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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 | images-upscale.com | ImgUpscaler | Switch / compare |
|---|---|---|---|
| Image upscaling | 92/100 2048 × 2048 · PNG | 85/100 2048×2048 (PNG · 400% / 4.0x AI Upscale) · Historical description; output not attached | Active task |
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Browse this task →| Criterion | Images-Upscale.com Image upscaling 92/100 Seven-aspect task score Grants 2 free daily guest credits without login—enough to directly export a true 4x (2048×2048) watermark-free native PNG in 7.49s server time with sharp edge and text restoration (16.23 dB plate PSNR). Tested export 2048 × 2048 · PNG Historical test · 2026-10-26 | ImgUpscaler (AI Image Upscaler) Image upscaling 85/100 Seven-aspect task score Free login-free 4× output retains detail well; a fullscreen ad can interrupt initial use, and this run took about 22 seconds. Tested export 2048×2048 (PNG · 400% / 4.0x AI Upscale) · Historical description; output not attached Historical test · 2026-10-16 |
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| Pricing & rules | ||
| Pricing plans | Images Upscale daily free credits and one-time non-expiring credit packs (USD) · 2026-10-26 Plan · source date Monthly / one-time Annual bill / period Quota & limits Daily Free Allowance2026-10-26 ↗ Free Free Free 2 free credits daily (no login required): covers two 2× upscales or one 4× upscale per day, up to 25 MB per image, watermark-free export. Starter Pack2026-10-26 ↗ USD 9.99 · one-time payment Usage / one-time Usage / one-time 110 credits (100 + 10 bonus, ~9.1¢/credit), good for 110 2× or 55 4× upscales; credits never expire. Pro Pack2026-10-26 ↗ USD 19.99 · one-time payment Usage / one-time Usage / one-time 360 credits (300 + 60 bonus, ~5.6¢/credit), good for 360 2× or 180 4× upscales; credits never expire. Studio Pack2026-10-26 ↗ USD 49.99 · one-time payment Usage / one-time Usage / one-time 1,300 credits (1,000 + 300 bonus, ~3.8¢/credit), good for 1,300 2× or 650 4× upscales; credits never expire. 4 plan / billing-period records, all listed; — means that period is not recorded. Guests and signed-in users receive 2 free credits daily (1 credit per 2x upscale, 2 credits per 4x upscale); paid packs are one-time purchases with no subscription auto-renewal and credits never expire. Cancellation, sources & verification recordOne-time credit packs only with no recurring subscriptions; support available via support@images-upscale.com. Images Upscale official pricing page and free credit allowance ↗ · 2026-10-26 Capture 1 ↗ · Capture 2 ↗ | ImgUpscaler personal and business plans (Free / Premium / Business); USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-21 ↗ Free Free Free 50 credits/month; single-image AI upscaling, enhancement, and Reimagine (includes ads; guest single-image 4x upscaling available). Premium Monthly2026-10-21 ↗ USD 9.9/month — Monthly 500 credits/month; includes batch processing, Reimagine AI access, ad-free workspace, and email support. Premium Yearly2026-10-21 ↗ — USD 49/year Annual Billed yearly at USD 49/year (USD 4.08/month equivalent); 500 credits/month, batch processing, ad-free workspace, and email support. Business Monthly2026-10-21 ↗ USD 19.9/month — Monthly No credits limit; single and batch processing, Reimagine AI access, ad-free workspace, and commercial production workflows. Business Yearly2026-10-21 ↗ — USD 69/year Annual Billed yearly at USD 69/year (USD 5.75/month equivalent); no credits limit, batch processing, and ad-free workspace. 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 recordCancel 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 ↗ |
| Free & trial allowance on the test date | Guests receive 2 free daily credits without login (enough for one free 4x upscale or two 2x upscales); registering a free account grants 5 additional first-month credits | Free single-image 200% (2x) and 400% (4x) unwatermarked upscaling without login; batch upload requires a paid plan |
| Cancellation & refunds | One-time credit packs only with no recurring subscriptions; support available via support@images-upscale.com. | 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. |
| Disclosure of costs & limits | Upload panel upfront displays remaining free credits (2 free credits remaining today) and credit cost per scale factor | No paywall traps; supported by standard and vignette Google AdSense ads |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 4× |
| Fixture findings | 4x upscaling of the 512×512 anchor to a native 2048×2048 PNG achieved 27.42 dB PSNR, 0.8876 SSIM, 0.6652 edge_corr, and 16.23 dB calibration plate PSNR with crisp lettering and line pairs. | This guest run produced a watermark-free 4× image with structure retained; findings cover this fixture only. |
| Original historical observation | Uploading the 512×512 degraded anchor without login and selecting 4x produced a native 2048×2048 watermark-free PNG in 7.49s server time (PSNR = 27.42 dB, SSIM = 0.8876, edge_corr = 0.6652, plate_psnr_db = 16.23 dB) with sharp wooden sign text and micro calibration lines (02_workspace.png, 03_download.png). | 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. |
