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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 | Bigjpg | Photoroom | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 86/100 2048 × 2048 · PNG | Compare in task topic → |
| Image upscaling | 89/100 2048 × 2048 · PNG | 87/100 JPEG · Output attached | Active task |
| Object removal | Not tested in topic | 88/100 2048×2048 (No Watermark PNG) · Historical description; output not attached | Compare in task topic → |
| Image generation | Not tested in topic | 86/100 JPEG · Output attached | Compare in task topic → |
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Browse this task →| Criterion | Bigjpg (AI Super-Resolution Image Enlarger) Image upscaling 89/100 Seven-aspect task score Free login-free 4× output offers adjustable denoising and clear upgrade limits; detail is retained well, with about 18.5 seconds of free processing in this run. Tested export 2048 × 2048 · PNG Historical test · 2026-10-17 | PhotoRoom (Image Enhancer & Upscaler) Image upscaling 87/100 Seven-aspect task score Inside the web app tool catalog, guests can run 4x upscaling and download a watermark-free image without signing in; single-sample response is fast with sharp text edges, though the marketing page lacks an upload box and exports JPEG. Tested export JPEG · Output attached Historical test · 2026-10-19 |
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| Pricing & rules | ||
| Pricing plans | Bigjpg web and app plans (Free / Basic 2-month / Standard half-year / Pro annual); CNY · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-21 ↗ Free Free Free Available without login; 20 images/month, max 5 MB per file, up to 4x unwatermarked upscaling on shared servers. Basic (2 Months)2026-10-21 ↗ CNY 35 · one-time payment Usage / one-time Usage / one-time CNY 35 for 2 months (500 images/month); max 50 MB per image, up to 16x upscaling, dedicated high-performance server, and batch processing. Valid for 2 months from purchase Standard (6 Months)2026-10-21 ↗ CNY 69/6 months Other period Other period CNY 69 for 6 months (1,000 images/month); max 50 MB per image, up to 16x upscaling, dedicated high-performance server, and batch processing. Pro (1 Year)2026-10-21 ↗ — CNY 138/year Annual CNY 138 for 1 year (2,000 images/month); max 50 MB per image, up to 16x upscaling, dedicated high-performance server, and batch processing. 4 plan / billing-period records, all listed; — means that period is not recorded. The official pricing modal lists Free (20 images/month, max 5 MB, up to 4x upscaling) and three fixed-term tiers: Basic CNY 35 for 2 months (500 images/month), Standard CNY 69 for 6 months (1,000 images/month), and Pro CNY 138 for 1 year (2,000 images/month). All paid tiers unlock up to 16x upscaling, 50 MB upload size, priority high-performance servers, and batch processing via WeChat Pay, Alipay, or Stripe. Cancellation, sources & verification recordPurchased for fixed periods (2 months, 6 months, or 1 year) via WeChat Pay, Alipay, or Stripe under official Terms of Service. Bigjpg official website and pricing table modal ↗ · 2026-10-21 Capture 1 ↗ | USD web subscriptions: Pro, Max and all four Ultra volumes, monthly and annual; excludes API/MCP · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-20 ↗ Free Free Free Limited AI credits and exports; exact quantities are not stated in official help Personal, non-commercial use only; no API access Pro2026-10-20 ↗ USD 12.99/month USD 89.99/year Monthly 8,000 AI credits/month, 1,000 exports/month; core removal uses no AI credits Annual 8,000 AI credits/month, 1,000 exports/month; core removal uses no AI credits Public card shows $7.50/month equivalent; in-app upgrade modal after sign-in confirms USD 89.99/year (one free trial per person) Max2026-10-20 ↗ USD 34.99/month USD 249.99/year Monthly 25,000 AI credits/month, 3,000 exports/month; core removal uses no AI credits Annual 25,000 AI credits/month, 3,000 exports/month; core removal uses no AI credits Public card shows $20.99/month equivalent; in-app upgrade modal after sign-in confirms USD 249.99/year ($20.83/month equivalent, one free trial per person) Ultra 75k2026-10-20 ↗ USD 99/month USD 990/year Monthly 75,000 AI credits/month, 10,000 exports/month; core removal uses no AI credits Annual 75,000 AI credits/month, 10,000 exports/month; core removal uses no AI credits Public card shows $82.50/month equivalent; in-app upgrade modal after sign-in confirms USD 990.00/year