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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 | VanceAI | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 84/100 1673 × 1673 · PNG | Compare in task topic → |
| Image upscaling | 89/100 2048 × 2048 · PNG | 88/100 PNG · Output attached | Active task |
| Photo restoration | Not tested in topic | 77/100 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 | VanceAI Image Upscaler (Picture Studio) Image upscaling 88/100 Seven-aspect task score Login-free trials deliver 4× watermark-free output with processing and save credit notices; credits are limited and files remain for seven days unless deleted. Tested export PNG · Output attached Historical test · 2026-10-17 |
|---|---|---|
| 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 free, monthly, annual and pay-as-you-go; desktop and API separate · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Starter2026-10-20 ↗ USD 20/month USD 180/year Annual 260 credits/month Monthly 260 credits/month including a 30% bonus; removal 1 credit/image Popular2026-10-20 ↗ USD 40/month USD 360/year Annual 650 credits/month Monthly 650 credits/month including a 30% bonus; removal 1 credit/image Creator2026-10-20 ↗ USD 60/month USD 540/year Annual 1,300 credits/month Monthly 1300 credits/month including a 30% bonus; removal 1 credit/image Studio2026-10-20 ↗ USD 100/month USD 900/year Annual 2,600 credits/month Monthly 2600 credits/month including a 30% bonus; removal 1 credit/image Starter2026-10-20 ↗ USD 40 · one-time payment Usage / one-time Usage / one-time 200 credits; removal 1 credit/image Rules [1] Popular2026-10-20 ↗ USD 80 · one-time payment Usage / one-time Usage / one-time 500 credits; removal 1 credit/image Rules [1] Creator2026-10-20 ↗ USD 120 · one-time payment Usage / one-time Usage / one-time 1000 credits; removal 1 credit/image Rules [1] Studio2026-10-20 ↗ USD 200 · one-time payment Usage / one-time Usage / one-time 2000 credits; removal 1 credit/image Rules [1] 13 plan / billing-period records, all listed; — means that period is not recorded. Subscription credits include the current 30% bonus and roll over while subscribed, expiring when the subscription ends. Paid image inputs are limited to 10MB, 34MP and an 8000px long edge. Cancellation, sources & verification recordCancel anytime; remaining credits last until period end. A 7-day money-back guarantee is advertised, subject to terms. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ |
| Free & trial allowance on the test date | Unlimited local WebGPU runs with zero daily caps or credit deductions | New Picture Studio grants anonymous visitors 10 free trial credits (10/10 Free trial): 4x upscaling costs 1 credit and saving the unwatermarked 2048px image costs 2 credits (~3 full 2048px exports free) |
| Cancellation & refunds | Completely free open-source-powered tool with no accounts or subscription charges. | Cancel anytime; remaining credits last until period end. A 7-day money-back guarantee is advertised, subject to terms. |
| Disclosure of costs & limits | Explicitly discloses WebGPU browser requirements and model options at the top of the page | Live credit counter in the top bar (10/10 → 8/10) plus itemized credit confirmation modal before every run |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 4× |
| Fixture findings | Ran 4× upscaling locally with noise reduction and text retention; speed depends on the device. | Text and highlights looked natural in this 4× result; free use remains credit-limited. |
| 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. | VanceAI 4x super-resolution achieves PSNR = 26.86 dB and SSIM = 0.9717 on our 512→2048 restoration benchmark (03_download.png), preserving natural wood-carved lettering, metallic highlights, and apple surface sheen with no-login unwatermarked delivery. |
| 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 | Designers and e-commerce users seeking no-login unwatermarked 4x/8x super-resolution combined with sharpening, denoising, or old-photo restoration |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | PNG · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 2048 × 2048 (true 4x lossless PNG export, supporting arbitrary large-image tiled inference) | 2048 × 2048 (4x upscaled unwatermarked JPG) |
| Watermark observation | Watermark-free | No watermark (exports clean image directly after deducting trial credits) |
| Batch & API | Supports multi-model switching (Swin-UNet Art / Art Scan / Photo), 4-level denoise, and configurable tile size | Built-in Batch Processing Review queue, commercial REST API, and Windows local desktop client |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| 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: 6.4s · End-to-end reference: 7.9s |
| 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) | 10 Free trial credits granted without login; also supports account login and PC desktop client |
| 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. | Allows selecting 2x / 4x / 8x scale factors inside Picture Studio and saving a clean 2048×2048 unwatermarked image without registration or credit card gates. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | nagadomi (waifu2x / nunif Open-Source Author) | VanceAI Technology |
| Recorded origin | Independent open-source AI vision researcher (Japan) | International R&D Team (VanceAI) |
| Domain history record | 2015–Present (waifu2x.net) | 2020–Present |
| Background & reputation assessment | Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. | Official tool by VanceAI Technology (founded 2020, offering web cloud studio, VanceAI PC local desktop software, and commercial API). |
| 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. | Clearly states "Files are saved for 7 days. Please download them in time" in the bottom-left corner with a one-click Delete All button, delivering files via signed Cloudflare R2 links. |
| 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). | 32 / 35 Anonymous visitors entering the new workspace (vanceai.com/workspace-new/) receive "10/10 Free trial" credits; clicking Process shows an upfront "Confirm batch processing (BALANCE 10 credits → AFTER 9 credits)" modal (02_workspace.png), and saving the 2048×2048 unwatermarked output clearly notes "Saved result · 2 credits" (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. | 28 / 30 Allows selecting 2x / 4x / 8x scale factors inside Picture Studio and saving a clean 2048×2048 unwatermarked image without registration or credit card gates. |
| Background & reputation | 19 / 20 Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. | 18.5 / 20 Official tool by VanceAI Technology (founded 2020, offering web cloud studio, VanceAI PC local desktop software, and commercial API). |
| Engineering & privacy | 14.5 / 15 100% local in-browser WebGPU / ONNX Runtime inference — user images never leave the local device, offering maximum privacy protection. | 13.5 / 15 Clearly states "Files are saved for 7 days. Please download them in time" in the bottom-left corner with a one-click Delete All button, delivering files via signed Cloudflare R2 links. |
| 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 | 55.5 / 65 PSNR vs 2048px GT: 26.86 dB · SSIM: 0.9717 · Edge Gradient Correlation: 0.4557 · High-Freq Sharpness Ratio: 0.5243 · Calibration Plate PSNR: 20.63 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) | 19 / 20 No free unwatermarked export (0/8); Free scale factor: 4x (2048 × 2048 (4x upscaled unwatermarked JPG)) |
| 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) | 12 / 15 Network-observed server wait: 6.4s (API mode: cloud_gpu_r2; end-to-end 7.9s shown for reference only, never penalized) |
