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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 | LightX | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 64/100 480 × 480 · PNG | Compare in task topic → |
| Image upscaling | 89/100 2048 × 2048 · PNG | 86/100 JPEG · Output attached | Active task |
| Object removal | Not tested in topic | 66/100 JPEG · Output attached | Compare in task topic → |
| Image generation | Not tested in topic | 83/100 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 | LightX AI Image Upscaler Image upscaling 86/100 Seven-aspect task score A signed-in free account uses 2 daily credits to upscale 4X in ~6.4s and export a 2048×2048 watermark-free JPEG with strong pixel and edge fidelity, though sign-in is required and output is lossy JPEG. Tested export JPEG · Output attached Historical test · 2026-10-23 |
|---|---|---|
| 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 monthly/annual subscriptions and 800-credit pack; excludes API · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Starter2026-10-20 ↗ Free Free Free Card states 6 AI credits/day; comparison table instead says up to 5 credits Background removal outputs low-resolution JPG; export table lists 512px Pro2026-10-20 ↗ USD 9.99/month USD 59.99/year Annual 1,000 AI credits/month; unlimited background removal/replacement PNG and high resolution; export table lists 4096px Monthly 1,000 AI credits/month; unlimited background removal/replacement PNG and high resolution; export table lists 4096px 800 AI credit pack2026-10-20 ↗ USD 9.99 · one-time payment Usage / one-time Usage / one-time 800 general AI credits Advertised lifetime validity 4 plan / billing-period records, all listed; — means that period is not recorded. Monthly $9.99 verified; promotional annual total $59.99 and non-expiring 800-credit pack $9.99. The free card still says 6 daily credits while the table says up to 5. Free removal is low-resolution JPG; Pro provides unlimited high-resolution PNG removal. Earlier INR and current USD observations do not imply identical regional pricing. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordCancellation and refund terms follow official checkout and help policies. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ Monthly pricing and feature comparison ↗ · 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 accounts receive 6 daily credits; upscaling the 512×512 canonical anchor at 4X consumes 2 credits and exports a 2048×2048 watermark-free JPEG via Apply -> Download even if a dismissible cloud-storage-full prompt appears |
| Cancellation & refunds | Purchased for fixed periods (2 months, 6 months, or 1 year) via WeChat Pay, Alipay, or Stripe under official Terms of Service. | Cancellation and refund terms follow official checkout and help policies. |
| Disclosure of costs & limits | 8x and 16x options are transparently disabled in the settings modal before processing starts | Requires sign-in upon clicking upload on the landing page; workspace clearly displays remaining credits and 2X/4X credit cost (2 credits) |
| 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. | Upscaled 4X from 512px to 2048×2048 with 28.05 dB PSNR and 0.8979 SSIM, preserving sharp brass robot edges, wooden sign lettering, and micro calibration plate lines. |
| 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. | Upscaling the 512×512 canonical anchor at 4X (consuming 2 free credits) produces a native 2048×2048 JPEG (PSNR = 28.05 dB, SSIM = 0.8979, edge_corr = 0.7118, plate_psnr_db = 16.85 dB, server wait 6.42s) with sharp brass robot details, wooden sign lettering, and calibration plate lines. |
| 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 willing to sign in to a free account and use daily free credits to export true 4X (2048×2048) high-fidelity watermark-free upscaled images |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | JPEG · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 2048 × 2048 (Full 4x Unwatermarked PNG) | 2048×2048 (4X watermark-free native JPEG, 2.78 MB) |
| Watermark observation | None (100% watermark-free) | Completely watermark-free (native 2048×2048 JPEG export) |
| Batch & API | Multi-image queue, Windows/Mac desktop apps, and REST API | Offers commercial API and full online editor handoff |
| 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: 6.42s · End-to-end reference: 6.84s |
| Date & fixture | 2026-10-17 · anchor_upscale_v1 · US-West (California, AS2914) | 2026-10-23 · 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 | Account required in this test |
| Sign-in methods | No login required; optional account login for history sync and parallel high-speed queues | Supports free Google / Facebook / Apple / Email sign-in (6 daily free AI credits granted) |
| 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. | The workspace provides 2X/4X scale toggles and a Before/After comparison slider (02_result.png). Although a "Your Cloud storage is full" upgrade modal may appear when entering the editor, dismissing it and clicking Apply -> Download exports the native 2048×2048 watermark-free JPEG without payment gating (03_download.png). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Bigjpg Team | AndOr Communications Pvt. Ltd. (LightX) |
| Recorded origin | Cross-Platform AI Super-Resolution Team (Launched 2017) | New Delhi, India |
| Domain history record | 2017–present (9+ years) | 2017–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. | Operated by AndOr Communications Pvt. Ltd. (New Delhi, India), creator of the LightX mobile and web visual AI suite with tens of millions of users. |
| 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. | Uses AWS S3 presigned uploads paired with POST https://www.instagraphe.mobi/andor-media-1.0/aiartweb/generateImage async inference and CDN delivery; after vendor S3 credential recovery on 2026-10-23, single-sample server wait measured 6.42s (6.84s end-to-end). |
| 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). | 25 / 35 The landing page (01_landing.png) requires sign-in before entering the workspace; once signed in, the workspace clearly displays the daily free credit balance (6 credits) and "2X / 4X" scale options. Upscaling the 512×512 canonical anchor at 4X consumes 2 credits (1 generation = 2 credits) and exports a 2048×2048 watermark-free JPEG after clicking Apply (02_result.png, 03_download.png). |
| 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. | 23 / 30 The workspace provides 2X/4X scale toggles and a Before/After comparison slider (02_result.png). Although a "Your Cloud storage is full" upgrade modal may appear when entering the editor, dismissing it and clicking Apply -> Download exports the native 2048×2048 watermark-free JPEG without payment gating (03_download.png). |
| 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 Operated by AndOr Communications Pvt. Ltd. (New Delhi, India), creator of the LightX mobile and web visual AI suite with tens of millions of users. |
| Engineering & privacy | 13 / 15 Supports offline queue recovery and one-click "Delete" to immediately purge uploaded/upscaled files from cloud storage. | 12 / 15 Uses AWS S3 presigned uploads paired with POST https://www.instagraphe.mobi/andor-media-1.0/aiartweb/generateImage async inference and CDN delivery; after vendor S3 credential recovery on 2026-10-23, single-sample server wait measured 6.42s (6.84s end-to-end). |
| 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). | 60 / 65 Pixel fidelity (24.5/25: 512×512 anchor upscaled 4X to 2048×2048 with PSNR = 28.05 dB and SSIM = 0.8979) · Edge & high-frequency recovery (22.5/25: edge_corr = 0.7118, hf_ratio = 0.5313, rich 4X full-resolution detail) · Calibration plate & micro-text (13.0/15: plate_psnr_db = 16.85 dB, clean wooden sign lettering and calibration lines) (60.0/65) |
| Deliverable specifications | 20 / 20 Free guest tier directly exports full 4x (2048×2048) unwatermarked PNG (20.0/20). | 18 / 20 Daily free credits (2 credits used) directly export a native 4X 2048×2048 watermark-free JPEG (2,782,593 bytes); full 4X resolution achieved, with 2 points deducted for lossy JPEG format (18.0/20) |
| Processing speed | 10.5 / 15 Free cloud GPU 4x Photo super-resolution completed in ~18.5s (10.5/15). | 12 / 15 2026-10-23 same-run single-sample network timing: 6.42s server wait (6.84s end-to-end) from POST https://www.instagraphe.mobi/andor-media-1.0/aiartweb/generateImage (r8) to result image GET completion (r19) (12.0/15) |
