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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 | Unlimited:Waifu2x | SnapEdit | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 70/100 1280 × 1280 · PNG | Compare in task topic → |
| Image upscaling | 89/100 2048 × 2048 · PNG | 77/100 PNG · Output attached | Active task |
| Object removal | Not tested in topic | 71/100 1280×1280 (Small tier, with subtle bottom-right watermark) · Historical description; output not attached | Compare in task topic → |
| Photo restoration | Not tested in topic | 85/100 JPEG · Output attached | Compare in task topic → |
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Browse this task →| Criterion | 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 | SnapEdit (AI Photo Enhancer) Image upscaling 77/100 Seven-aspect task score Login-free trials and model switching are convenient, but menu dimensions mismatch the export; this result was only 2× with a watermark, with clean HD requiring Pro. Tested export PNG · Output attached Historical test · 2026-10-17 |
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| Pricing & rules | ||
| Pricing plans | 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 ↗ | Web personal free, monthly/annual and per-seat Business; excludes API · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Standard2026-10-20 ↗ USD 10/month USD 72/year Annual 4,800 credits/year; 1 credit per background removal No watermark; up to 5600px; batch processing；Requires sign-in before checkout; includes a 3-day free trial, then bills USD 72/year ($6/month equivalent) via Paddle Rules [1]Monthly 400 credits/month; 1 credit per removal No watermark, up to 5600px, batch processing PRO2026-10-20 ↗ USD 20/month USD 144/year Annual 18,000 credits/year; 1 credit per background removal No watermark; up to 5600px; batch processing；Requires sign-in before checkout; includes a 3-day free trial, then bills USD 144/year ($12/month equivalent) via Paddle Rules [1]Monthly 1,500 credits/month; 1 credit per removal No watermark, up to 5600px, batch processing Business2026-10-20 ↗ USD 15/month USD 120/year Monthly 1,000 credits/month/seat; shared credits, assets and automated workflows Annual 12,000 credits/year/seat; shared credits, assets and automated workflows 7 plan / billing-period records, all listed; — means that period is not recorded. Personal annual checkout opens a Paddle modal after login: Standard annual includes a 3-day free trial followed by USD 72/year ($6/month equivalent), and PRO annual includes a 3-day free trial followed by USD 144/year ($12/month equivalent). Business explicitly lists $120/seat/year. The free card claims no ads but conflicts with its comparison table; ad-free use is not promised. Cancellation, sources & verification recordCancel anytime; refund eligibility unverified. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ Login gate on personal annual purchase entry ↗ · 2026-10-20 Capture 1 ↗ Personal annual Paddle checkout summary (verified after sign-in) ↗ · 2026-10-21 Capture 1 ↗ |
| Free & trial allowance on the test date | Unlimited local WebGPU runs with zero daily caps or credit deductions | 5 free coins daily; free tier exports Small tier (measured at 1024×1024 2.0x) |
| Cancellation & refunds | Completely free open-source-powered tool with no accounts or subscription charges. | Cancel anytime; refund eligibility unverified. |
| Disclosure of costs & limits | Explicitly discloses WebGPU browser requirements and model options at the top of the page | Landing page states 5 free daily coins without sign-up; Download menu labels Free vs PRO resolution tiers |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 2× |
| Fixture findings | Ran 4× upscaling locally with noise reduction and text retention; speed depends on the device. | Contours and text were enhanced; the free result included a translucent watermark. |
| Original historical observation | 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. | Carved wooden text "REALTEST 2026" and brass robot 5-finger joints are crisp and well-defined, with a semi-transparent SnapEdit watermark overlaid on the bottom-right calibration plate. |
| Suitable uses · historical assessment | 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 | Quick portrait deblurring and 2x anime/illustration preview enhancement |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | PNG · Output attached · Check watermark record |
| Historical specification note · not an official maximum | 2048 × 2048 (true 4x lossless PNG export, supporting arbitrary large-image tiled inference) | 1024×1024 (2.0x upscale, 143 KB) |
| Watermark observation | Watermark-free | Semi-transparent SnapEdit watermark in bottom-right corner (removing watermark requires PRO) |
| Batch & API | Supports multi-model switching (Swin-UNet Art / Art Scan / Photo), 4-level denoise, and configurable tile size | Supports batch upload & processing (PRO) |
| Recorded free-tier dimensions | 2048 × 2048 | 1024 × 1024 |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 2.63s · End-to-end reference: 2.63s | Network-observed server wait: 3.36s · End-to-end reference: 4.21s |
| Date & fixture | 2026-10-17 · 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 | 100% usable without login (runs entirely in the local browser via WebGPU) | No login required (5 free daily coins, 2 coins per upscale) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | 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. | Zero-popup no-login entry into the workspace with 4 enhancement modes (Standard / Art & Illustration / Restore / Colorize). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | nagadomi (waifu2x / nunif Open-Source Author) | SilverAI (SnapEdit Team) |
| Recorded origin | Independent open-source AI vision researcher (Japan) | Vietnam / Singapore (SilverAI) |
| Domain history record | 2015–Present (waifu2x.net) | snapedit.app (globally recognized AI photo restoration & editing platform) |
| Background & reputation assessment | Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. | Developed by SilverAI, creator of the globally popular SnapEdit AI photo enhancement and restoration suite. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | 100% local in-browser WebGPU / ONNX Runtime inference — user images never leave the local device, offering maximum privacy protection. | Completes 2x super-resolution via be-prod-web.snapedit.app/api/enhance/v1 in 3.36s pure server time. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Explicit retention period unconfirmed; inspect policy record |
| Evaluation basis | ||
| Pricing transparency | 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). | 22 / 35 Landing hero states "Try it free with 5 credits a day, no sign-up needed" (01_landing.png); uploading the 512×512 test image automatically spends 2 coins to complete enhancement, and the Download menu lists Small (labeled 1280×1280) as free, exporting a 1024×1024 (2.0x) JPG with a semi-transparent bottom-right SnapEdit watermark while 1920p and unwatermarked 4× Original require PRO (03_download.png). |
| Interaction restraint | 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. | 25 / 30 Zero-popup no-login entry into the workspace with 4 enhancement modes (Standard / Art & Illustration / Restore / Colorize). |
| Background & reputation | 19 / 20 Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. | 17 / 20 Developed by SilverAI, creator of the globally popular SnapEdit AI photo enhancement and restoration suite. |
| Engineering & privacy | 14.5 / 15 100% local in-browser WebGPU / ONNX Runtime inference — user images never leave the local device, offering maximum privacy protection. | 14 / 15 Completes 2x super-resolution via be-prod-web.snapedit.app/api/enhance/v1 in 3.36s pure server time. |
| Task quality | 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 | 50.7 / 65 PSNR vs 2048px GT: 26.87 dB · SSIM: 0.8844 · Edge Gradient Correlation: 0.6071 · High-Freq Sharpness Ratio: 0.4386 · Calibration Plate PSNR: 15.31 dB |
| Deliverable specifications | 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) | 11 / 20 No free unwatermarked export (0/8); Free scale factor: 2x (1024×1024 (2.0x upscale, 143 KB)) |
| Processing speed | 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) | 14.2 / 15 Network-observed server wait: 3.36s (API mode: sync_post; end-to-end 4.21s shown for reference only, never penalized) |
