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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 | Upscale.media | Switch / compare |
|---|---|---|---|
| Image upscaling | 89/100 2048 × 2048 · PNG | 89/100 1024×1024 (PNG · 2.0x Super Resolution) · Historical description; output not attached | Active task |
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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 | Upscale.media (by PixelBin) Image upscaling 89/100 Seven-aspect task score Free 2× watermark-free downloads are smooth with clear paid tiers and good detail; 4× and 8× cost extra, alongside ads and product promotions. Tested export 1024×1024 (PNG · 2.0x Super Resolution) · Historical description; output not attached Historical test · 2026-10-16 |
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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 ↗ | Upscale.media free, monthly, annual, one-time credit packs, and enterprise plans; USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Plan2026-10-21 ↗ Free Free Free 3 free credits and 3 free downloads per month (1 credit per upscale conversion). Monthly 200 Credits2026-10-21 ↗ USD 11.99/month — Monthly 200 credits/month (1 credit per conversion; unused monthly credits expire at month-end). Monthly 600 Credits2026-10-21 ↗ USD 17.99/month — Monthly 600 credits/month (1 credit per conversion; unused monthly credits expire at month-end). Monthly 1,000 Credits2026-10-21 ↗ USD 23.99/month — Monthly 1,000 credits/month (1 credit per conversion; unused monthly credits expire at month-end). Monthly 2,500 Credits2026-10-21 ↗ USD 34.99/month — Monthly 2,500 credits/month (1 credit per conversion; unused monthly credits expire at month-end). Annual 3,000 Credits2026-10-21 ↗ — USD 49.99/year Annual 3,000 credits/year (billed annually at USD 49.99/year). Annual 7,500 Credits2026-10-21 ↗ — USD 69.99/year Annual 7,500 credits/year (billed annually at USD 69.99/year). Annual 15,000 Credits2026-10-21 ↗ — USD 99.99/year Annual 15,000 credits/year (billed annually at USD 99.99/year). Annual 30,000 Credits2026-10-21 ↗ — USD 119.99/year Annual 30,000 credits/year (billed annually at USD 119.99/year). One-Time 60 Credits2026-10-21 ↗ USD 7.99 · one-time payment Usage / one-time Usage / one-time 60 credits (1 credit per conversion). Rules [1] One-Time 125 Credits2026-10-21 ↗ USD 11.99 · one-time payment Usage / one-time Usage / one-time 125 credits (1 credit per conversion). Rules [1] One-Time 500 Credits2026-10-21 ↗ USD 29.99 · one-time payment Usage / one-time Usage / one-time 500 credits (1 credit per conversion). Rules [1] One-Time 1,200 Credits2026-10-21 ↗ USD 54.99 · one-time payment Usage / one-time Usage / one-time 1,200 credits (1 credit per conversion). Rules [1] One-Time 2,500 Credits2026-10-21 ↗ USD 84.99 · one-time payment Usage / one-time Usage / one-time 2,500 credits (1 credit per conversion). Rules [1] Enterprise2026-10-21 ↗ Contact sales Quoted Quoted Custom volume and API solutions via sales@pixelbin.io. 15 plan / billing-period records, all listed; — means that period is not recorded. The official pricing page lists the Free plan (3 free credits and 3 free downloads per month; 1 conversion = 1 credit), four monthly subscriptions (200 / 600 / 1,000 / 2,500 credits/month), four annual subscriptions (3,000 / 7,500 / 15,000 / 30,000 credits/year), and five one-time credit packs valid for 1 year (60 / 125 / 500 / 1,200 / 2,500 credits). Cancellation, sources & verification recordSubscriptions auto-renew and can be cancelled anytime; the pricing page explicitly states that refunds are not provided due to AI compute costs, and one-time credit packs are valid for 1 year and non-refundable. Upscale.media official annual, monthly, and one-time credit pack pricing page ↗ · 2026-10-21 Capture 1 ↗ · Capture 2 ↗ |
| Free & trial allowance on the test date | Unlimited local WebGPU runs with zero daily caps or credit deductions | 3 free no-login 2x (1024×1024) unwatermarked upscales; 4x and 8x display a Crown icon requiring a PixelBin subscription |
| Cancellation & refunds | Completely free open-source-powered tool with no accounts or subscription charges. | Subscriptions auto-renew and can be cancelled anytime; the pricing page explicitly states that refunds are not provided due to AI compute costs, and one-time credit packs are valid for 1 year and non-refundable. |
| Disclosure of costs & limits | Explicitly discloses WebGPU browser requirements and model options at the top of the page | Crown icons on 4x/8x buttons clearly indicate paid tiers upfront |
