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Test scope & comparison notes
These are recorded facts, not a unified ranking. Tested tiers and scope are not consistently recorded. Read pricing with its date and timing with its conditions. Privacy observations reflect visible flows and statements, not a security audit.
Cross-task capability coverage across selected products
Each product is scored independently per task edge; switch tasks below while keeping shared products selected| Task edge | ezgif.com | aconvert.com | Switch / compare |
|---|---|---|---|
| Image compression | 91/100 2048 × 2048 · PNG | 86/100 2048 × 2048 · PNG | Active task |
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Browse this task →| Criterion | 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 | Aconvert Image compression 86/100 Seven-aspect task score 100% free with no login, reducing the 4.14 MB anchor by 56.5% to 1.80 MB at PSNR 36.1 dB with full-resolution unwatermarked output. Tested export 2048 × 2048 · PNG Historical test · 2026-11-01 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | 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 ↗ | Aconvert 100% free file conversion and compression service · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free 100% free without login, 40MB per file, up to 10 files per batch Full access to multi-format conversion and compression across documents, media, eBooks, and archives；40MB per-file limit, 10 files per batch, display ads present；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. All conversion and compression features are 100% free with ad and voluntary donation support; 40MB per-file limit (up to 10 files per batch) with zero paid plans or paywalls. Cancellation, sources & verification recordCancellation and refund terms unverified Aconvert Official Homepage ↗ · 2026-11-01 Capture 1 ↗ Aconvert About and Free Model ↗ · 2026-11-01 Capture 1 ↗ |
| Free & trial allowance on the test date | Unlimited free usage, max 100MB per file | Completely free, 40MB per file limit, up to 10 files per batch |
| Cancellation & refunds | Not verified | Not verified |
| Disclosure of costs & limits | Tool limits and lossless optimization options clearly shown on upload header | Compression parameters and instructions clearly disclosed on page |
| Task quality | ||
| Measured fixture results | File reduction: 13.95% · Output size: 3560.8 KB | File reduction: 56.5% · Output size: 1800.1 KB |
| Fixture findings | On-device WASM lossless optimization reduced file size by ~14% with flawless PSNR and SSIM fidelity; requires a few seconds of local computation. | Over 50% size reduction while preserving 2048px resolution and transparency; solid quality and easy to use. |
| Original historical observation | 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). | Aconvert processes compression on cloud servers, reducing the 4.14 MB anchor by 56.5% to 1.80 MB under default Lossy 80 while maintaining SSIM 0.9966 and preserving micro-textures. |
| Suitable uses · historical assessment | Users and developers who require mathematical pixel fidelity (PSNR = 99.99 dB, SSIM = 1.0) while slimming down oversized PNG assets quickly without registration | Users and webmasters needing fast free image compression while preserving transparency and 2048px original resolution |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 2048 × 2048 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (native resolution lossless PNG, zero watermarks) | 2048 x 2048 (Full-resolution unwatermarked PNG) |
| Watermark observation | Watermark-free | No watermark |
| Batch & API | Single or multiple file upload direct in web interface | Supports up to 10 files concurrent upload with multi-format conversion |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 4s · End-to-end reference: 4s | Network-observed server wait: 11.2s · End-to-end reference: 14.7s |
| Date & fixture | 2026-10-31 · anchor_compress_v1 · US-West (California, AS2914) | 2026-11-01 · 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 | No login required (anonymous utility) | All platform features accessible directly without registration or login |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero mandatory registration, no gating popups, and no artificial countdowns. While display ads are present, they do not disrupt compression and export. | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Ezgif.com | Aconvert Project (PDFConvertOnline.com) |
| Recorded origin | Latvia | United States |
| Domain history record | 2012–Present (14 years online) | Development team active since 2000 |
| Background & reputation assessment | Continuously operated since 2012 by independent creators, widely respected for robust integration with standard open-source CLI engines (OxiPNG, ImageMagick, gifsicle). | Not verified |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Google AdSense · Google Analytics | Google AdSense · Google Analytics |
| Engineering & privacy assessment | 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. | Not verified |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 2 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 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 | 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 | 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 / 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 | 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) | 56 / 65 Size Reduction: -56.5% (4137.9 KB → 1800.1 KB, 2.3× ratio) · PSNR: 36.1 dB · SSIM: 0.9966 |
| Deliverable specifications | 20 / 20 Preserves native 2048×2048 dimensions and full alpha transparency with zero watermarks (20.0/20) | 20 / 20 Clean unwatermarked export (8/8); Export spec: 2048 x 2048 (Full-resolution unwatermarked PNG) |
| Processing speed | 12 / 15 Client-side WebAssembly (OxiPNG) execution takes ~4.0s with zero network upload latency (12.0/15) | 8.5 / 15 Network-observed server wait: 11.2s (API mode: cloud_server; network upload 3.5s / end-to-end 14.7s shown for reference only, never penalized) |
