Compress WebP Online
Reduce WebP File Size Without Quality Loss
WebP files are lean to begin with, but re-encoding at tuned quality levels squeezes out meaningful extra bytes for sites serving thousands of images.
WebP compression profile
- Input.webp
- OutputWebP
- Typical saving20-50%
- TransparencySupported
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How to compress WebP images
- 01Drop in your WebP filesExports from design tools, CDN copies, or previously converted images all work.
- 02Tune the quality dialWebP holds up well at 65-80%; watch the estimated savings update as you slide.
- 03Download the leaner setResults keep the .webp extension and drop straight into any site or app.
Features
Modern encoder access
Uses your browser's native WebP encoder - no command-line tools or installs.
Alpha-aware
Transparent WebP stays transparent through recompression.
CDN-friendly output
Baseline WebP that Cloudflare, Fastly, and every major host serves happily.
Batch pipelines
Ideal for trimming an entire media library before a migration.
Deterministic settings
Same quality in, same character of output - easy to standardize across teams.
Zero telemetry
No analytics touch your files; the tool works entirely client-side.
Where WebP compression pays off
Squeezing an already-good format
LCP improvements
Hero images at 70% WebP quality routinely shave hundreds of milliseconds off Largest Contentful Paint.
Bandwidth budgets
Sites serving millions of images save real money from a 25% average reduction.
Mobile data kindness
Readers on metered connections notice lighter pages, even if they never mention it.
Future-proof enough
WebP support is universal in current browsers, so recompressed files remain safe to publish.
When re-compressing WebP is worth it (and when it isn't)
WebP already beats JPEG by 25-35% at equivalent quality, so gains from recompression are smaller in percentage terms. They're largest when the original WebP was encoded conservatively - many exporters default to quality 90+, leaving 30-40% of the file recoverable at quality 75 with no visible change.
Diminishing returns hit fast below quality 60. WebP's strength at low bitrates is real, but artifacts in gradients and fine text appear sooner than marketing suggests. For thumbnails and avatars, though, aggressive settings are perfectly reasonable since display size hides them.
The other consideration is generation loss. Every lossy re-encode compounds artifacts from the previous one. If a file has already passed through several compressions, going one more round at moderate quality is fine; stacking five aggressive passes is how images end up looking like watercolor paintings.
“Re-encoding a client's 12,000-image library at q78 improved their mobile LCP score by 14 points.”
Kwame Mensah - SEO consultant
“My embedded images finally fit under Gmail's clipping threshold after a WebP pass.”
Elif Kaya - Newsletter operator
“We cut egress costs noticeably just by running existing WebP assets through one more compression round.”
Marcus Bell - CTO, small SaaS
Frequently asked questions
Can browsers even encode WebP?
All current versions of Chrome, Edge, Firefox, Safari, and Opera can. The tool checks support and tells you if your browser is an exception.
How much smaller can WebP get?
Files originally exported at high quality (90+) often shrink 30-50% at quality 75. Already-optimized files see smaller gains.
Does recompression damage quality?
Any lossy re-encode adds slight generation loss. At moderate settings with a single pass, it is imperceptible for most content.
Is animated WebP supported?
This tool handles static WebP images. Animated WebP requires frame-based tooling.
Should I just use JPG instead?
WebP remains 25-35% more efficient at equal quality, so keeping WebP output is usually the right call for the web.
Do I need to install anything?
No. Encoding uses capabilities already built into your browser.