ImgUpscaler (AI Image Upscaler) · Image upscaling
Free login-free 4× output retains detail well; a fullscreen ad can interrupt initial use, and this run took about 22 seconds.
US-West (California, AS2914)
No native export attached; page screenshot evidence only
Subsequent pricing and service checks are shown separately without altering historical scores.
One run does not establish all complex scenes, untested paid maxima or long-term uptime.
Plans & historical pricing
ImgUpscaler personal and business plans (Free / Premium / Business); USD · 2026-10-21
5 plan / billing-period records, all listed; — means that period is not recorded.
The official pricing page lists Free (USD 0, 50 credits/month, single-image processing, includes ads), Premium (USD 9.90/month or USD 49/year, equivalent to USD 4.08/month, with 500 credits/month, batch processing, and no ads), and Business (USD 19.90/month or USD 69/year, equivalent to USD 5.75/month, with no credit limit, batch processing, and no ads).
Cancellation, sources & verification record
Cancel or change plans anytime from the account billing page; both free and paid results may be used for personal or commercial projects subject to source-image rights.
ImgUpscaler official monthly/yearly pricing and FAQ ↗ · 2026-10-21 Capture 1 ↗ · Capture 2 ↗
Pricing recorded on the test date · 2026-10-16
Starter $3.9/mo ($19/yr) · Pro $6.9/mo ($39/yr, ad-free + batch upscaling)
Ad-supported free 4x guest tier + monthly/annual ad-free subscriptions
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- 2048×2048 (PNG · 400% / 4.0x AI Upscale)
- Watermark
- 100% Watermark-Free
- Free allowance
- Free single-image 200% (2x) and 400% (4x) unwatermarked upscaling without login; batch upload requires a paid plan
- Account requirements
- No login required; optional email/Google login for paid plans
- Maximum specification record
- 2048×2048 (4.0x / 400% · Free without login)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Batch web upload on paid plans; offline batch processing via desktop app Upscal.app
- Manual refinement
- Not recorded or not verified
Tested result & sample
PSNR=27.50dB · SSIM=0.8900 (4x 2048×2048 unwatermarked PNG); edge_corr=0.6685, hf_ratio=0.4995, plate_psnr=16.22dB—one of the very few tools offering genuine 400% watermark-free exports to anonymous guests.
- Fixture
- anchor_upscale_v1
- Recorded environment
- US-West (California, AS2914)
- Network-observed server wait
- 20.68 s
- End-to-end reference
- 22.22 s
Network wait includes round trips, queuing and polling error, not pure inference time. Local timings depend on the device; repetition counts are not standardized in legacy records.
No native export is attached. Screenshots show the visible page, but do not independently establish export properties or file validity.
Experience, rules & trust
- Disclosure
- No paywall traps; supported by standard and vignette Google AdSense ads
- Interaction
- Zero login walls or bait-and-switch paywalls, though the free web page runs Google AdSense including a full-screen interstitial vignette (`#google_vignette`, Screenshot ④) that may require dismissing.
- Entity record
- ImgUpscaler / Upscal.app Team
- Origin
- Independent Cross-Platform Utility Team (Web + macOS/Windows App Store)
- Domain history record
- 2020–Present
- Third-party tracking record
- Not recorded or not verified
- External information
- Not recorded or not verified
- Processing
- Cloud Async Super-Resolution Queue (20.68s server processing)
- Retention statement
- FAQ #10 commits to purging all uploaded and upscaled files from servers within 24 hours
A recorded statement does not verify deletion or all data-processing behavior.
Verifiable audit trail & evidence
Four SHA-256-verified stages link the benchmark fixture, same-run interface screenshots, native exported artifact and archived pricing sources.
anchor_upscale_v1 · Inspect fixture & file inspector →
Captures entry rules, result view and export disclosure.
Page screenshot evidence only
ImgUpscaler official monthly/yearly pricing and FAQ (snapshot ↗)
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 84.6/100
Overall = honesty & reputation × 30% + capability × 70%. Component maxima follow this report’s rubric. List scores are rounded for display; original precision is retained here.
Scoring version 2.3.1 · Test fixture anchor_upscale_v1
Honesty & reputation · 80/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 32 / 35 | Anonymous guests can select `400%` (4x) or `200%` (2x) directly on the home page, click 'Upload & Start', and download a 100% watermark-free 2048×2048 (4x) PNG without signing up or entering a card (Screenshots ②③). | Evidence A → |
| Interaction restraint | 21 / 30 | Zero login walls or bait-and-switch paywalls, though the free web page runs Google AdSense including a full-screen interstitial vignette (`#google_vignette`, Screenshot ④) that may require dismissing. | Evidence A → |
| Background & reputation | 15 / 20 | Operated by the independent team behind Upscal.app (available on the Mac App Store and Microsoft Store). | Evidence B → |
| Engineering & privacy | 12 / 15 | Uses `/api/legacy/upload` and `/api/legacy/status` async polling; FAQ #10 explicitly states all uploaded and processed images are permanently deleted within 24 hours. | Evidence A → |
Capability · 86.5/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 58.5 / 65 | PSNR vs 2048px GT: 27.5 dB · SSIM: 0.89 · Edge Gradient Correlation: 0.6685 · High-Freq Sharpness Ratio: 0.4995 · Calibration Plate PSNR: 16.22 dB | Evidence B → |
| Deliverable specifications | 20 / 20 | No free unwatermarked export (0/8); Free scale factor: 4x (2048×2048 (4.0x / 400% · Free without login)) | Evidence B → |
| Processing speed | 8 / 15 | Network-observed server wait: 20.68s (API mode: async_poll; end-to-end 22.22s shown for reference only, never penalized) | Evidence B → |
Legacy scores may include advertised maximum capabilities. Read tested output separately from paid capabilities. Records without matching tiers and scope are not ranked together.
Revisions & corrections
- 2026-10-16
Initial real-machine evaluation on Mode A ground-truth anchor (anchor_upscale_v1: 512px -> 2048px GT).