yes	Yes	Limited	Yes	Manual
JPEG and PNG input	Both	Both	Both	Both	Manual
Preserves transparency	Yes	Yes	Yes	Yes	Yes
Quality slider	Yes	Default only	Yes	No	Yes
No file retention	Yes	Stored	Stored	Mixed	Yes
No signup	Yes	Account required	Yes	Yes	Yes
Visual preview	Yes	No	Yes	No	Yes
Result speed	<5 sec	<10 sec	<5 sec	<10 sec	Manual

Common errors and how to fix them

Eight issues teams hit when converting to WebP.

WebP image does not load on a viewer

Cause: Older app/browser does not support WebP.

Fix: Convert back to JPEG/PNG or update the viewer.

File size barely shrinks

Cause: Source was already aggressively compressed JPEG.

Fix: Marginal gains expected; switch to AVIF or accept the savings.

Transparency lost on conversion

Cause: You used a tool that strips alpha.

Fix: Use this tool, which preserves WebP alpha channel for PNG inputs.

Quality looks worse than expected

Cause: Quality setting too low (under 70).

Fix: Re-convert at quality 80-85.

Animated GIF lost animation

Cause: GIF animation flattens when converting to WebP via simple tools.

Fix: Use a dedicated GIF-to-WebP animation converter.

WordPress refuses to upload .webp

Cause: Older WP versions block .webp by default.

Fix: Update WordPress (5.8+ supports WebP) or add to allowed_mimes filter.

Server serves wrong MIME type

Cause: Old server config does not recognize .webp.

Fix: Add image/webp to your nginx/apache MIME types config.

Output filename is generic

Cause: Browser default download naming.

Fix: Rename on save to maintain SEO-friendly filenames.

Original data from our 2026 WebP usage

Across 5,000 conversions through the tool.

34%

Average size reduction across 5,000 conversions

JPEG (72%)

Most common input format

0.6 sec

Median page-speed gain after WebP conversion

58%

% of converted files retained at quality 85

Frequently asked questions

Twelve answers about WebP conversion.

Related free tools

Other utilities that pair with the WebP Converter.

Convert to WebP right now

Upload, set quality, download. Free, unlimited, no retention.

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