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Browse this task →| Criterion | Squoosh (Google Chrome Labs) Image compression 97/100 Seven-aspect task score Free, open-source, login-free and ad-free on-device processing suits privacy and fine control; results depend on the chosen codec and settings. Tested export JPEG · Output attached Historical test · 2026-10-18 | Ezgif Image compression 91/100 Seven-aspect task score A classic 14-year-old no-login free utility supporting on-device WebAssembly lossless compression; ideal for users wanting 100% fidelity without sign-up. Tested export 2048 × 2048 · PNG Historical test · 2026-10-31 |
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| Pricing & rules | ||
| Pricing plans | Squoosh in-browser local image compressor; open-source free · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Squoosh Web (Open-source free)2026-10-21 ↗ Free Free Free Completely free without login; local browser processing with no usage-count or file-size hard caps and full-resolution unwatermarked export. 1 plan / billing-period records, all listed; — means that period is not recorded. The official page states that all work runs locally in the browser so images never leave the device; it is an Apache-2.0 open-source tool with no paid tiers or in-app purchases. Cancellation, sources & verification recordCompletely free open-source tool with no accounts or subscription charges. Squoosh official page and open-source notice ↗ · 2026-10-21 Capture 1 ↗ | Ezgif 100% free web utility structure · 2026-10-30 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-30 ↗ Free Free Free 100% free without login, up to 100MB file limit, unlimited daily uses Animated GIF/WebP/AVIF maker, optimizer/compressor, video converter 1 plan / billing-period records, all listed; — means that period is not recorded. All features are 100% free without sign-up or credit card, supporting files up to 100MB with unlimited conversions. Cancellation, sources & verification recordCancellation and refund terms unverified Ezgif About & Engine Information ↗ · 2026-10-30 Capture 1 ↗ |
| Free & trial allowance on the test date | Unlimited free forever with no daily count or file size caps | Unlimited free usage, max 100MB per file |
| Cancellation & refunds | Completely free open-source tool with no accounts or subscription charges. | Not verified |
| Disclosure of costs & limits | Original size, compressed size, and reduction percentage are displayed in real time on drop | Tool limits and lossless optimization options clearly shown on upload header |
| Task quality | ||
| Measured fixture results | File reduction: 93.26% · Output size: 278.8 KB | File reduction: 13.95% · Output size: 3560.8 KB |
| Fixture findings | Local processing reduced this fixture by about 93%; results depend on the codec and settings. | On-device WASM lossless optimization reduced file size by ~14% with flawless PSNR and SSIM fidelity; requires a few seconds of local computation. |
| Original historical observation | Squoosh is the gold standard of honest online utilities: uploading 0 bytes to any server, its local WebAssembly engine compresses our 4.24 MB 2048×2048 anchor image down to 278.8 KB (-93.26%) in 0.85s while maintaining PSNR=37.13 dB and SSIM=0.9973 (02_workspace.png). | Ezgif provides a genuine lossless PNG compressor powered by OxiPNG: retaining full 2048×2048 dimensions and RGBA transparency, it cuts our 4.24 MB test asset by 13.95% (3,560.8 KB) at absolute fidelity with PSNR = 99.99 dB and SSIM = 1.0 (02_workspace.png, 03_download.png). |
| Suitable uses · historical assessment | Privacy-conscious users, developers, and designers who refuse to upload sensitive photos to cloud servers and want fine-grained codec control with real-time split-screen preview | Users and developers who require mathematical pixel fidelity (PSNR = 99.99 dB, SSIM = 1.0) while slimming down oversized PNG assets quickly without registration |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | JPEG · Output attached · No watermark in test | 2048 × 2048 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (unlimited dimensions, local WebAssembly zero-watermark export) | 2048×2048 (native resolution lossless PNG, zero watermarks) |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Focused on single-image interactive codec tuning | Single or multiple file upload direct in web interface |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | Not verified | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 0.85s · End-to-end reference: 0.85s | Recorded local processing time: 4s · End-to-end reference: 4s |
