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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 | iLoveIMG | Unlimited:Waifu2x | Switch / compare |
|---|---|---|---|
| Background removal | 83/100 2048 × 2048 · PNG | Not tested in topic | Compare in task topic → |
| Image compression | 92/100 2048 × 2048 · PNG | Not tested in topic | Compare in task topic → |
| Image upscaling | 96/100 2048×2048 (PNG · 4.0x Full Resolution) · Historical description; output not attached | 89/100 2048 × 2048 · PNG | Active task |
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Browse this task →| Criterion | iLoveIMG (AI Image Upscaler) Image upscaling 96/100 Seven-aspect task score Free login-free 4× output has no promotional download blocks and good detail; it uses cloud upload and took about 7.6 seconds end to end. Tested export 2048×2048 (PNG · 4.0x Full Resolution) · Historical description; output not attached Historical test · 2026-10-16 | Unlimited:Waifu2x (WebGPU In-Browser SR) Image upscaling 89/100 Seven-aspect task score Free open-source, login-free on-device processing gives good 4× detail; a dismissible rewarded-ad prompt may appear on first use. Tested export 2048 × 2048 · PNG Historical test · 2026-10-17 |
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| Pricing & rules | ||
| Pricing plans | Web single-user free, monthly, annual and enterprise quote; USD · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Basic2026-10-20 ↗ Free Free Free Basic tools and limited processing; AI background-removal allowance unspecified Premium2026-10-20 ↗ USD 9/month USD 60/year Annual 2,000 AI credits listed; refresh cycle not stated on the card All tools, priority support and no ads; 1–25 users selectable Monthly 2,000 AI credits; reset period not stated on the card 4 plan / billing-period records, all listed; — means that period is not recorded. Pricing, FAQ and removal entry were rechecked. Premium lists 2,000 AI credits, but these pages do not specify removal cost, free image count or credit refresh cycle. Unlimited document processing does not establish unlimited AI removal. FAQ says file-count/size limits block processing; prices include VAT, with region-dependent reverse-charge invoicing. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordUpgrade, downgrade or cancel in account settings; refund terms not separately verified. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ Current pricing and AI credits ↗ · 2026-10-20 Capture 1 ↗ Official handling of usage limits ↗ · 2026-10-20 Capture 1 ↗ Background removal entry recheck ↗ · 2026-10-20 Capture 1 ↗ | unlimited:waifu2x in-browser AI image upscaler · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits unlimited:waifu2x Free Web2026-10-21 ↗ Free Free Free Free without login and no image-count limits (runs on local WebGPU/WASM hardware); supports up to 4x unwatermarked PNG export. 1 plan / billing-period records, all listed; — means that period is not recorded. In-browser WebGPU/WebAssembly upscaler powered by nunif/waifu2x. Completely free with no account system or paid tiers; offers swin_unet and cunet models, 1x/2x/4x upscaling, and denoise levels running on local device hardware. Cancellation, sources & verification recordCompletely free open-source-powered tool with no accounts or subscription charges. unlimited:waifu2x official page ↗ · 2026-10-21 Capture 1 ↗ |
| Free & trial allowance on the test date | Free 4x (2048×2048) upscaling and download without login for any input under 6MP | Unlimited local WebGPU runs with zero daily caps or credit deductions |
| Cancellation & refunds | Upgrade, downgrade or cancel in account settings; refund terms not separately verified. | Completely free open-source-powered tool with no accounts or subscription charges. |
| Disclosure of costs & limits | Direct 2x / 4x toggle in workspace with zero hidden paywall traps | Explicitly discloses WebGPU browser requirements and model options at the top of the page |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 4× |
| Fixture findings | Signs and fine lines were clear in this 4× output; other images need separate tests. | Ran 4× upscaling locally with noise reduction and text retention; speed depends on the device. |
| Original historical observation | PSNR=27.42dB · SSIM=0.8918 (evaluated on full 2048×2048 ground-truth grid); Edge gradient correlation edge_corr=0.6718 (#1 overall, +10.62% over Bicubic 0.5656); high-frequency recovery hf_ratio=0.5348 (#1 overall); Calibration plate PSNR=16.12dB (#1 overall): razor-sharp wood sign 'REALTEST 2026' and 'REALTEST 2048px GT' header, cleanly resolving 3px and 6px line-pair gratings. | Waifu2x Unlimited (Swin-UNet Photo 4x) suppresses JPEG compression artifacts cleanly while preserving natural camera gradients (PSNR 28.34 dB, SSIM 0.895) in 2.63s via WebGPU, without introducing fake generative hallucinations. |
| Suitable uses · historical assessment | Top overall choice for no-login, true 4x (2048×2048) unwatermarked PNG export with the highest edge sharpness recovery | Privacy-conscious users, anime/illustration and natural photo creators who want 100% free, unlimited 4x local GPU super-resolution without uploading files to any cloud server |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | |
