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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 | birme.net | Depositphotos | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 69/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 83/100 512 × 512 · PNG | Not tested in topic | Compare in task topic → |
| Image upscaling | 94/100 2048 × 2048 · PNG | 81/100 1024×1024 (JPG · 2.0x Unwatermarked) · Historical description; output not attached | Active task |
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Browse this task →| Criterion | BIRME Image upscaling 94/100 Seven-aspect task score BIRME is one of the rare free tools that runs AI super-resolution entirely client-side via in-browser WebGPU/WASM without requiring an account. In our live test, it upscaled a 1024px input to a full 2048x2048 watermark-free native PNG in 60.3s, achieving an edge correlation of 0.6668 that significantly outperforms traditional bicubic interpolation while providing uncompromising zero-upload privacy. Tested export 2048 × 2048 · PNG Historical test · 2026-11-01 | Depositphotos (Free Image Upscaler) Image upscaling 81/100 Seven-aspect task score Free login-free downloads are fast, but input is JPG-only and a notification prompt appears; fine-edge improvement at 2× was limited in this run. Tested export 1024×1024 (JPG · 2.0x Unwatermarked) · Historical description; output not attached Historical test · 2026-10-16 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | BIRME 100% free client-side batch image processing and compression · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free Completely free without login; unlimited batch image processing constrained only by client memory Smart crop, format conversion (JPG/PNG/WebP/AVIF), quality compression, watermark, AI background removal and upscaling；Pure client-side execution; very large batches may consume significant browser memory；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. All batch resizing, compression, AI background removal, and upscaling are 100% free with voluntary donation support and zero paid plans. Cancellation, sources & verification recordCancellation and refund terms unverified BIRME Official Studio ↗ · 2026-11-01 Capture 1 ↗ | This web background remover; excludes desktop software and stock subscriptions · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free web tool2026-10-20 ↗ Free Free Free Officially free background removal with transparent PNG output Inputs up to 30MB; free export size and count not specified 1 plan / billing-period records, all listed; — means that period is not recorded. Inputs up to 30MB; free export size and count not specified Cancellation, sources & verification recordCredit packs remain valid for 1 year; subscriptions can be cancelled anytime in account settings Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ |
| Free & trial allowance on the test date | Completely free, no quota limits, pure client-side WebGPU processing | Completely free with no login (fixed 2x scale, 15MB max file size, JPEG/JPG input only) |
| Cancellation & refunds | Not verified | Credit packs remain valid for 1 year; subscriptions can be cancelled anytime in account settings |
| Disclosure of costs & limits | Page transparently outlines all resizing and AI enhancement parameters | Upload box clearly states 'JPEG or JPG • 15MB max', though visiting the page immediately triggers a browser notification permission prompt |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 2× |
| Fixture findings | Under the 2048px standard anchor, BIRME's local WebGPU super-resolution outputs a 2048x2048 native PNG with 26.97 dB PSNR, 0.8897 SSIM, 0.6668 edge correlation (+17.9% over bicubic baseline), and 16.08 dB plate PSNR, completing in 60.3s purely offline on the client. | No obvious artifacts appeared in this 2× test; recovery of fine blurred edges remained limited. |
| Original historical observation | BIRME AI Enhance runs purely offline via browser WebGPU/WASM, upscaling 1024x1024 to 2048x2048 with an edge correlation of 0.6668, delivering significantly better detail than bicubic interpolation. | PSNR=27.34dB · SSIM=0.8924 (2x 1024×1024 JPG); Mode A GT exposes the underlying algorithm: edge_corr=0.5740 and hf_ratio=0.4018 sit barely above standard non-AI Bicubic interpolation (0.5656 / 0.3651), proving its 0.60s speed comes from a lightweight CNN/unsharp filter rather than deep super-resolution; Calibration plate PSNR=15.60dB: artifact-free, but recovers significantly less high-frequency edge detail than iLoveIMG or Upscale.media. |
| Suitable uses · historical assessment | Users needing no-login, 100% private, client-side AI image super-resolution without uploading files to external servers | Users needing instant (0.6s), completely free no-login 2x JPG enlargement without deep high-frequency texture reconstruction |
| 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 (JPG · 2.0x Unwatermarked) · 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 (PNG · 4.0x full-resolution direct export) | 1024×1024 (JPG · 2.0x Unwatermarked) |
| Watermark observation | No watermark | No watermark |
| Batch & API | Supports arbitrary batch processing limited only by local device memory and GPU VRAM | Single JPEG upload only; no batch or 4x options |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 60.34s · End-to-end reference: 60.34s | Network-observed server wait: 0.6s · End-to-end reference: 3.32s |
| Date & fixture | 2026-11-01 · 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 | All features available directly without registration or login | 100% free no-login 2x (1024×1024) JPG export, but strictly accepts JPEG/JPG uploads only (rejects PNG) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Triggers a browser notification permission prompt on page load and restricts uploads strictly to JPEG/JPG files (no PNG support). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | BIRME Project | Depositphotos Inc. (Vista / Cimpress Group) |
| Recorded origin | United Kingdom | New York, NY, USA |
| Domain history record | Founded in 2013 | 2009–Present |
| Background & reputation assessment | Not verified | Operated by New York stock photography giant Depositphotos Inc. (part of Vista / Cimpress). |
| External reputation record | Continuously operating for 13 years since 2013, renowned for pure client-side privacy. | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Google Analytics | Not verified |
| Engineering & privacy assessment | Not verified | Fastest Network-observed server wait at 0.60s, backed by an explicit 24-hour automatic file deletion policy. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 24 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 31 / 35 Zero paywalls or credit traps: unlike its paywalled Text-to-Image tool, Depositphotos' Upscaler is a 100% free utility exporting unwatermarked 1024×1024 JPGs with no login. | |
| Interaction restraint | 23 / 30 Triggers a browser notification permission prompt on page load and restricts uploads strictly to JPEG/JPG files (no PNG support). | |
| Background & reputation | 19 / 20 Operated by New York stock photography giant Depositphotos Inc. (part of Vista / Cimpress). | |
| Engineering & privacy | 14 / 15 Fastest Network-observed server wait at 0.60s, backed by an explicit 24-hour automatic file deletion policy. | |
| Task quality | 60.5 / 65 PSNR vs 2048px GT: 26.97 dB · SSIM: 0.8897 · Edge Gradient Correlation: 0.6668 · High-Freq Sharpness Ratio: 0.5048 · Calibration Plate PSNR: 16.08 dB | 48 / 65 PSNR vs 2048px GT: 27.34 dB · SSIM: 0.8924 · Edge Gradient Correlation: 0.574 · High-Freq Sharpness Ratio: 0.4018 · Calibration Plate PSNR: 15.6 dB |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Free scale factor: 4x (2048 × 2048 (PNG · 4.0x full-resolution direct export)) | 16 / 20 Clean unwatermarked export (8/8); Free scale factor: 2x (1024×1024 (JPG · 2.0x Unwatermarked)) |
| Processing speed | 12 / 15 Network-observed server wait: 60.34s (API mode: client_side; end-to-end 60.34s shown for reference only, never penalized) | 15 / 15 Network-observed server wait: 0.6s (API mode: sync_post; end-to-end 3.32s shown for reference only, never penalized) |