| Suitable uses · historical assessment | Everyday users seeking login-free, true 4x (2048×2048) watermark-free native PNG exports with strong edge sharpness and text restoration | Users who want true 4x (2048×2048) watermark-free faithful super-resolution without creating an account |
| 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 | 2048×2048 (PNG · 400% / 4.0x AI Upscale) · 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 (4x watermark-free native PNG, 3.35 MB) | 2048×2048 (4.0x / 400% · Free without login) |
| Watermark observation | Completely watermark-free (native 2048×2048 PNG export) | 100% Watermark-Free |
| Batch & API | Supports up to 10x upscaling, portrait restoration, and background removal modes; Pro plan supports up to 20-image batch processing | Batch web upload on paid plans; offline batch processing via desktop app Upscal.app |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 7.49s · End-to-end reference: 9.61s | Network-observed server wait: 20.68s · End-to-end reference: 22.22s |
| Date & fixture | 2026-10-26 · 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 | No login required for 2x and 4x upscaling; also supports Google / Email sign-in | No login required; optional email/Google login for paid plans |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero popup ads or forced sign-in walls; once upscaling finishes, an interactive Before/After comparison slider and direct download button appear immediately on the same page. | 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. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Images-Upscale.com (Independent AI Upscaling Team) | ImgUpscaler / Upscal.app Team |
| Recorded origin | Undisclosed jurisdiction (Cloudflare edge + cloud GPU inference) | Independent Cross-Platform Utility Team (Web + macOS/Windows App Store) |
| Domain history record | 2026–Present | 2020–Present |
| Background & reputation assessment | Independent AI image upscaling service launched in 2026 with clear terms, privacy documentation, and support email, though without a disclosed corporate entity name. | Operated by the independent team behind Upscal.app (available on the Mac App Store and Microsoft Store). |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Google Analytics (G-0DP889885P) | Not verified |
| Engineering & privacy assessment | Submits jobs via POST /api/tasks/upscale backed by Cloudflare R2 and cloud Real-ESRGAN GPU inference (7.49s server time, 2.94s upload time); the privacy policy states guest images are retained only temporarily and purged automatically after ~1 hour. | 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. |
| Retention statement | Claims deletion within 1 hours; deletion not independently verified | Claims deletion within 24 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 32.5 / 35 The landing page (01_landing.png) and pricing page clearly disclose free quotas (2 daily free guest credits without login, plus 5 bonus credits for new registered accounts) and credit costs (1 credit for 2x, 2 credits for 4x); in our no-login test, selecting 4x on the 512×512 anchor consumed 2 guest credits and exported a 2048×2048 watermark-free native PNG directly (02_workspace.png, 03_download.png). | 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). |
| Interaction restraint | 28 / 30 Zero popup ads or forced sign-in walls; once upscaling finishes, an interactive Before/After comparison slider and direct download button appear immediately on the same page. | 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. |
| Background & reputation | 14.5 / 20 Independent AI image upscaling service launched in 2026 with clear terms, privacy documentation, and support email, though without a disclosed corporate entity name. | 15 / 20 Operated by the independent team behind Upscal.app (available on the Mac App Store and Microsoft Store). |
| Engineering & privacy | 13 / 15 Submits jobs via POST /api/tasks/upscale backed by Cloudflare R2 and cloud Real-ESRGAN GPU inference (7.49s server time, 2.94s upload time); the privacy policy states guest images are retained only temporarily and purged automatically after ~1 hour. | 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. |
| Task quality | 62 / 65 Pixel fidelity (23.5/25: 512×512 anchor upscaled 4x to 2048×2048 with PSNR = 27.42 dB and SSIM = 0.8876) · Edge & high-frequency recovery (24.5/25: edge_corr = 0.6652, hf_ratio = 0.5259, crisp high-frequency edge reconstruction) · Calibration plate & micro-text (14.0/15: plate_psnr_db = 16.23 dB, sharp wooden sign and calibration plate lettering) (62.0/65) | 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 |
| Deliverable specifications | 20 / 20 2 daily free guest credits allow direct 4x selection and export of a native 2048×2048 watermark-free PNG (3,517,417 bytes) without login (20.0/20) | 20 / 20 No free unwatermarked export (0/8); Free scale factor: 4x (2048×2048 (4.0x / 400% · Free without login)) |
| Processing speed | 12 / 15 Verified via task API timestamps: 7.49s server 4x upscaling inference from createdAt (10:25:37.315Z) to completedAt (10:25:44.805Z), with 2.94s upload and 9.61s end-to-end (12.0/15) | 8 / 15 Network-observed server wait: 20.68s (API mode: async_poll; end-to-end 22.22s shown for reference only, never penalized) |