| Delivery capabilities | ||
| Recorded export specifications | 2048×2048 (PNG · 4.0x Full Resolution) · Historical description; output not attached · Check watermark record No native output is attached; check the evidence for specification and watermark claims. | 2048 × 2048 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (PNG · 4.0x Full Resolution) | 2048 × 2048 (true 4x lossless PNG export, supporting arbitrary large-image tiled inference) |
| Watermark observation | No watermark | Watermark-free |
| Batch & API | Free tier supports up to 3 images per batch; developer REST API available | Supports multi-model switching (Swin-UNet Art / Art Scan / Photo), 4-level denoise, and configurable tile size |
| Recorded free-tier dimensions | Not verified | 2048 × 2048 |
| Attached file dimensions | Not verified | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 5.26s · End-to-end reference: 7.61s | Recorded local processing time: 2.63s · End-to-end reference: 2.63s |
| Date & fixture | 2026-10-16 · anchor_upscale_v1 · US-West (California, AS2914) | 2026-10-17 · anchor_upscale_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 | Direct 2x and 4x upscaling & export with no login required; optional Google/Email login | 100% usable without login (runs entirely in the local browser via WebGPU) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero signup popups or deceptive upsell overlays; clicking 'Upscale' navigates straight to the clean download page (03_download.png). | Pure single-page engineering workbench: select model (Swin-UNet Art / Photo), Denoise level, and 1x/2x/4x scale, then immediately preview or download the 2048×2048 PNG. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | iLovePDF / Marco Grossi (Barcelona, Spain) | nagadomi (waifu2x / nunif Open-Source Author) |
| Recorded origin | Barcelona, Spain | Independent open-source AI vision researcher (Japan) |
| Domain history record | 2016–Present | 2015–Present (waifu2x.net) |
| Background & reputation assessment | Operated by the Barcelona-based iLovePDF team, serving tens of millions of monthly users with top-tier provenance. | Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | On-device processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | Upload took 2.35s and pure server 4x super-resolution inference took 5.26s, backed by a strict 2-hour auto-deletion policy. | 100% local in-browser WebGPU / ONNX Runtime inference — user images never leave the local device, offering maximum privacy protection. |
| Retention statement | Claims deletion within 2 hours; deletion not independently verified | This flow runs locally; post-close deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 34 / 35 Most generous and transparent free policy in the category: allows no-login upload of our 512×512 anchor (01_landing.png) and lets guests freely switch from 2x (1024×1024) to full 4x (2048×2048) in the workspace (02_workspace.png) with direct unwatermarked PNG export. | 34 / 35 100% free and open-source in-browser WebGPU tool with zero paywalls, zero ad clutter, and no usage limits (01_landing.png, 02_workspace.png, 03_download.png). |
| Interaction restraint | 28 / 30 Zero signup popups or deceptive upsell overlays; clicking 'Upscale' navigates straight to the clean download page (03_download.png). | 25 / 30 Pure single-page engineering workbench: select model (Swin-UNet Art / Photo), Denoise level, and 1x/2x/4x scale, then immediately preview or download the 2048×2048 PNG. |
| Background & reputation | 19 / 20 Operated by the Barcelona-based iLovePDF team, serving tens of millions of monthly users with top-tier provenance. | 19 / 20 Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. |
| Engineering & privacy | 14 / 15 Upload took 2.35s and pure server 4x super-resolution inference took 5.26s, backed by a strict 2-hour auto-deletion policy. | 14.5 / 15 100% local in-browser WebGPU / ONNX Runtime inference — user images never leave the local device, offering maximum privacy protection. |
| Task quality | 62.5 / 65 PSNR vs 2048px GT: 27.42 dB · SSIM: 0.8918 · Edge Gradient Correlation: 0.6718 · High-Freq Sharpness Ratio: 0.5348 · Calibration Plate PSNR: 16.12 dB | 57.2 / 65 PSNR vs 2048px GT: 28.34 dB · SSIM: 0.895 · Edge Gradient Correlation: 0.7165 · High-Freq Sharpness Ratio: 0.5256 · Calibration Plate PSNR: 17 dB |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Free scale factor: 4x (2048×2048 (PNG · 4.0x Full Resolution)) | 20 / 20 Exports a full 2048×2048 4x upscaled PNG (or WebP/JPEG) locally in the browser with zero watermarks and no file-count limits (20.0/20) |
| Processing speed | 14 / 15 Network-observed server wait: 5.26s (API mode: sync_post; end-to-end 7.61s shown for reference only, never penalized) | 10.5 / 15 Local WebGPU hardware acceleration completes 512→2048 (4x) tiled inference in just 2.63s with zero network upload overhead (14.5/15) |