Ultra 150k2026-10-20 ↗ USD 198/month USD 1,980/year Monthly 150,000 AI credits/month, 20,000 exports/month; core removal uses no AI credits Annual 150,000 AI credits/month, 20,000 exports/month; core removal uses no AI credits Public card shows $165/month equivalent; in-app upgrade modal after sign-in confirms USD 1,980.00/year Ultra 375k2026-10-20 ↗ USD 495/month USD 4,950/year Monthly 375,000 AI credits/month, 50,000 exports/month; core removal uses no AI credits Annual 375,000 AI credits/month, 50,000 exports/month; core removal uses no AI credits Public card shows $413/month equivalent ($412.50/month in modal); in-app upgrade modal after sign-in confirms USD 4,950.00/year Ultra 750k2026-10-20 ↗ USD 990/month USD 9,900/year Monthly 750,000 AI credits/month, 100,000 exports/month; core removal uses no AI credits Annual 750,000 AI credits/month, 100,000 exports/month; core removal uses no AI credits Public card shows $825/month equivalent; in-app upgrade modal after sign-in confirms USD 9,900.00/year 13 plan / billing-period records, all listed; — means that period is not recorded. Free use is personal and non-commercial, with no exact allowance stated. Core removal uses no AI credits but export caps and fair-use limits apply. The public pricing page only shows monthly equivalents for annual plans; after sign-in, the in-app upgrade modal confirms all six annual invoice totals: Pro USD 89.99/year (not $7.5×12=$90), Max USD 249.99/year ($20.83/month equivalent, not $20.99×12), and Ultra tiers at USD 990 / 1,980 / 4,950 / 9,900/year. The pricing page states VAT/GST is included. Cancellation, sources & verification recordCancel in app. Pro/Max annual plans have a seven-day trial. Pro/Max/Ultra refunds may be requested within seven days of the last payment, but are not guaranteed and may be refused for misuse or terms violations. API is excluded. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ · Capture 5 ↗ · Capture 6 ↗ · Capture 7 ↗ · Capture 8 ↗ · Capture 9 ↗ · Capture 10 ↗ · Capture 11 ↗ Purchase entry requires sign-in ↗ · 2026-10-20 Capture 1 ↗ Official plans and free-use scope ↗ · 2026-10-20 Capture 1 ↗ Official refund eligibility ↗ · 2026-10-20 Capture 1 ↗ In-app upgrade modal annual billing totals (verified after sign-in) ↗ · 2026-10-21 Capture 1 ↗ |
| Free & trial allowance on the test date | Free tier allows 20 images/month up to 3000×3000px / 5MB at 2x or 4x with all 5 denoising levels and zero watermarks | Guest Image Enhancer flow upscales the 512px anchor to a 2048×2048 native JPEG (4x) without sign-in or payment. |
| Cancellation & refunds | Purchased for fixed periods (2 months, 6 months, or 1 year) via WeChat Pay, Alipay, or Stripe under official Terms of Service. | Cancel in app. Pro/Max annual plans have a seven-day trial. Pro/Max/Ultra refunds may be requested within seven days of the last payment, but are not guaranteed and may be refused for misuse or terms violations. API is excluded. |
| Disclosure of costs & limits | 8x and 16x options are transparently disabled in the settings modal before processing starts | Not verified |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 4× |
| Fixture findings | The tested 4× photo configuration produced smooth output with text retained; other settings remain untested. | This 500x500 sample was upscaled 4x to 2000x2000 with sharp text edges; output was exported as JPEG. |
| Original historical observation | Configured to Photo + 4x + Low Noise Reduction, Bigjpg exported a clean 2048×2048 PNG scoring PSNR = 28.27 dB and SSIM = 0.9790 with smooth tonal transitions and zero generative hallucinations. | Guest Image Enhancer flow upscales the 512px anchor to a 2048×2048 native JPEG (4x) with sharp text on the wooden sign and calibration plate. |
| Suitable uses · historical assessment | Users wanting a no-login, zero-watermark 4x (2048px) upscaler with 5-level adjustable noise reduction for photos and illustrations | Not verified |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | JPEG · Output attached · Check watermark record |
| Historical specification note · not an official maximum | 2048 × 2048 (Full 4x Unwatermarked PNG) | Not verified |
| Watermark observation | None (100% watermark-free) | Not verified |
| Batch & API | Multi-image queue, Windows/Mac desktop apps, and REST API | Not verified |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 18.5s · End-to-end reference: 20s | Network-observed server wait: 2.72s · End-to-end reference: 3.86s |