| 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. | The tested 2× output was watermark-free with some edge recovery, at 1024px. |
| 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. | PSNR=27.57dB · SSIM=0.8918 (2x 1024×1024 unwatermarked PNG); ranks #1 in PSNR and SSIM among all 2x free upscalers with edge_corr=0.6496, hf_ratio=0.5289, and a blazing 1.74s Network-observed server wait. |
| 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 | Everyday office and e-commerce users seeking instant 1.7s no-login 2x lossless super-resolution |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | |
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 1024×1024 (PNG · 2.0x Super Resolution) · Historical description; output not attached · Check watermark record No native output is attached; check the evidence for specification and watermark claims. |
| Historical specification note · not an official maximum | 2048 × 2048 (true 4x lossless PNG export, supporting arbitrary large-image tiled inference) | 1024×1024 (2.0x · Free without login; 4x/8x require PixelBin paid plan) |
| Watermark observation | Watermark-free | 100% Watermark-Free |
| Batch & API | Supports multi-model switching (Swin-UNet Art / Art Scan / Photo), 4-level denoise, and configurable tile size | Bulk transformation, real-time URL super-resolution, and REST API via PixelBin.io |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| 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: 1.74s · End-to-end reference: 3.54s |
| Date & fixture | 2026-10-17 · anchor_upscale_v1 · US-West (California, AS2914) | 2026-10-16 · 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 for 2x; optional sign-in via console.pixelbin.io |
| 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. | Smooth no-login 2x workflow; displays standard banner ads and a PixelBin promotion bar without obstructing the download button. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | nagadomi (waifu2x / nunif Open-Source Author) | PixelBin.io / Shopsense Retail Technologies Ltd. (Reliance Retail) |
| Recorded origin | Independent open-source AI vision researcher (Japan) | Mumbai, India |
| Domain history record | 2015–Present (waifu2x.net) | 2021–Present |
| Background & reputation assessment | Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. | Operated by Shopsense Retail Technologies Ltd. (PixelBin.io / Reliance Retail subsidiary, Mumbai, India—the same enterprise cloud behind Erase.bg), holding SOC 2, ISO 27001, and GDPR certifications. |
| 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. | Backed by PixelBin's `delivery.pixelbin.io/predictions/outputs/1d/sr/upscaleRestricted/` edge pipeline with an explicit 24-hour (`1d`) auto-expiring storage bucket. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 24 hours; deletion not independently verified |
| 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). | 31 / 35 Anonymous guests uploading an image on the landing page (Screenshot ①) receive a 2x (1024×1024) super-resolution output in 1.74s and can directly download a 100% watermark-free PNG (Screenshot ②); 4x and 8x buttons clearly display a Crown icon indicating a paid upgrade (Screenshot ③). |
| 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. | 24 / 30 Smooth no-login 2x workflow; displays standard banner ads and a PixelBin promotion bar without obstructing the download button. |
| 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 Operated by Shopsense Retail Technologies Ltd. (PixelBin.io / Reliance Retail subsidiary, Mumbai, India—the same enterprise cloud behind Erase.bg), holding SOC 2, ISO 27001, and GDPR certifications. |
| 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 Backed by PixelBin's `delivery.pixelbin.io/predictions/outputs/1d/sr/upscaleRestricted/` edge pipeline with an explicit 24-hour (`1d`) auto-expiring storage bucket. |
| 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 | 57.5 / 65 PSNR vs 2048px GT: 27.57 dB · SSIM: 0.8918 · Edge Gradient Correlation: 0.6496 · High-Freq Sharpness Ratio: 0.5289 · Calibration Plate PSNR: 15.96 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) | 18 / 20 No free unwatermarked export (0/8); Free scale factor: 2x (1024×1024 (2.0x · Free without login; 4x/8x require PixelBin paid plan)) |
| 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) | 14.5 / 15 Network-observed server wait: 1.74s (API mode: sync_post; end-to-end 3.54s shown for reference only, never penalized) |
