See your options side by side
Choose one task and 2–4 tools. Compare pricing, output, test results and trust.
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 | DeWatermark | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 76/100 1280 × 1280 · PNG | Compare in task topic → |
| Image upscaling | 89/100 2048 × 2048 · PNG | 81/100 1024 × 1024 · PNG | Active task |
| Object removal | Not tested in topic | 74/100 1280 × 1280 · PNG | Compare in task topic → |
Select at least 2 tools to compare
You can also filter a task page first, then compare your shortlist.
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 | DeWatermark Image Enhancer (AI Upscaler) Image upscaling 81/100 Seven-aspect task score Login-free 2× output is clean and watermark-free with clear tiers and credit costs; 4× needs Pro rather than free access. Tested export 1024 × 1024 · PNG 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 ↗ | Basic web removal and related Pro/credit offers · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Basic background removal2026-10-20 ↗ Free Free Free Feature page describes free basic removal without watermarks; input up to 5MB Pricing card says 3 daily credits, FAQ says 2; these describe watermark-service credits Pro Pack 12K2026-10-20 ↗ — USD 120/year Annual Selected tier: 12,000 credits; credit table concerns watermark processing Removal feature page lists HD and batch under Pro; input up to 10MB；Unused credits expire at membership end; no automatic renewal 100 credits2026-10-20 ↗ USD 7 · one-time payment Usage / one-time Usage / one-time 100 cross-tool credits; removal cost unspecified Rules [1] 500 credits2026-10-20 ↗ USD 18 · one-time payment Usage / one-time Usage / one-time 500 cross-tool credits; removal cost unspecified Rules [1] 1,000 credits2026-10-20 ↗ USD 25 · one-time payment Usage / one-time Usage / one-time 1,000 cross-tool credits; removal cost unspecified Rules [1] 5,000 credits2026-10-20 ↗ USD 80 · one-time payment Usage / one-time Usage / one-time 5,000 cross-tool credits; removal cost unspecified Rules [1] 10,000 credits2026-10-20 ↗ USD 120 · one-time payment Usage / one-time Usage / one-time 10,000 cross-tool credits; removal cost unspecified Rules [1] 25,000 credits2026-10-20 ↗ USD 250 · one-time payment Usage / one-time Usage / one-time 25,000 cross-tool credits; removal cost unspecified Rules [1] 50,000 credits2026-10-20 ↗ USD 450 · one-time payment Usage / one-time Usage / one-time 50,000 cross-tool credits; removal cost unspecified Rules [1] 100,000 credits2026-10-20 ↗ USD 800 · one-time payment Usage / one-time Usage / one-time 100,000 cross-tool credits; removal cost unspecified Rules [1] 18 plan / billing-period records, all listed; — means that period is not recorded. All four monthly/annual volumes are verified using purchase-button totals (6,000 annual credits cost $90, despite a rounded $8 monthly label). The free card states 3 daily credits but other free statements conflict, so a single free allowance is unconfirmed. The 1/3-credit rules concern watermark removal, not a separately stated background-removal rate. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordNo automatic renewal; the FAQ states no refund policy, with support available for payment issues. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ All Pro volumes and billing periods ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ · Capture 5 ↗ · Capture 6 ↗ · Capture 7 ↗ · Capture 8 ↗ |
| Free & trial allowance on the test date | Unlimited local WebGPU runs with zero daily caps or credit deductions | Free anonymous 2X upscaling (up to 2800px) and unwatermarked 1024×1024 export; 4X upscaling requires Pro |
| Cancellation & refunds | Completely free open-source-powered tool with no accounts or subscription charges. | No automatic renewal; the FAQ states no refund policy, with support available for payment issues. |
| Disclosure of costs & limits | Explicitly discloses WebGPU browser requirements and model options at the top of the page | Scale selector explicitly displays '2X | Max 2800px' and '4X PRO' |
| 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. | Denoising and text edges were retained; the tested free tier was limited to 2× 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. | DeWatermark Image Enhancer's 2X model prioritizes faithful denoising and edge sharpening, scoring PSNR = 27.12 dB overall and 30.46 dB on the engraved wooden sign without hallucinated textures, though 4X (2048×2048) is locked behind Pro. |
| 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 | Users seeking high-PSNR, artifact-free 2x image enhancement without login or watermarks |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 1024 × 1024 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048 × 2048 (true 4x lossless PNG export, supporting arbitrary large-image tiled inference) | 1024 × 1024 (2X Unwatermarked) |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Supports multi-model switching (Swin-UNet Art / Art Scan / Photo), 4-level denoise, and configurable tile size | Supports Batch Enhance Photo and REST API |
| Recorded free-tier dimensions | 2048 × 2048 | 1024 × 1024 |
| Attached file dimensions | 2048 × 2048 · PNG | 1024 × 1024 · PNG |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 2.63s · End-to-end reference: 2.63s | Network-observed server wait: 8.1s · End-to-end reference: 9.5s |
| 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; optional email/Google login |
| 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. | No signup or watermark on the 2X (1024×1024) export; only selecting 4X triggers the Pro upgrade modal. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | nagadomi (waifu2x / nunif Open-Source Author) | XTeam (DeWatermark.ai) |
| Recorded origin | Independent open-source AI vision researcher (Japan) | Global AI Vision Team (XTeam) |
| Domain history record | 2015–Present (waifu2x.net) | 2023–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 XTeam (DeWatermark.ai) with both single-image and Batch Enhance Photo modes. |
| 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. | Lossless 512×512 upload with 60-minute automatic cloud cleanup. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 60 minutes; 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). | 28 / 35 Uploads the 512×512 anchor and automatically completes 2X upscaling (1024×1024) without login; clearly labels '2X (2 credits)' vs '4X PRO (4 credits)' and allows free unwatermarked 1024×1024 download (02_workspace.png, 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 No signup or watermark on the 2X (1024×1024) export; only selecting 4X triggers the Pro upgrade modal. |
| Background & reputation | 19 / 20 Authored and maintained by nagadomi, the creator of the iconic Waifu2x open-source repository and the nunif deep-learning framework. | 17.5 / 20 Operated by XTeam (DeWatermark.ai) with both single-image and Batch Enhance Photo modes. |
| Engineering & privacy | 14.5 / 15 100% local in-browser WebGPU / ONNX Runtime inference — user images never leave the local device, offering maximum privacy protection. | |
| 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 | 53.5 / 65 2X super-resolution (512→1024) achieved full-frame PSNR = 27.12 dB, wooden sign ROI plate_psnr_db = 30.46 dB, SSIM = 0.9711, and edge_corr = 0.6117 with zero ringing artifacts (53.5/65). |
| 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) | 15.5 / 20 Free tier exports 2X (1024×1024, max 2800px) without watermark; 4X requires Pro (15.5/20). |
| 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) | |