| Date & fixture | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) | 2026-10-31 · anchor_compress_v1 · US-West (California, AS2914) |
| Repeated tests & reliability | No standardized repetition count, success rate or variability range is recorded. | No standardized repetition count, success rate or variability range is recorded. |
| Interaction experience | ||
| Account requirements | No login in this test | No login in this test |
| Sign-in methods | 100% No Login Required (no account system, pure client-side browser utility) | No login required (anonymous utility) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero sign-up, zero popups, and zero ad trackers—opens directly into a millisecond-responsive split-screen comparison workspace. | Zero mandatory registration, no gating popups, and no artificial countdowns. While display ads are present, they do not disrupt compression and export. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Google Chrome Labs | Ezgif.com |
| Recorded origin | Mountain View, California, USA | Latvia |
| Domain history record | 2018–Present (maintained by Google Chrome DevRel) | 2012–Present (14 years online) |
| Background & reputation assessment | Created and open-sourced by the Google Chrome Web DevRel team as the reference WebAssembly image codec playground. | Continuously operated since 2012 by independent creators, widely respected for robust integration with standard open-source CLI engines (OxiPNG, ImageMagick, gifsicle). |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | On-device processing |
| Third-party tracking record | Not verified | Google AdSense · Google Analytics |
| Engineering & privacy assessment | CDP network capture confirms 100% client-side WebAssembly execution (MozJPEG / OxiPNG / WebP / AVIF) with 0 bytes uploaded to any remote server; works offline as a PWA. | CDP network inspection confirms PNG compression executes locally via WebAssembly (squoosh_oxipng_bg.wasm). Server-side processing runs on temporary caches auto-purged within 1-2 hours. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | This flow runs locally; post-close deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 35 / 35 100% open-source and free with zero paywalls, zero in-app purchases, zero resolution caps, and zero ads. Dragging in the 4.24 MB (2048×2048) anchor image immediately enables real-time split-slider comparison and one-click export (01_landing.png, 02_workspace.png, 03_download.png). | 35 / 35 100% completely free with no subscriptions, paywalls, or resolution reductions. Uploading our 4.24 MB (2048×2048) anchor PNG immediately yields a lossless compressed download (01_landing.png, 02_workspace.png, 03_download.png). |
| Interaction restraint | 30 / 30 Zero sign-up, zero popups, and zero ad trackers—opens directly into a millisecond-responsive split-screen comparison workspace. | 28 / 30 Zero mandatory registration, no gating popups, and no artificial countdowns. While display ads are present, they do not disrupt compression and export. |
| Background & reputation | 19.5 / 20 Created and open-sourced by the Google Chrome Web DevRel team as the reference WebAssembly image codec playground. | 18 / 20 Continuously operated since 2012 by independent creators, widely respected for robust integration with standard open-source CLI engines (OxiPNG, ImageMagick, gifsicle). |
| Engineering & privacy | 14.5 / 15 CDP network capture confirms 100% client-side WebAssembly execution (MozJPEG / OxiPNG / WebP / AVIF) with 0 bytes uploaded to any remote server; works offline as a PWA. | 14 / 15 CDP network inspection confirms PNG compression executes locally via WebAssembly (squoosh_oxipng_bg.wasm). Server-side processing runs on temporary caches auto-purged within 1-2 hours. |
| Task quality | 61.6 / 65 Reduces file size by 93.26% (4,137.9 KB → 278.8 KB, 14.84× compression ratio) while preserving PSNR = 37.13 dB and SSIM = 0.9973, with full control over OxiPNG, MozJPEG, WebP, and AVIF encoders (61.6/65) | 57 / 65 Lossless OxiPNG compression reduces 4,137.9 KB to 3,560.8 KB (-13.95%, 1.16× ratio) while preserving flawless 100% pixel fidelity (PSNR = 99.99 dB, SSIM = 1.0) (57.0/65) |
| Deliverable specifications | 20 / 20 Preserves exact 2048×2048 dimensions (unless Resize is toggled by the user) with unrestricted local PNG/JPEG/WebP/AVIF download (20.0/20) | 20 / 20 Preserves native 2048×2048 dimensions and full alpha transparency with zero watermarks (20.0/20) |
| Processing speed | 14 / 15 100% local multi-threaded WebAssembly encoding with 0.0s network upload latency; re-encodes the 2048×2048 anchor in ~0.85s (14.0/15) | 12 / 15 Client-side WebAssembly (OxiPNG) execution takes ~4.0s with zero network upload latency (12.0/15) |
