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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 | Picsart | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 88/100 2048 × 2048 · PNG | Compare in task topic → |
| Image upscaling | 89/100 2048 × 2048 · PNG | 87/100 1024×1024 (PNG · 2.0x Free Tier) · Historical description; output not attached | Active task |
| Photo restoration | Not tested in topic | 69/100 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 | Picsart (AI Image Enhancer) Image upscaling 87/100 Seven-aspect task score Free and paid sizes are disclosed upfront with login-free 2× output; higher resolution needs an upgrade, and result links are accessible without login. Tested export 1024×1024 (PNG · 2.0x Free Tier) · Historical description; output not attached Historical test · 2026-10-16 |
|---|---|---|
| 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 ↗ | Web Pro and all public Ultra credit volumes; per Ultra seat · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Pro2026-10-20 ↗ USD 15/month USD 126/year Monthly 250 general credits/month; batch editing up to 50 images Annual 250 general credits/month; Ultra billed per seat Rules [1] Ultra 1,0002026-10-20 ↗ USD 45/month USD 480/year Annual 1,000 general credits/month; Ultra billed per seat Rules [1] Monthly 1,000 general credits/month/seat; batch editing up to 100 images Ultra 1,5002026-10-20 ↗ USD 75/month USD 720/year Annual 1,500 general credits/month; Ultra billed per seat Rules [1] Monthly 1,500 general credits/month/seat; batch editing up to 100 images Ultra 3,0002026-10-20 ↗ USD 129/month USD 1,440/year Annual 3,000 general credits/month; Ultra billed per seat Rules [1] Monthly 3,000 general credits/month/seat; batch editing up to 100 images Ultra 6,0002026-10-20 ↗ USD 255/month USD 2,880/year Annual 6,000 general credits/month; Ultra billed per seat Rules [1] Monthly 6,000 general credits/month/seat; batch editing up to 100 images Ultra 9,0002026-10-20 ↗ USD 379/month USD 4,320/year Annual 9,000 general credits/month; Ultra billed per seat Rules [1] Monthly 9,000 general credits/month/seat; batch editing up to 100 images 13 plan / billing-period records, all listed; — means that period is not recorded. Six annual charges verified in single-seat checkout. The current public pricing page lists Pro/Ultra without a free removal count. It says add-on credits never expire but does not quote their purchase prices, which remain unconfirmed. Annual prices are per seat; tax depends on billing address. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordCancel anytime in account subscription settings 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 ↗ · Capture 12 ↗ · Capture 13 ↗ Annual payment summaries for each volume ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ · Capture 5 ↗ · Capture 6 ↗ Official plans and add-on credit rules ↗ · 2026-10-20 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 | Free no-login 2x (1024×1024) enhancement and download; HD 4x (2048×2048) is locked behind Pro/Ultra |
| 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 anytime in account subscription settings |
| Disclosure of costs & limits | 8x and 16x options are transparently disabled in the settings modal before processing starts | Hero subtitle explicitly states upfront: 'Plus, you can save a lower-resolution image for free!', and the download menu (03_download.png) clearly labels 1024×1024 [Free] vs 2048×2048 [Pro/Ultra] |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 2× |
| Fixture findings | The tested 4× photo configuration produced smooth output with text retained; other settings remain untested. | The tested 2× output was watermark-free with sharper edges; higher scales were not verified here. |
| 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. | PSNR=27.04dB · SSIM=0.8862 (2x 1024×1024 Free tier unwatermarked PNG); Edge gradient correlation edge_corr=0.6074; high-frequency recovery hf_ratio=0.4780 (+11.29% over Bicubic); Calibration plate PSNR=15.52dB: noticeable sharpening on 'REALTEST 2026' wood sign and apple skin highlights. |
| Suitable uses · historical assessment | Users wanting a no-login, zero-watermark 4x (2048px) upscaler with 5-level adjustable noise reduction for photos and illustrations | Users who want instant, in-page no-login 2x (1024×1024) image enhancement without being redirected into a heavy editor |
| 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 Free Tier) · 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 (Full 4x Unwatermarked PNG) | 1024×1024 (PNG · 2.0x Free Tier) |
| Watermark observation | None (100% watermark-free) | No watermark |
| Batch & API | Multi-image queue, Windows/Mac desktop apps, and REST API | Pro tier supports batch image enhancement and programmable APIs |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| 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: 3.2s · End-to-end reference: 4.6s |
| 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 | No login required; optional account login for history sync and parallel high-speed queues | No login required to export 2x (1024×1024) Free tier; 4x (2048×2048) requires Pro/Ultra subscription |
| 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. | Completes Before/After comparison and 1024×1024 unwatermarked PNG export right on the landing page with zero login required. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Bigjpg Team | PicsArt, Inc. (Miami, FL / Yerevan) |
| Recorded origin | Cross-Platform AI Super-Resolution Team (Launched 2017) | Miami, FL, USA / Yerevan, Armenia |
| Domain history record | 2017–present (9+ years) | 2011–Present |
| 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. | Global creative unicorn PicsArt, Inc. with 150M+ monthly active creators. |
| 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. | Privacy note: enhanced outputs are stored on an unauthenticated public CDN URL (cdn-ai-hs.picsart.com/ai-hot-storage/...), so avoid uploading sensitive private documents. |
| 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). | 31 / 35 Exemplary expectation setting: the hero subtitle explicitly states 'Plus, you can save a lower-resolution image for free!', and clicking Download opens a clear two-tier menu (03_download.png): '1024 x 1024px [Free]' vs '2048 x 2048px [Pro/Ultra]'. |
| 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. | 26 / 30 Completes Before/After comparison and 1024×1024 unwatermarked PNG export right on the landing page with zero login required. |
| 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. | 18 / 20 Global creative unicorn PicsArt, Inc. with 150M+ monthly active creators. |
| Engineering & privacy | 13 / 15 Supports offline queue recovery and one-click "Delete" to immediately purge uploaded/upscaled files from cloud storage. | 12 / 15 Privacy note: enhanced outputs are stored on an unauthenticated public CDN URL (cdn-ai-hs.picsart.com/ai-hot-storage/...), so avoid uploading sensitive private documents. |
| 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). | 55.5 / 65 PSNR vs 2048px GT: 27.04 dB · SSIM: 0.8862 · Edge Gradient Correlation: 0.6074 · High-Freq Sharpness Ratio: 0.478 · Calibration Plate PSNR: 15.52 dB |
| Deliverable specifications | 20 / 20 Free guest tier directly exports full 4x (2048×2048) unwatermarked PNG (20.0/20). | 17 / 20 Clean unwatermarked export (8/8); Free scale factor: 2x (1024×1024 (PNG · 2.0x Free Tier)) |
| Processing speed | 10.5 / 15 Free cloud GPU 4x Photo super-resolution completed in ~18.5s (10.5/15). | 14 / 15 Network-observed server wait: 3.2s (API mode: sync_post; end-to-end 4.6s shown for reference only, never penalized) |
