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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 | DeWatermark | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 76/100 1280 × 1280 · 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 · PNG | Active task |
| Object removal | Not tested in topic | 74/100 1280 × 1280 · PNG | Compare in task topic → |
| Watermark removal | Not tested in topic | 62/100 1024 × 1024 · PNG | Compare in task topic → |
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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 | DeWatermark Image Enhancer (AI Upscaler) Image upscaling 81/100 Seven-aspect task score Login-free 2× output is clean and watermark-free with clear tiers and credit costs; 4× needs Pro rather than free access. Tested export 1024 × 1024 · PNG Historical test · 2026-10-17 |
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| 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 ↗ | Basic web removal and related Pro/credit offers · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Basic background removal2026-10-20 ↗ Free Free Free Feature page describes free basic removal without watermarks; input up to 5MB Pricing card says 3 daily credits, FAQ says 2; these describe watermark-service credits Pro Pack 12K2026-10-20 ↗ — USD 120/year Annual Selected tier: 12,000 credits; credit table concerns watermark processing Removal feature page lists HD and batch under Pro; input up to 10MB；Unused credits expire at membership end; no automatic renewal 100 credits2026-10-20 ↗ USD 7 · one-time payment Usage / one-time Usage / one-time 100 cross-tool credits; removal cost unspecified Rules [1] 500 credits2026-10-20 ↗ USD 18 · one-time payment Usage / one-time Usage / one-time 500 cross-tool credits; removal cost unspecified Rules [1] 1,000 credits2026-10-20 ↗ USD 25 · one-time payment Usage / one-time Usage / one-time 1,000 cross-tool credits; removal cost unspecified Rules [1] 5,000 credits2026-10-20 ↗ USD 80 · one-time payment Usage / one-time Usage / one-time 5,000 cross-tool credits; removal cost unspecified Rules [1] 10,000 credits2026-10-20 ↗ USD 120 · one-time payment Usage / one-time Usage / one-time 10,000 cross-tool credits; removal cost unspecified Rules [1] 25,000 credits2026-10-20 ↗ USD 250 · one-time payment Usage / one-time Usage / one-time 25,000 cross-tool credits; removal cost unspecified Rules [1] 50,000 credits2026-10-20 ↗ USD 450 · one-time payment Usage / one-time Usage / one-time 50,000 cross-tool credits; removal cost unspecified Rules [1] 100,000 credits2026-10-20 ↗ USD 800 · one-time payment Usage / one-time Usage / one-time 100,000 cross-tool credits; removal cost unspecified Rules [1] 18 plan / billing-period records, all listed; — means that period is not recorded. All four monthly/annual volumes are verified using purchase-button totals (6,000 annual credits cost $90, despite a rounded $8 monthly label). The free card states 3 daily credits but other free statements conflict, so a single free allowance is unconfirmed. The 1/3-credit rules concern watermark removal, not a separately stated background-removal rate. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordNo automatic renewal; the FAQ states no refund policy, with support available for payment issues. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ All Pro volumes and billing periods ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ · Capture 5 ↗ · Capture 6 ↗ · Capture 7 ↗ · Capture 8 ↗ |
| Free & trial allowance on the test date | Completely free, no quota limits, pure client-side WebGPU processing | Free anonymous 2X upscaling (up to 2800px) and unwatermarked 1024×1024 export; 4X upscaling requires Pro |
| Cancellation & refunds | Not verified | No automatic renewal; the FAQ states no refund policy, with support available for payment issues. |
| Disclosure of costs & limits | Page transparently outlines all resizing and AI enhancement parameters | Scale selector explicitly displays '2X | Max 2800px' and '4X PRO' |
| 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. | Denoising and text edges were retained; the tested free tier was limited to 2× at 1024px. |
| 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. | DeWatermark Image Enhancer's 2X model prioritizes faithful denoising and edge sharpening, scoring PSNR = 27.12 dB overall and 30.46 dB on the engraved wooden sign without hallucinated textures, though 4X (2048×2048) is locked behind Pro. |
| Suitable uses · historical assessment | Users needing no-login, 100% private, client-side AI image super-resolution without uploading files to external servers | Users seeking high-PSNR, artifact-free 2x image enhancement without login or watermarks |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 1024 × 1024 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048 × 2048 (PNG · 4.0x full-resolution direct export) | 1024 × 1024 (2X Unwatermarked) |
| Watermark observation | No watermark | Watermark-free |
| Batch & API | Supports arbitrary batch processing limited only by local device memory and GPU VRAM | Supports Batch Enhance Photo and REST API |
| Recorded free-tier dimensions | 2048 × 2048 | 1024 × 1024 |
| Attached file dimensions | 2048 × 2048 · PNG | 1024 × 1024 · PNG |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 60.34s · End-to-end reference: 60.34s | Network-observed server wait: 8.1s · End-to-end reference: 9.5s |
| Date & fixture | 2026-11-01 · 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 | All features available directly without registration or login | No login required; optional email/Google login |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | No signup or watermark on the 2X (1024×1024) export; only selecting 4X triggers the Pro upgrade modal. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | BIRME Project | XTeam (DeWatermark.ai) |
| Recorded origin | United Kingdom | Global AI Vision Team (XTeam) |
| Domain history record | Founded in 2013 | 2023–present |
| Background & reputation assessment | Not verified | Operated by XTeam (DeWatermark.ai) with both single-image and Batch Enhance Photo modes. |
| 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 | Lossless 512×512 upload with 60-minute automatic cloud cleanup. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 60 minutes; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 28 / 35 Uploads the 512×512 anchor and automatically completes 2X upscaling (1024×1024) without login; clearly labels '2X (2 credits)' vs '4X PRO (4 credits)' and allows free unwatermarked 1024×1024 download (02_workspace.png, 03_download.png). | |
| Interaction restraint | 25 / 30 No signup or watermark on the 2X (1024×1024) export; only selecting 4X triggers the Pro upgrade modal. | |
| Background & reputation | 17.5 / 20 Operated by XTeam (DeWatermark.ai) with both single-image and Batch Enhance Photo modes. | |
| Engineering & privacy | ||
| 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 | 53.5 / 65 2X super-resolution (512→1024) achieved full-frame PSNR = 27.12 dB, wooden sign ROI plate_psnr_db = 30.46 dB, SSIM = 0.9711, and edge_corr = 0.6117 with zero ringing artifacts (53.5/65). |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Free scale factor: 4x (2048 × 2048 (PNG · 4.0x full-resolution direct export)) | 15.5 / 20 Free tier exports 2X (1024×1024, max 2800px) without watermark; 4X requires Pro (15.5/20). |
| 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) | |