| Date & fixture | 2026-10-17 · anchor_upscale_v1 · US-West (California, AS2914) | 2026-10-19 · 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 | Not verified |
| Sign-in methods | No login required; optional account login for history sync and parallel high-speed queues | No login required in app.photoroom.com/ai-tools Image Enhancer; Google / Apple / Facebook / email supported |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero registration, zero popups, and zero watermarks: once processing completes, a green "Download (274.41 KB)" button directly exports the full 4x (2048×2048) PNG. | Requires navigating from the SEO landing page into the web app tool catalog to upload, but the Image Enhancer workflow itself completes without popups or forced registration. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Bigjpg Team | AI Visual Unicorn (Paris, France) |
| Recorded origin | Cross-Platform AI Super-Resolution Team (Launched 2017) | Not verified |
| Domain history record | 2017–present (9+ years) | Not verified |
| Background & reputation assessment | Operating continuously since 2017 as one of the best-known Waifu2x / SRCNN deep convolutional super-resolution services across Web, Windows, macOS, iOS, Android, and API. | Operated by PhotoRoom SAS (Paris, France), a widely recognized AI visual editing platform across mobile and web. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | Supports offline queue recovery and one-click "Delete" to immediately purge uploaded/upscaled files from cloud storage. | Processes 4x upscaling via synchronous HTTPS endpoint ai-gateway.photoroom.com/v3/upscale returning a binary JPEG. |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | Explicit retention period unconfirmed; inspect policy record |
| Evaluation basis | ||
| Pricing transparency | 33 / 35 Anonymous guests can upload the 512×512 test image and open the clean configuration modal (Artwork/Photo, 2x/4x free, 5 noise reduction levels: None/Low/Medium/High/Highest), with only 8x/16x grayed out and labeled "Upgrade for 8x/16x" (02_workspace.png, 03_download.png). | 26 / 35 The /tools/photo-enhancer marketing page has no inline file input and public pricing cards show monthly equivalents for annual plans; however, inside app.photoroom.com/ai-tools Image Enhancer, guests can upscale the 512px anchor 4x and download a 2048×2048 JPEG for free (in-app modal verified 2026-10-21: Pro $89.99/yr, Max $249.99/yr). |
| Interaction restraint | 28.5 / 30 Zero registration, zero popups, and zero watermarks: once processing completes, a green "Download (274.41 KB)" button directly exports the full 4x (2048×2048) PNG. | 22 / 30 Requires navigating from the SEO landing page into the web app tool catalog to upload, but the Image Enhancer workflow itself completes without popups or forced registration. |
| Background & reputation | 18 / 20 Operating continuously since 2017 as one of the best-known Waifu2x / SRCNN deep convolutional super-resolution services across Web, Windows, macOS, iOS, Android, and API. | 19 / 20 Operated by PhotoRoom SAS (Paris, France), a widely recognized AI visual editing platform across mobile and web. |
| Engineering & privacy | 13 / 15 Supports offline queue recovery and one-click "Delete" to immediately purge uploaded/upscaled files from cloud storage. | 12 / 15 Processes 4x upscaling via synchronous HTTPS endpoint ai-gateway.photoroom.com/v3/upscale returning a binary JPEG. |
| Task quality | 56.5 / 65 4x Photo mode (Low noise reduction) exported a native 2048×2048 unwatermarked PNG achieving full-frame PSNR = 28.27 dB and SSIM = 0.9790, suppressing JPEG block artifacts while preserving clean structural geometry and color accuracy (56.5/65). | 58 / 65 4x upscale to 2048×2048 native JPEG: full-image PSNR=27.60 dB, SSIM=0.8605, edge gradient correlation edge_corr=0.6917, high-frequency ratio hf_ratio=0.7804, calibration plate PSNR=16.86 dB with crisp text and line-pair edges. |
| Deliverable specifications | 20 / 20 Free guest tier directly exports full 4x (2048×2048) unwatermarked PNG (20.0/20). | 18 / 20 Guest flow directly exports a 2048×2048 (4x) watermark-free image; delivered as lossy JPEG rather than lossless PNG (-2). |
| Processing speed | 10.5 / 15 Free cloud GPU 4x Photo super-resolution completed in ~18.5s (10.5/15). | 14 / 15 2026-10-21 single-sample network timing: synchronous POST /v3/upscale pure server wait 2.72s (download 0.87s, end-to-end 3.86s). |
