1
Add Your WebP Files
Drag and drop images onto the page, or click "Add Images" to browse. Select up to 50 files at once (100MB maximum per file). Also accepts JPG, PNG, and AVIF—they'll convert to WebP output.
Compress WebP
Reduce WebP file size upto 50% using WebP Compressor
100% Private
Instant Processing
Unlimited Files
Free Forever
Drag & drop your files here
Max 50 files • Max file size: 100MB
Accepted formats: .webp, .jpg, .jpeg, .png, .avif
Private
Fast
Unlimited
Free
75%
Compression Settings
Customize output
Customizing
image.jpg
75%
🗜️ Smaller file✨ Better quality
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File Size--
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-- MB
Compressed
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⏳ Compressing...
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What is WebP? Google's Modern Image Format
25-35% smaller than JPEG, with transparency support
WebP is an image format developed by Google, released in 2010. It's based on the VP8 video codec (for lossy compression) and VP8L codec (for lossless). The goal: replace both JPEG and PNG with a single format that handles photos, graphics, and transparency—all at smaller file sizes.
Two Compression Modes in One Format
WebP's killer feature is flexibility. Lossy mode (VP8) works like JPEG but produces files 25-35% smaller at the same visual quality. Lossless mode (VP8L) works like PNG but averages 26% smaller. And here's what JPEG can't do: lossy WebP with transparency. You get small file sizes AND alpha channels.
Browser Support: 97%+ Global Coverage
Safari was the last holdout, adding WebP support in 2020 (Safari 14, macOS Big Sur, iOS 14). Today, Chrome, Firefox, Safari, and Edge all support WebP natively. Only Internet Explorer and very old mobile browsers lack support—that's less than 3% of users globally.
100% Browser-Based Compression
This tool compresses WebP images entirely in your browser using WebAssembly. We use Google's libwebp encoder (the same code Chrome uses). Your files never leave your device—no upload to any server, complete privacy guaranteed.
How to Compress WebP Images in 3 Steps
Fast, free, and entirely in your browser
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Choose Compression Mode
Pick from five presets. Maximum Compression (default) gives you the smallest files. Lossless preserves every pixel. Target Size hits exact limits like 100KB. Custom Quality gives you a 1-100 slider.
3
Download Results
Compression takes 1-2 seconds per file (we use 4-6 parallel workers for batches). Download files individually or grab everything as a ZIP. Our "never return larger" guarantee means you always get smaller files.
Parallel processing: 4-6x faster for batches
WebP Compression Modes Explained
Five presets for different use cases
SMALLESTMaximum CompressionQuality: 30 · Method: 6 · 40-60% reduction
Uses VP8 lossy codec with quality 30 and method=6 (maximum encoding effort). Method 6 is 2-3x slower than method 4 but produces 5-10% smaller files. Best for web thumbnails, social media images, and anywhere file size matters more than pixel-perfect quality. Transparency fully preserved.
02High QualityQuality: 80 start · 15-30% reduction
Starts at quality 80, guarantees at least 10% file size reduction. If the first attempt doesn't hit 10%, it retries at quality 75, then 70, down to quality 50 minimum. Maintains excellent visual quality—imperceptible difference for most viewers. Use for photography portfolios and product images.
PERFECTLosslessVP8L codec · 10-30% reduction
Uses VP8L lossless codec. Pixel-perfect output—no quality degradation whatsoever. Averages 26% smaller than PNG at same quality. Best for logos, icons, design assets, and archival. Existing WebP files can be re-optimized losslessly for additional 10-15% reduction.
04Target Size1KB to 10MB · ±8% tolerance
Need exactly 100KB for a form upload? Enter 100KB. Our binary search algorithm calculates bits per pixel (BPP) from your target, estimates starting quality, then iteratively refines (typically 2-3 attempts) until it hits your target within 8% tolerance. Enable Resize if your target is under 1% of original size.
05Custom QualityRange: 1 to 100
Manual slider control. Quality 1 = extreme compression (tiny file, visible artifacts). Quality 100 = minimal compression. WebP quality scale is similar to JPEG—most images look good at 70-85. Experiment to find your balance between file size and visual quality.
WebP vs PNG vs JPEG: Which Should You Use?
A practical comparison based on real-world use cases
WebP
Best for: Modern web projects, when smallest file size matters, and you need transparency.
Why: 25-35% smaller than JPEG, 26% smaller than PNG. Supports lossy, lossless, AND transparency in one format. 97%+ browser support.
TransparencyYes
ModesBoth
PNG
Best for: When 100% browser support is required, archival, legacy systems.
Why: Universal browser support (including IE). Lossless only—no lossy mode. Larger files than WebP lossless. Great for logos, icons, and graphics with text.
TransparencyYes
ModesLossless
JPEG
Best for: Photos when WebP isn't supported, legacy systems, email attachments.
