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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 | imageseoforai.com | aconvert.com | Switch / compare |
|---|---|---|---|
| Image compression | 93/100 2048 × 2048 · PNG | 86/100 2048 × 2048 · PNG | Active task |
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Browse this task →| Criterion | Image SEO for AI Image compression 93/100 Seven-aspect task score Image SEO for AI excelled in the 2026-11-01 benchmark: fully guest-accessible and purely client-side via browser Canvas, reducing a 4.14 MB PNG by 54.7% to 1.87 MB with PSNR of 37.41 dB and SSIM of 0.9975, delivering full-resolution watermark-free PNG with zero server upload overhead. Tested export 2048 × 2048 · PNG Historical test · 2026-11-01 | 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 | Image SEO for AI 100% free client-side image compression and SEO optimization · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free Completely free without registration, up to 100 images per batch (JPEG/PNG/WebP, up to 40 MB each) Batch compression, C2PA/AI tag and GPS removal, SEO renaming, alt text, IPTC/XMP keyword and copyright embedding；Runs purely in client browser; very large batches may depend on local machine memory；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. All features are 100% free with no registration, no watermark, up to 100 images per batch (40MB each), running purely client-side. Cancellation, sources & verification recordCancellation and refund terms unverified Image SEO for AI Official Homepage ↗ · 2026-11-01 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 | Completely free, 40MB per file, up to 100 images per batch | Completely free, 40MB per file limit, up to 10 files per batch |
| Cancellation & refunds | Not verified | Not verified |
| Disclosure of costs & limits | Interface transparently displays parameter settings and guidelines | Compression parameters and instructions clearly disclosed on page |
| Task quality | ||
| Measured fixture results | File reduction: 54.72% · Output size: 1873.8 KB | File reduction: 56.5% · Output size: 1800.1 KB |
| Fixture findings | Sample testing confirms: under default Balanced mode, it preserves 2048x2048 resolution and PNG format with smooth micro-edges, achieving 54.7% compression and a 91.2 overall benchmark rating. | Over 50% size reduction while preserving 2048px resolution and transparency; solid quality and easy to use. |
| Original historical observation | Image SEO for AI compresses images and strips metadata entirely inside browser Canvas; under default Balanced mode it reduces the 4.14 MB anchor by 54.7% to 1.87 MB with SSIM of 0.9975, maintaining great visual fidelity. | 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 | E-commerce sellers and webmasters needing fast, free large-image compression preserving transparency and 2048px resolution | 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 (no-login full-resolution watermark-free direct PNG export) | 2048 x 2048 (Full-resolution unwatermarked PNG) |
| Watermark observation | No watermark | No watermark |
| Batch & API | Supports up to 100 images per batch, up to 40MB each | 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: 6.1s · End-to-end reference: 6.1s | Network-observed server wait: 11.2s · End-to-end reference: 14.7s |
| Date & fixture | 2026-11-01 · 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 | All features available directly without registration or login | All platform features accessible directly without registration or login |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Image SEO for AI (Christophe / Maison Lune) | Aconvert Project (PDFConvertOnline.com) |
| Recorded origin | Not verified | United States |
| Domain history record | Not verified | Development team active since 2000 |
| Background & reputation assessment | Not verified | Not verified |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | No third-party services listed in this record; this is not proof that none exist. | Google AdSense · Google Analytics |
| Engineering & privacy assessment | Not verified | 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 | ||
| Interaction restraint | ||
| Background & reputation | ||
| Engineering & privacy | ||
| Task quality | 58 / 65 Size Reduction: -54.72% (4137.9 KB → 1873.8 KB, 2.21× ratio) · PSNR: 37.41 dB · SSIM: 0.9975 | 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 Clean unwatermarked export (8/8); Export spec: 2048×2048 (no-login full-resolution watermark-free direct PNG export) | 20 / 20 Clean unwatermarked export (8/8); Export spec: 2048 x 2048 (Full-resolution unwatermarked PNG) |
| Processing speed | 14 / 15 Network-observed server wait: 6.1s (API mode: client_side; network upload 0s / end-to-end 6.1s shown for reference only, never penalized) | 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) |
