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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 | iLoveIMG | Bigjpg | Switch / compare |
|---|---|---|---|
| Background removal | 83/100 2048 × 2048 · PNG | Not tested in topic | Compare in task topic → |
| Image compression | 92/100 2048 × 2048 · PNG | Not tested in topic | Compare in task topic → |
| Image upscaling | 96/100 2048×2048 (PNG · 4.0x Full Resolution) · Historical description; output not attached | 89/100 2048 × 2048 · PNG | Active task |
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Browse this task →| Criterion | iLoveIMG (AI Image Upscaler) Image upscaling 96/100 Seven-aspect task score Free login-free 4× output has no promotional download blocks and good detail; it uses cloud upload and took about 7.6 seconds end to end. Tested export 2048×2048 (PNG · 4.0x Full Resolution) · Historical description; output not attached Historical test · 2026-10-16 | 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 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | Web single-user free, monthly, annual and enterprise quote; USD · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Basic2026-10-20 ↗ Free Free Free Basic tools and limited processing; AI background-removal allowance unspecified Premium2026-10-20 ↗ USD 9/month USD 60/year Annual 2,000 AI credits listed; refresh cycle not stated on the card All tools, priority support and no ads; 1–25 users selectable Monthly 2,000 AI credits; reset period not stated on the card 4 plan / billing-period records, all listed; — means that period is not recorded. Pricing, FAQ and removal entry were rechecked. Premium lists 2,000 AI credits, but these pages do not specify removal cost, free image count or credit refresh cycle. Unlimited document processing does not establish unlimited AI removal. FAQ says file-count/size limits block processing; prices include VAT, with region-dependent reverse-charge invoicing. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordUpgrade, downgrade or cancel in account settings; refund terms not separately verified. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ Current pricing and AI credits ↗ · 2026-10-20 Capture 1 ↗ Official handling of usage limits ↗ · 2026-10-20 Capture 1 ↗ Background removal entry recheck ↗ · 2026-10-20 Capture 1 ↗ | 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 ↗ |
| Free & trial allowance on the test date | Free 4x (2048×2048) upscaling and download without login for any input under 6MP | Free tier allows 20 images/month up to 3000×3000px / 5MB at 2x or 4x with all 5 denoising levels and zero watermarks |
| Cancellation & refunds | Upgrade, downgrade or cancel in account settings; refund terms not separately verified. | Purchased for fixed periods (2 months, 6 months, or 1 year) via WeChat Pay, Alipay, or Stripe under official Terms of Service. |
| Disclosure of costs & limits | Direct 2x / 4x toggle in workspace with zero hidden paywall traps | 8x and 16x options are transparently disabled in the settings modal before processing starts |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 4× |
| Fixture findings | Signs and fine lines were clear in this 4× output; other images need separate tests. | The tested 4× photo configuration produced smooth output with text retained; other settings remain untested. |
| Original historical observation | PSNR=27.42dB · SSIM=0.8918 (evaluated on full 2048×2048 ground-truth grid); Edge gradient correlation edge_corr=0.6718 (#1 overall, +10.62% over Bicubic 0.5656); high-frequency recovery hf_ratio=0.5348 (#1 overall); Calibration plate PSNR=16.12dB (#1 overall): razor-sharp wood sign 'REALTEST 2026' and 'REALTEST 2048px GT' header, cleanly resolving 3px and 6px line-pair gratings. | 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. |
| Suitable uses · historical assessment | Top overall choice for no-login, true 4x (2048×2048) unwatermarked PNG export with the highest edge sharpness recovery | Users wanting a no-login, zero-watermark 4x (2048px) upscaler with 5-level adjustable noise reduction for photos and illustrations |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | |
| Delivery capabilities | ||
| Recorded export specifications | 2048×2048 (PNG · 4.0x Full Resolution) · Historical description; output not attached · Check watermark record No native output is attached; check the evidence for specification and watermark claims. | 2048 × 2048 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (PNG · 4.0x Full Resolution) | 2048 × 2048 (Full 4x Unwatermarked PNG) |
| Watermark observation | No watermark | None (100% watermark-free) |
| Batch & API | Free tier supports up to 3 images per batch; developer REST API available | Multi-image queue, Windows/Mac desktop apps, and REST API |
| Recorded free-tier dimensions | Not verified | 2048 × 2048 |
| Attached file dimensions | Not verified | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 5.26s · End-to-end reference: 7.61s | Network-observed server wait: 18.5s · End-to-end reference: 20s |
| Date & fixture | 2026-10-16 · 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 | Direct 2x and 4x upscaling & export with no login required; optional Google/Email login | No login required; optional account login for history sync and parallel high-speed queues |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero signup popups or deceptive upsell overlays; clicking 'Upscale' navigates straight to the clean download page (03_download.png). | 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. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | iLovePDF / Marco Grossi (Barcelona, Spain) | Bigjpg Team |
| Recorded origin | Barcelona, Spain | Cross-Platform AI Super-Resolution Team (Launched 2017) |
| Domain history record | 2016–Present | 2017–present (9+ years) |
| Background & reputation assessment | Operated by the Barcelona-based iLovePDF team, serving tens of millions of monthly users with top-tier provenance. | 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. |
| 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 | Upload took 2.35s and pure server 4x super-resolution inference took 5.26s, backed by a strict 2-hour auto-deletion policy. | Supports offline queue recovery and one-click "Delete" to immediately purge uploaded/upscaled files from cloud storage. |
| Retention statement | Claims deletion within 2 hours; deletion not independently verified | Explicit retention period unconfirmed; inspect policy record |
| Evaluation basis | ||
| Pricing transparency | 34 / 35 Most generous and transparent free policy in the category: allows no-login upload of our 512×512 anchor (01_landing.png) and lets guests freely switch from 2x (1024×1024) to full 4x (2048×2048) in the workspace (02_workspace.png) with direct unwatermarked PNG export. | 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). |
| Interaction restraint | 28 / 30 Zero signup popups or deceptive upsell overlays; clicking 'Upscale' navigates straight to the clean download page (03_download.png). | 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. |
| Background & reputation | 19 / 20 Operated by the Barcelona-based iLovePDF team, serving tens of millions of monthly users with top-tier provenance. | 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. |
| Engineering & privacy | 14 / 15 Upload took 2.35s and pure server 4x super-resolution inference took 5.26s, backed by a strict 2-hour auto-deletion policy. | 13 / 15 Supports offline queue recovery and one-click "Delete" to immediately purge uploaded/upscaled files from cloud storage. |
| Task quality | 62.5 / 65 PSNR vs 2048px GT: 27.42 dB · SSIM: 0.8918 · Edge Gradient Correlation: 0.6718 · High-Freq Sharpness Ratio: 0.5348 · Calibration Plate PSNR: 16.12 dB | 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). |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Free scale factor: 4x (2048×2048 (PNG · 4.0x Full Resolution)) | 20 / 20 Free guest tier directly exports full 4x (2048×2048) unwatermarked PNG (20.0/20). |
| Processing speed | 14 / 15 Network-observed server wait: 5.26s (API mode: sync_post; end-to-end 7.61s shown for reference only, never penalized) | 10.5 / 15 Free cloud GPU 4x Photo super-resolution completed in ~18.5s (10.5/15). |