Why: Universal support. Lossy only—no lossless mode. No transparency (alpha becomes white). Larger than WebP at same quality. Still the safe default for maximum compatibility.
TransparencyNo
ModesLossy
Quick decision: For modern web projects, use WebP—it's the best balance of file size, quality, and features. Need 100% browser support? Use PNG for graphics, JPEG for photos. Building for email or old systems? Stick with JPEG/PNG.
Re-Optimizing Existing WebP Files
Already have WebP images? You can often squeeze out 10-25% more. WebP files from export tools (Photoshop, Figma, Squoosh) aren't always optimally compressed. Our tool re-encodes with Google's libwebp at method=6 for maximum efficiency. Lossless WebP can be re-optimized without any quality loss.
Your WebP Files Stay Private
100% browser-based processing via WebAssembly
Unlike other compression tools that upload your files to a server, we process everything locally. Your browser loads Google's libwebp encoder (compiled to WebAssembly), decodes your image, compresses it, and outputs the result—all in your device's memory. No upload. No storage. No exposure.
Works Offline After Page Loads
Once the page loads, you can disconnect from the internet and keep compressing. The WASM modules are cached by your browser. This is perfect for confidential images—client photos, unpublished designs, personal documents. Technically impossible for us to see your files because they never leave your browser.
WebP Browser Support
97%+ global coverage as of 2024
Mobile Support
iOS 14+ (2020) and Android 5+ (2014) both support WebP natively. Safari on iOS was the last major mobile browser to add support. If you're targeting modern mobile users, WebP is fully supported.
Fallback Strategy
For the ~3% of users without WebP support (mostly Internet Explorer), use the <picture> element to serve WebP with JPEG/PNG fallback. Most modern frameworks handle this automatically.
Frequently Asked Questions
Everything you need to know about WebP compression
WebP is an image format developed by Google in 2010. It uses VP8 (lossy) and VP8L (lossless) codecs to achieve 25-35% smaller files than JPEG and 26% smaller than PNG at the same quality. It supports both compression types AND transparency—something JPEG cannot do.
Add your WebP file (drag-drop or click "Add Images"), choose a compression preset—Maximum Compression for smallest files, Lossless for perfect quality—then click Compress. Download individually or as a ZIP. Takes 1-2 seconds per file.
Yes. Already-optimized WebP files can often be further compressed 10-25%. Our tool re-encodes with Google's libwebp at method=6 (maximum effort). Lossless WebP can be re-optimized without quality loss. Lossy WebP can be re-compressed at lower quality for additional savings.
Yes—if the tool processes locally. We use browser-based WebAssembly; your files never leave your device. No upload to any server. Open DevTools Network tab to verify—zero file uploads. Other tools require uploading (privacy risk). Ours works offline after page loads.
WebP is typically 26% smaller than PNG (lossless) and can go 60-80% smaller with lossy mode. Both support transparency. PNG has 100% browser support; WebP has 97%+. For modern web projects, WebP wins. For legacy systems or archival, PNG is safer.
WebP is 25-35% smaller than JPEG at the same perceived quality. WebP also supports transparency (JPEG can't). JPEG has 100% browser support; WebP has 97%+. For photos on modern websites, WebP is better. For email attachments or legacy systems, JPEG is safer.
Depends on mode. Lossy mode removes details (like JPEG), but at same file size, WebP looks better than JPEG. Lossless mode preserves every pixel—zero quality loss. High Quality preset (quality 80+) is imperceptible to most viewers.
Chrome 23+ (2012), Firefox 65+ (2019), Safari 14+ (2020), Edge 18+ (2018). Mobile: iOS 14+, Android 5+. That's 97%+ of global users. Only Internet Explorer and very old browsers lack support.
Both. WebP supports lossy compression (VP8 codec, like JPEG) and lossless compression (VP8L codec, like PNG). You choose which mode to use based on whether you prioritize file size (lossy) or perfect quality (lossless).
Yes. WebP supports full 8-bit alpha channels (256 levels of transparency) in BOTH lossy and lossless modes. This is unique—JPEG can't do transparency at all, and PNG only supports lossless. WebP lets you have lossy compression WITH transparency.
Use Lossless mode. It compresses using the VP8L codec—pixel-perfect output with zero quality degradation. You'll get 10-30% reduction on unoptimized WebP files. For even smaller files with imperceptible loss, try High Quality preset (quality 80+).
No. We use WebAssembly for browser-based processing. Your images decode, compress, and encode entirely in your device's memory. No XHR or fetch call to any compression endpoint. Works offline after page loads. Open DevTools Network tab to verify—zero file uploads.
Ready to Compress Your WebP Files?
Reduce file size by up to 50% with Google's libwebp encoder. 100% browser-based—your images never leave your device.
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